openldap-bugs November 2017

openldap-bugs@openldap.org

15 participants
32 discussions

(ITS#8777) [LMDB] Closing read cursor uses already freed transaction (MDB_VL32)
by markus＠greenrobot.de 26 Nov '17

26 Nov '17

Full_Name: Markus Junginger Version: mdb.master OS: Ubuntu URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (77.190.230.93) Read cursors may outlive a transaction to be renewed with another. Thus, cursors should be correctly closed even after their last transaction was aborted. But they access the (already freed) transaction during closing when MDB_VL32 is used (mdb.master branch). ASan captures this like this: ==19722==ERROR: AddressSanitizer: heap-use-after-free on address 0x61100001b140 at pc 0x000000ea2387 bp 0x7ffd36e3cd20 sp 0x7ffd36e3cd18 READ of size 8 at 0x61100001b140 thread T0 #0 0xea2386 in mdb_cursor_unref mdb.c:2082:18 #1 0xec577b in mdb_cursor_close mdb.c:8538:3 0x61100001b140 is located 128 bytes inside of 250-byte region [0x61100001b0c0,0x61100001b1ba) freed by thread T0 here: #0 0x74f840 in __interceptor_cfree.localalias.0 (...) #1 0xe8ea98 in mdb_txn_end mdb.c:3380:3 #2 0xe8ecc5 in mdb_txn_abort mdb.c:3405:2 Possible fix for line mdb.c:2082 (applying what I found in mdb_cursor_close): - if (mc->mc_txn->mt_rpages[0].mid) { + if ((mc->mc_flags & C_UNTRACK) && mc->mc_txn->mt_rpages[0].mid) { Code to reproduce using MDB_VL32: err = mdb_txn_begin(env, nullptr, MDB_RDONLY, &tx); err = mdb_cursor_open(tx, dbi, &cursor); // We must have data so get will set C_INITIALIZED err = mdb_cursor_get(cursor, &key, &value, MDB_SET_KEY); mdb_txn_abort(tx); mdb_cursor_close(cursor); // <- still uses tx

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Re: (ITS#8776) lessOrEqual does not work as expected
by kristianmccolm＠hotmail.com 23 Nov '17

23 Nov '17

--_000_BN6PR04MB08825B65B73F5FF9B6674966DD210BN6PR04MB0882namp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Michael, The lessOrEqual does work as expected now after shutting down the directory= and running slapindex. Thanks Kristian ________________________________ From: Michael Str=F6der <michael(a)stroeder.com> Sent: November 23, 2017 15:19 To: kristianmccolm(a)hotmail.com; openldap-its(a)OpenLDAP.org Subject: Re: (ITS#8776) lessOrEqual does not work as expected kristianmccolm(a)hotmail.com wrote: > Full_Name: Kristian McColm > Version: slapd 2.4.40 Did you also test with a newer release? > With an attribute type defined in the schema and index as per the below, = and the > value of the attribute set to 0, the lessOrEqual filter does not work as > expected. It works for me. Example filter (aeStatus<=3D1) also finds entries with (aeStatus=3D0): https://demo.ae-dir.com/web2ldap?ldapi://%2Fopt%2Fae-dir%2Frun%2Fslapd%2Fld= api/cn=3Dtest,ou=3Dae-dir??sub?(aeStatus<=3D1)?bindname=3Duid%3Dzots%2Ccn%3= Dtest%2Cou%3Dae-dir,X-BINDPW=3DCorrectHorseBatteryStaple (This is an OpenLDAP 2.4.45 server but this worked for me with older releases too.) > Schema attribute: > olcAttributeTypes: {1} ( <oid> NAME 'num' DESC 'Numeric Attribute' SYNTAX > 1.3.6.1.4.1.1466.115.121.1.27 X-ORIGIN 'user defined' EQUALITY integerMat= ch > ORDERING integerOrderingMatch ) Did you use <oid> as a placeholder or is that value really literally in your schema? If you used it as a placeholder herein which OID did you really use? Did you eventually changed index-related schema config without re-indexing? Ciao, Michael. --_000_BN6PR04MB08825B65B73F5FF9B6674966DD210BN6PR04MB0882namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style type=3D"text/css" style=3D"display:none;"></style> </head> <body dir=3D"ltr"> <div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Helvetica,sans-serif;" dir=3D"ltr"> <p style=3D"margin-top:0;margin-bottom:0">Hello Michael,</p> <p style=3D"margin-top:0;margin-bottom:0"><br> </p> <p style=3D"margin-top:0;margin-bottom:0">The lessOrEqual does work as expe= cted now after shutting down the directory and running slapindex. <br> </p> <p style=3D"margin-top:0;margin-bottom:0"><br> </p> <p style=3D"margin-top:0;margin-bottom:0">Thanks <br> </p> <p style=3D"margin-top:0;margin-bottom:0">Kristian</p> <br> <br> <div style=3D"color: rgb(0, 0, 0);"> <hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"> <div id=3D"divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" face= =3D"Calibri, sans-serif" color=3D"#000000"><b>From:</b> Michael Str=F6der &= lt;michael(a)stroeder.com><br> <b>Sent:</b> November 23, 2017 15:19<br> <b>To:</b> kristianmccolm(a)hotmail.com; openldap-its(a)OpenLDAP.org<br> <b>Subject:</b> Re: (ITS#8776) lessOrEqual does not work as expected</font> <div> </div> </div> <div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:10pt;= "> <div class=3D"PlainText">kristianmccolm(a)hotmail.com wrote:<br> > Full_Name: Kristian McColm<br> > Version: slapd 2.4.40<br> <br> Did you also test with a newer release?<br> <br> > With an attribute type defined in the schema and index as per the belo= w, and the<br> > value of the attribute set to 0, the lessOrEqual filter does not work = as<br> > expected.<br> <br> It works for me.<br> <br> Example filter (aeStatus<=3D1) also finds entries with (aeStatus=3D0):<b= r> <br> <a href=3D"https://demo.ae-dir.com/web2ldap?ldapi://%2Fopt%2Fae-dir%2Frun%2= Fslapd%2Fldapi/cn=3Dtest,ou=3Dae-dir??sub?(aeStatus<=3D1)?bindname=3Duid= %3Dzots%2Ccn%3Dtest%2Cou%3Dae-dir,X-BINDPW=3DCorrectHorseBatteryStaple">htt= ps://demo.ae-dir.com/web2ldap?ldapi://%2Fopt%2Fae-dir%2Frun%2Fslapd%2Fldapi= /cn=3Dtest,ou=3Dae-dir??sub?(aeStatus<=3D1)?bindname=3Duid%3Dzots%2Ccn%3= Dtest%2Cou%3Dae-dir,X-BINDPW=3DCorrectHorseBatteryStaple</a><br> <br> (This is an OpenLDAP 2.4.45 server but this worked for me with older<br> releases too.)<br> <br> > Schema attribute:<br> > olcAttributeTypes: {1} ( <oid> NAME 'num' DESC 'Numeric Attribut= e' SYNTAX<br> > 1.3.6.1.4.1.1466.115.121.1.27 X-ORIGIN 'user defined' EQUALITY integer= Match<br> > ORDERING integerOrderingMatch )<br> <br> Did you use <oid> as a placeholder or is that value really literally = in<br> your schema? If you used it as a placeholder herein which OID did you<br> really use?<br> <br> Did you eventually changed index-related schema config without re-indexing?= <br> <br> Ciao, Michael.<br> <br> </div> </span></font></div> </div> </div> </body> </html> --_000_BN6PR04MB08825B65B73F5FF9B6674966DD210BN6PR04MB0882namp_--

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Re: (ITS#8776) lessOrEqual does not work as expected
by michael＠stroeder.com 23 Nov '17

23 Nov '17

This is a cryptographically signed message in MIME format. --------------ms080105080402020204000104 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable kristianmccolm(a)hotmail.com wrote: > Full_Name: Kristian McColm > Version: slapd 2.4.40 Did you also test with a newer release? > With an attribute type defined in the schema and index as per the below= , and the > value of the attribute set to 0, the lessOrEqual filter does not work a= s > expected. It works for me. Example filter (aeStatus<=3D1) also finds entries with (aeStatus=3D0): https://demo.ae-dir.com/web2ldap?ldapi://%2Fopt%2Fae-dir%2Frun%2Fslapd%2F= ldapi/cn=3Dtest,ou=3Dae-dir??sub?(aeStatus<=3D1)?bindname=3Duid%3Dzots%2C= cn%3Dtest%2Cou%3Dae-dir,X-BINDPW=3DCorrectHorseBatteryStaple (This is an OpenLDAP 2.4.45 server but this worked for me with older releases too.) > Schema attribute: > olcAttributeTypes: {1} ( <oid> NAME 'num' DESC 'Numeric Attribute' SYNT= AX > 1.3.6.1.4.1.1466.115.121.1.27 X-ORIGIN 'user defined' EQUALITY integerM= atch > ORDERING integerOrderingMatch ) Did you use <oid> as a placeholder or is that value really literally in your schema? If you used it as a placeholder herein which OID did you really use? Did you eventually changed index-related schema config without re-indexin= g? 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(ITS#8776) lessOrEqual does not work as expected
by kristianmccolm＠hotmail.com 23 Nov '17

23 Nov '17

Full_Name: Kristian McColm Version: slapd 2.4.40 OS: RHEL 6.8 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (162.208.80.0) With an attribute type defined in the schema and index as per the below, and the value of the attribute set to 0, the lessOrEqual filter does not work as expected. Schema attribute: olcAttributeTypes: {1} ( <oid> NAME 'num' DESC 'Numeric Attribute' SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 X-ORIGIN 'user defined' EQUALITY integerMatch ORDERING integerOrderingMatch ) Index attribute: olcDbIndex: num eq,pres Less or Equal does not work: $ ldapsearch -x -h localhost -p 389 -b "uid=bob,dc=test,dc=com" '(num<=1)' # extended LDIF # # LDAPv3 # base <uid=bob,dc=test,dc=com> with scope subtree # filter: (num<=1) # requesting: ALL # # search result search: 2 result: 0 Success # numResponses: 1 Equality match works however: $ ldapsearch -x -h localhost -p 389 -b "uid=bob,dc=test,dc=com" '(num=0)' # extended LDIF # # LDAPv3 # base <uid=bob,dc=test,dc=com> with scope subtree # filter: (num=0) # requesting: ALL # dn: uid=bob,dc=test,dc=com objectClass: top objectClass: testObjectClass uid: bob num: 0 # numResponses: 2 # numEntries: 1 And with a non-zero value for 'num' lessOrEqual works as expected: $ ldapsearch -x -h localhost -p 389 -b "uid=bob,dc=test,dc=com" '(num<=10)' # extended LDIF # # LDAPv3 # base <uid=bob,dc=test,dc=com> with scope subtree # filter: (num<=10) # requesting: ALL # dn: uid=bob,dc=test,dc=com objectClass: top objectClass: testObjectClass uid: bob num: 1 # numResponses: 2 # numEntries: 1

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(ITS#8775) PASSMOD exop fails with RWM and tight ACLs
by quinot＠adacore.com 22 Nov '17

22 Nov '17

Full_Name: Thomas Quinot Version: slapd 2.X (Nov 22 2017 11:39:03) OS: Linux URL: ftp://ftp.openldap.org/incoming/quinot-171122.diff Submission from: (NULL) (2a02:2ab8:224:1:36e6:d7ff:fe09:66dd) If a tight ACL is globally defined for userPassword: access to attrs=userPassword by dn="cn=Manager,o=Local" write by self write by anonymous auth and there is a virtual naming context implemented using a relay backend with rwm overlay: database @BACKEND@ suffix "dc=example,dc=com" [...] database relay suffix o=OtherExample,c=US relay dc=example,dc=com overlay rwm rwm-suffixmassage "dc=example,dc=com" then an end-user's attempt to update her own password will fail with: err=53 text=unwilling to verify old password because at some point we attempt to apply the above ACL to the original (virtual) DN, but considering the resolved (real) DN for the user: 5a1553ea => acl_mask: access to entry "cn=Ursula Hampster,ou=Alumni Association,ou=People,o=OtherExample,c=US", attr "userPassword" requested 5a1553ea => acl_mask: to value by "cn=ursula hampster,ou=alumni association,ou=people,dc=example,dc=com", (=0)

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Re: (ITS#8767) Binddn issue with a comma in the DN
by michael＠stroeder.com 21 Nov '17

21 Nov '17

clement.oudot(a)savoirfairelinux.com wrote: > I confirm there is no bug, but the escaping is a little weird, as we need two \\ to escape the , character. IMHO it's not weird because for escaping the comma in DN string representation you need the first back-slash which you have to escape once more for config syntax. Ciao, Michael.

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Re: (ITS#8767) Binddn issue with a comma in the DN
by clement.oudot＠savoirfairelinux.com 21 Nov '17

21 Nov '17

Hello, I confirm there is no bug, but the escaping is a little weird, as we need two \\ to escape the , character. Config sample: uri ldap://127.0.0.1/dc=test,dc=example,dc=com idassert-bind bindmethod="simple" binddn="cn=OUDOT\\, Clement,ou=users,dc=example,dc=com" credentials="secret" mode="legacy" flags="non-prescriptive" Thanks a lot to Michael Stroeder for his help. Clement.

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Re: (ITS#8774) [PATCH] EVP_MD_CTX_create and EVP_MD_CTX_destroy have been replaced by EVP_MD_CTX_new and EVP_MD_CTX_free in openssl v1.1 and above.
by quanah＠symas.com 17 Nov '17

17 Nov '17

--On Thursday, November 16, 2017 4:47 PM +0000 minfrin(a)sharp.fm wrote: > Full_Name: Graham Leggett > Version: git master > OS: CentOS7 > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (2001:470:18b1:1:c920:9f6:b546:7826) > > > The addition of 8e34ed8c on the 7th of November broke the build for > openssl < 1.1, as the patch used the newer versions of these functions. Thanks for the report! This issue has now been fixed in openldap head without the necessity of a configure check. Regards, Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>

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(ITS#8774) [PATCH] EVP_MD_CTX_create and EVP_MD_CTX_destroy have been replaced by EVP_MD_CTX_new and EVP_MD_CTX_free in openssl v1.1 and above.
by minfrin＠sharp.fm 16 Nov '17

16 Nov '17

Full_Name: Graham Leggett Version: git master OS: CentOS7 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (2001:470:18b1:1:c920:9f6:b546:7826) The addition of 8e34ed8c on the 7th of November broke the build for openssl < 1.1, as the patch used the newer versions of these functions. The following patch adds the associated autoconf stuff to fix this: >From e111db878300d60acdc295eec08e008a831f9895 Mon Sep 17 00:00:00 2001 From: Graham Leggett <minfrin(a)sharp.fm> Date: Sat, 23 Sep 2017 02:10:36 +0000 Subject: [PATCH] EVP_MD_CTX_create and EVP_MD_CTX_destroy have been replaced by EVP_MD_CTX_new and EVP_MD_CTX_free in openssl v1.1 and above. --- configure.in | 5 +++++ libraries/libldap/tls_o.c | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/configure.in b/configure.in index 46e5e8c..b3da5f1 100644 --- a/configure.in +++ b/configure.in @@ -1223,6 +1223,11 @@ if test $ol_with_tls = openssl || test $ol_with_tls = auto ; then TLS_LIBS="-lssl -lcrypto" fi + save_LIBS="$LIBS" + LIBS="$LIBS $TLS_LIBS" + AC_CHECK_FUNCS(EVP_MD_CTX_create EVP_MD_CTX_destroy) + LIBS="$save_LIBS" + OL_SSL_COMPAT if test $ol_cv_ssl_crl_compat = yes ; then AC_DEFINE(HAVE_OPENSSL_CRL, 1, diff --git a/libraries/libldap/tls_o.c b/libraries/libldap/tls_o.c index d3b6ceb..14dffbd 100644 --- a/libraries/libldap/tls_o.c +++ b/libraries/libldap/tls_o.c @@ -867,7 +867,11 @@ tlso_session_pinning( LDAP *ld, tls_session *sess, char *hashalg, struct berval goto done; } +#ifdef HAVE_EVP_MD_CTX_CREATE + mdctx = EVP_MD_CTX_create(); +#else mdctx = EVP_MD_CTX_new(); +#endif if ( !mdctx ) { rc = -1; goto done; @@ -877,7 +881,11 @@ tlso_session_pinning( LDAP *ld, tls_session *sess, char *hashalg, struct berval EVP_DigestUpdate( mdctx, key.bv_val, key.bv_len ); EVP_DigestFinal_ex( mdctx, (unsigned char *)keyhash.bv_val, &len ); keyhash.bv_len = len; +#ifdef HAVE_EVP_MD_CTX_DESTROY + EVP_MD_CTX_destroy( mdctx ); +#else EVP_MD_CTX_free( mdctx ); +#endif } else { keyhash = key; } -- 1.8.3.1

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(ITS#8773) slapo-deref: man page and test suite needed
by quanah＠openldap.org 16 Nov '17

16 Nov '17

Full_Name: Quanah Gibson-Mount Version: 2.4.45 OS: N/A URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (47.208.148.239) The slapo-deref overlay is missing a man page and a corresponding test in the test suite. These should be added to the project.

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openldap-bugs November 2017