- openldap-bugs - openldap.org

[Issue 10397] New: Presence of "auditContext" in root database entry can break replication
by openldap-its＠openldap.org 07 Oct '25

07 Oct '25

https://bugs.openldap.org/show_bug.cgi?id=10397 Issue ID: 10397 Summary: Presence of "auditContext" in root database entry can break replication Product: OpenLDAP Version: 2.6.10 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- When bootstrapping a new environment, I found that the: "auditContext: cn=accesslog" attribute that is added on a provider breaks replication when attempting to replicate to a consumer that has no database present and lacks the accesslog overlay, since that is what defines the attribute in question. Instead we get a corrupted entry with an inability to write to the local database. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10389] New: mdb_opinfo_get: Assertion `!rc' failed. And data got lost.
by openldap-its＠openldap.org 29 Sep '25

29 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10389 Issue ID: 10389 Summary: mdb_opinfo_get: Assertion `!rc' failed. And data got lost. Product: OpenLDAP Version: 2.6.9 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: 3049720393(a)qq.com Target Milestone: --- Hi All, Don't know whether this problem is related to this bug or not, but want to share it here as we still do not know the reason ;) We're using version 2.6.9 now and started up by docker container. It works very well when installing and starting it on a server instance. But recently, we try to create it on Azure Container Apps service (which is a service supporting to start docker containers), but found out that when two openldap containers(openldap processes) run at the same time with same data volume mounted, well, one is normally started, and another one is looping to try to start but always failed. The failed one shows errors: ``` mdb_db_open: database "dc=xxx,dc=exmple,dc=com" cannot be opened: Resource temporarily unavailable (11). Restore from backup! backend_startup_one (type=mdb, suffix="dc=xxx,dc=exmple,dc=com"): bi_db_open failed! (11) ``` I think this is OK, because the started one is occupying the resources. And the started up one is working well for some time, BUT suddenly at some point, it went down to exit with the following error messages: ``` slapd: id2entry.c:828: mdb_opinfo_get: Assertion `!rc' failed. /usr/local/bin/entrypoint.sh: line 160: 50 Aborted (core dumped) slapd -d 32768 -u openldap -g openldap -F /etc/ldap/slapd.d ``` And as the previous normal one is exit, the other one can start up normally. So we bash into it and ran `ldapsearch` command and found out that some of the people entries were gone!!! But until now we still do not know the reason... try to get some help here ;) thanks. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10373] New: pcache SEGV with pcacheTemplate ttr
by openldap-its＠openldap.org 23 Sep '25

23 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10373 Issue ID: 10373 Summary: pcache SEGV with pcacheTemplate ttr Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: bertrand(a)jacquin.bzh Target Milestone: --- Hi, I am currently setting up OpenLDAP with pcache to circumvent aggressive LDAP queries from an application and thus reduce load to the SQL database used in the backend through back-sql.so. The setup is incomplete and likely not currently implemented properly, please don't pay too much attention in configuration details from below, however I'm noticing SEGV when pcacheTemplate are configured with ttr: refresh_purge() attempts to dereference NULL pointer *a, leading to the SEGV: ``` $ gdb --args /usr/lib64/openldap/slapd -u ldap -h "ldapi:/// ldap:/// ldaps:///" -f /etc/openldap/slapd.conf -d stats -d pcache 688224ea.1e5f48d7 0x7fffedffb6c0 conn=1020 op=2 SEARCH RESULT tag=101 err=0 qtime=0.000166 etime=0.012879 nentries=0 text= 688224ea.1e633093 0x7fffedffb6c0 conn=1020 op=3 SRCH base="ou=<redacted>,dc=<redacted>,dc=<redacted>" scope=2 deref=0 filter="(&(objectClass=inetOrgPerson)(&(jpegPhoto=*)(|(mail=<redacted>))))" 688224ea.1e64fd20 0x7fffedffb6c0 conn=1020 op=3 SRCH attr=dn 688224ea.1e65fb45 0x7fffedffb6c0 query template of incoming query = (&(objectClass=)(&(jpegPhoto=*)(|(mail=)))) 688224ea.1e660563 0x7fffedffb6c0 Entering QC, querystr = (&(objectClass=inetOrgPerson)(&(jpegPhoto=*)(|(mail=<redacted>)))) 688224ea.1e660de7 0x7fffedffb6c0 Lock QC index = 0x555555828190 688224ea.1e6616cf 0x7fffedffb6c0 Not answerable: Unlock QC index=0x555555828190 688224ea.1e66209d 0x7fffedffb6c0 QUERY NOT ANSWERABLE 688224ea.1e6627c3 0x7fffedffb6c0 QUERY CACHEABLE 688224ea.1ed69d89 0x7fffedffb6c0 conn=1020 op=3 SEARCH RESULT tag=101 err=32 qtime=0.000009 etime=0.007587 nentries=0 text= 688224ea.1ef64669 0x7ffff4dfe6c0 conn=1020 op=4 UNBIND 688224ea.1efab72d 0x7fffedffb6c0 conn=1020 fd=30 closed Thread 7 "slapd" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffee7fc6c0 (LWP 136445)] refresh_purge (op=0x7fffee7fb610, rs=0x7fffee7fb290) at pcache.c:3392 3392 dnl->delete = ( a->a_numvals == 1 ); (gdb) bt #0 refresh_purge (op=0x7fffee7fb610, rs=0x7fffee7fb290) at pcache.c:3392 #1 refresh_purge (op=0x7fffee7fb610, rs=0x7fffee7fb290) at pcache.c:3367 #2 0x00005555555a6098 in slap_response_play (op=op@entry=0x7fffee7fb610, rs=rs@entry=0x7fffee7fb290) at result.c:573 #3 0x00005555555a7ddd in slap_send_search_entry (op=0x7fffee7fb610, rs=0x7fffee7fb290) at result.c:1078 #4 0x000055555562e007 in mdb_search (op=<optimized out>, rs=<optimized out>) at search.c:1110 #5 0x00007ffff73a6509 in refresh_query (op=0x7fffee7fb610, query=0x7fffd8131830, on=0x55555577c350) at pcache.c:3464 #6 consistency_check (ctx=<optimized out>, arg=0x5555559429a0) at pcache.c:3644 #7 0x00007ffff7f9e09d in ldap_int_thread_pool_wrapper (xpool=0x5555557aed80) at tpool.c:1059 #8 0x00007ffff7d3b86b in ?? () from /usr/lib64/libc.so.6 #9 0x00007ffff7dbc858 in ?? () from /usr/lib64/libc.so.6 (gdb) fr 0 #0 refresh_purge (op=0x7fffee7fb610, rs=0x7fffee7fb290) at pcache.c:3392 3392 dnl->delete = ( a->a_numvals == 1 ); (gdb) p *dnl $17 = { next = 0x0, dn = { bv_len = 40, bv_val = 0x7fffe403cb70 "uid=john,ou=<redacted>,dc=<redacted>,dc=<redacted>" }, delete = 80 'P' } (gdb) p a $10 = (Attribute *) 0x0 (gdb) p ad_queryId $14 = (AttributeDescription *) 0x555555819580 (gdb) p *rs $11 = { sr_type = REP_SEARCH, sr_tag = 0, sr_msgid = 0, sr_err = 0, sr_matched = 0x0, sr_text = 0x0, sr_ref = 0x0, sr_ctrls = 0x0, sr_un = { sru_search = { r_entry = 0x7fffe403c5a0, r_attr_flags = 17, r_operational_attrs = 0x0, r_attrs = 0x7fffee7fb320, r_nentries = 0, r_v2ref = 0x0 }, sru_sasl = { r_sasldata = 0x7fffe403c5a0 }, sru_extended = { r_rspoid = 0x7fffe403c5a0 "!", r_rspdata = 0x11 } }, sr_flags = 0 } (gdb) p *rs->sr_entry $12 = { e_id = 33, e_name = { bv_len = 40, bv_val = 0x7fffe403cae0 "uid=john,ou=<redacted>,dc=<redacted>,dc=<redacted>" }, e_nname = { bv_len = 40, bv_val = 0x7fffe403cb18 "uid=john,ou=<redacted>,dc=<redacted>,dc=<redacted>" }, e_attrs = 0x7fffe403c5f0, e_ocflags = 256, e_bv = { bv_len = 0, bv_val = 0x0 }, e_private = 0x7fffe403c5a0 } (gdb) p *rs->sr_entry->e_attrs $13 = { a_desc = 0x555555781be0, a_vals = 0x7fffe403c7f8, a_nvals = 0x7fffe403c7f8, a_numvals = 1, a_flags = 12, a_next = 0x7fffe403c618 } ``` Looking further I can see that attr_find() can return NULL, however NULL are not verified in refresh_purge() after call to attr_find(). Note that I am using 2.6.8 that includes all the changes from ITS#9966 and I can't find any noticeable changes on that area between 2.6.8. and latest 2.6.9. OpenLDAP is built on gentoo with hardened profile: ``` $ /usr/lib64/openldap/slapd -V @(#) $OpenLDAP: slapd 2.6.8 (Jul 23 2025 23:10:57) $ @localhost:/var/tmp/portage/net-nds/openldap-2.6.8-r1/work/openldap-OPENLDAP_REL_ENG_2_6_8-abi_x86_64.amd64/servers/slapd $ /usr/lib64/libc.so.6 -V GNU C Library (Gentoo 2.41-r4 (patchset 6)) stable release version 2.41. Copyright (C) 2025 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiled by GNU CC version 14.3.0. libc ABIs: UNIQUE IFUNC ABSOLUTE Minimum supported kernel: 3.2.0 For bug reporting instructions, please see: <https://bugs.gentoo.org/>. ``` Configuration is as follow: ``` pidfile /run/openldap/slapd.pid argsfile /run/openldap/slapd.args include /etc/openldap/schema/core.schema include /etc/openldap/schema/cosine.schema include /etc/openldap/schema/rfc2307bis.schema include /etc/openldap/schema/inetorgperson.schema include /etc/openldap/schema/rfc8284.schema # From https://raw.githubusercontent.com/jirutka/ssh-ldap-pubkey/refs/heads/master… include /etc/openldap/schema/openssh-lpk.schema #loglevel stats stats2 loglevel stats # Load dynamic modules moduleload argon2.so moduleload pw-pbkdf2.so moduleload pw-sha2.so moduleload back_sql.so moduleload pcache.so # Transport Layer Security TLSCertificateFile /etc/ssl/ldap/openldap.crt TLSCertificateKeyFile /etc/ssl/ldap/openldap.key TLSProtocolMin 3.4 TLSCipherSuite ECDHE+CHACHA20:ECDHE+AESGCM TLSECName X448:P-384:X25519:P-256 # Default search base to use when client submits a non-base search request with an empty base DN defaultsearchbase dc=<redacted>,dc=<redacted> # Hashes to be used in generation of user passwords password-hash {ARGON2ID} # Specify a set of conditions to require require LDAPv3 strong disallow bind_anon # Set of security strength factors to require security ssf=128 localSSF 256 # SASL security properties sasl-secprops noanonymous,noplain # SASL mapping authz-regexp uid=([^@]+)@([^,]+),cn=login,cn=auth uid=$1,ou=$2,dc=<redacted>,dc=<redacted> authz-regexp uid=([^@]+)@([^,]+),cn=plain,cn=auth uid=$1,ou=$2,dc=<redacted>,dc=<redacted> # Allow access to root over SASL access to * by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage by * break # Allow service authentication from UNIX socket only access to dn.subtree="dc=local" attrs=userPassword by sockname="PATH=/var/run/ldapi" auth by anonymous auth by * none # Allow access to top level objects access to dn.base="dc=local" by users read by * break # Allow access to service CN access to dn.subtree="dc=local" by set.exact="this/cn & user/cn" read by * break # Allow user authentication access to dn.subtree="dc=<redacted>,dc=<redacted>" attrs=userPassword by anonymous auth by * none # Allow access to top level objects access to dn.base="dc=<redacted>,dc=<redacted>" by users read by * break # Allow access to users OU access to dn.subtree="dc=<redacted>,dc=<redacted>" by set.exact="this/ou & user/ou" read by * break # Allow services to access directory access to dn.subtree="dc=<redacted>,dc=<redacted>" by dn.exact="cn=<redacted>,dc=local" read by dn.exact="cn=<redacted>,dc=local" read by * break # Deny everything else access to * by * none # The config backend manages all of the configuration information for the slapd(8) daemon. database config # Access control policy access to dn.subtree="cn=config" by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage by * none # Database instance definition database mdb directory /var/lib/openldap-data/dc=local # DN suffix of queries that will be passed to this backend database suffix dc=local # Database instance definition database sql dbname openldap dbuser openldap dbpasswd <redacted> # DN suffix of queries that will be passed to this backend database suffix dc=<redacted>,dc=<redacted> rootdn "uid=root,dc=<redacted>,dc=<redacted>" # Put the database into "read-only" mode readonly yes subtree_cond "ldap_entries.dn LIKE CONCAT('%',?)" children_cond "ldap_entries.dn LIKE CONCAT('%,',?)" dn_match_cond "ldap_entries.dn=?" oc_query "SELECT id,name,keytbl,keycol,create_proc,delete_proc,expect_return FROM ldap_oc_mappings" at_query "SELECT name,sel_expr,from_tbls,join_where,add_proc,delete_proc,param_order,expect_return,sel_expr_u FROM ldap_attr_mappings WHERE oc_map_id=?" id_query "SELECT id,keyval,oc_map_id,dn FROM ldap_entries WHERE dn=?" insentry_stmt "INSERT INTO ldap_entries (dn,oc_map_id,parent,keyval) VALUES (?,?,?,?)" delentry_stmt "DELETE FROM ldap_entries WHERE id=?" renentry_stmt "UPDATE ldap_entries SET dn=?,parent=?,keyval=? WHERE id=?" delobjclasses_stmt "DELETE FROM ldap_entry_objclasses WHERE entry_id=?" # Do not use DN in reverse uppercased form has_ldapinfo_dn_ru no # Caching of LDAP search requests in a local databas overlay pcache pcache mdb 65536 16 1024 60 directory /var/lib/openldap-data/pcache pcacheMaxQueries 1024 # Cache DN pcacheAttrset 0 1.1 pcacheTemplate (objectClass=) 0 3600 60 0 15 pcacheTemplate (objectClass=*) 0 3600 60 0 15 pcacheTemplate (&(objectClass=)(&(jpegPhoto=*)(|(mail=)))) 0 3600 60 0 15 pcacheAttrset 1 jid pcacheTemplate (jid=) 1 3600 60 0 15 pcacheAttrset 2 ou cn givenname sn mail telephonenumber jid description jpegphoto objectClass pcacheTemplate (&(objectClass=)(&(jpegPhoto=*)(|(mail=)))) 2 3600 60 0 15 pcacheTemplate (objectClass=*) 2 3600 60 0 15 pcacheTemplate (objectClass=) 2 3600 60 0 15 pcacheAttrset 3 ou cn givenname sn mail telephonenumber description jpegphoto objectClass pcacheTemplate (&(objectClass=)(&(jpegPhoto=*)(|(mail=)))) 3 3600 60 0 pcacheTemplate (objectClass=*) 3 3600 60 0 pcacheTemplate (objectClass=) 3 3600 60 0 pcacheAttrset 4 mail pcacheTemplate (objectClass=*) 4 3600 60 0 pcacheAttrset 5 * + pcacheTemplate (objectClass=*) 5 3600 60 0 15 pcacheTemplate (mail=) 5 3600 60 0 15 ``` Cheers, Bertrand -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10205] New: SSL handshake blocks forever in async mode if server unaccessible
by openldap-its＠openldap.org 23 Sep '25

23 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10205 Issue ID: 10205 Summary: SSL handshake blocks forever in async mode if server unaccessible Product: OpenLDAP Version: 2.5.17 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: regtube(a)hotmail.com Target Milestone: --- When ldaps:// scheme is used to connect to currently unaccessible server with LDAP_OPT_CONNECT_ASYNC and LDAP_OPT_NETWORK_TIMEOUT options set, it blocks forever on SSL_connect. Here is a trace: ldap_sasl_bind ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP winserv.test.net:636 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 192.168.56.2:636 ldap_pvt_connect: fd: 3 tm: 30 async: -1 ldap_ndelay_on: 3 attempting to connect: connect errno: 115 ldap_int_poll: fd: 3 tm: 0 ldap_err2string [2024-04-25 15:41:27.112] [error] [:1] bind(): Connecting (X) [2024-04-25 15:41:27.112] [error] [:1] err: -18 ldap_sasl_bind ldap_send_initial_request ldap_int_poll: fd: 3 tm: 0 ldap_is_sock_ready: 3 ldap_ndelay_off: 3 TLS trace: SSL_connect:before SSL initialization TLS trace: SSL_connect:SSLv3/TLS write client hello Looks like it happens because non-blocking mode is cleared from the socket (ldap_ndelay_off) after the first poll for write, and non-blocking mode is never restored before attempt to do tls connect, because of the check that assumes that non-blocking mode has already been set for async mode: if ( !async ) { /* if async, this has already been set */ ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_NONBLOCK, (void*)1 ); } while in fact it was cleared. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10386] New: Feature request for Bcrypt Module
by openldap-its＠openldap.org 23 Sep '25

23 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10386 Issue ID: 10386 Summary: Feature request for Bcrypt Module Product: OpenLDAP Version: unspecified Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: contrib Assignee: bugs(a)openldap.org Reporter: young2k15(a)tutanota.com Target Milestone: --- I would like to have a bcrypt module added to the project. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10254] New: Allow upgrading password hash on bind
by openldap-its＠openldap.org 08 Sep '25

08 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10254 Issue ID: 10254 Summary: Allow upgrading password hash on bind Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: me(a)floriswesterman.nl Target Milestone: --- Many OpenLDAP installations are likely to contain relatively old password hashes such as SSHA and CRYPT, as modern alternatives such as Argon are only recent additions. Due to the nature of password hashes, it is of course not possible to "unhash" the old values and rehash them with a more modern algorithm. The presence of these old password hashes poses a liability in case of information leaks or hacks. Currently, the only way to upgrade a password hash is to wait for the user to change their password. This can be sped up by expiring passwords and forcing users to change them. However, this can be slow and frequent password rotation is no longer considered a best practice. It would be a very helpful addition to add support for upgrading a password hash on bind. This is implemented in the 389 directory server: https://www.port389.org/docs/389ds/design/pwupgrade-on-bind.html Essentially, when a user binds, the password is checked like normal. In case of a successful bind, the proposed feature would check the hash algorithm used for the password; and in case it is not equal to the current `olcPasswordHash` value, the user-provided password is rehashed using the new algorithm and stored. This way, the old hashes are phased out more quickly, without being a disturbance to users. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 7981] Feature request: Crypt scheme in pwdPolicy
by openldap-its＠openldap.org 08 Sep '25

08 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=7981 --- Comment #7 from Quanah Gibson-Mount <quanah(a)openldap.org> --- • d0d07810 by Ondřej Kuzník at 2025-06-23T16:47:48+00:00 ITS#7981 Allow setting a default hash per policy -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 7981] Feature request: Crypt scheme in pwdPolicy
by openldap-its＠openldap.org 08 Sep '25

08 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=7981 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |TEST Status|IN_PROGRESS |RESOLVED --- Comment #6 from Quanah Gibson-Mount <quanah(a)openldap.org> --- • dad90d66 by Ondřej Kuzník at 2025-06-23T16:47:48+00:00 ITS#7981 Move default hash selection to slap_passwd_hash_type -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10356] New: Openldap -> Chasing the referral is not proceeding further after 3 referrals
by openldap-its＠openldap.org 26 Aug '25

26 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10356 Issue ID: 10356 Summary: Openldap -> Chasing the referral is not proceeding further after 3 referrals Product: OpenLDAP Version: 2.4.56 Hardware: All OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: hharshitha2797(a)gmail.com Target Milestone: --- Hi Team I have an issue with OpenLDAP 2.4.56. Chasing the referral only yields 3 referrals; the user login does not proceed further to other referrals. This issue is seen in CentOS with OPENSSL 3.0 In OpenLDAP 2.1.22, the same is working; here, OpenSSL is not used. Here OPENSSL 3.0 is not used. We can see around 8 referrals here. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10330] New: TIMEOUT and NETWORK_TIMEOUT not respected when receiving bad data during TLS negotiation
by openldap-its＠openldap.org 26 Aug '25

26 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10330 Issue ID: 10330 Summary: TIMEOUT and NETWORK_TIMEOUT not respected when receiving bad data during TLS negotiation Product: OpenLDAP Version: 2.6.9 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: michael.kourlas(a)solace.com Target Milestone: --- Created attachment 1063 --> https://bugs.openldap.org/attachment.cgi?id=1063&action=edit Test program This seems related to bug 8047. Steps to reproduce: 1. Setup a netcat server on a host: "nc -l -k -p 636". 2. On a different host, attempt to connect to the host running "nc" as if it were an LDAP server via ldaps: "ldapsearch -o NETWORK_TIMEOUT=5 -o TIMEOUT=5 -H ldaps://<ip>:636". 3. During the 5 second timeout period, switch back to the netcat server and transmit a newline by pressing enter. 4. ldapsearch will hang forever until the TCP connection is closed (e.g. by killing the netcat server). My expectation would be that ldapsearch would exit after 5 seconds, per the NETWORK_TIMEOUT and TIMEOUT options. I'm using the following version of ldapsearch on Fedora 41 (x86-64): > ldapsearch: @(#) $OpenLDAP: ldapsearch 2.6.9 (Mar 27 2025 00:00:00) $ > openldap > (LDAP library: OpenLDAP 20609) This problem is also observable when directly using the OpenLDAP C API. This is more of an issue, since any application using the API could become unresponsive if these timeout values aren't respected. I've attached a short test program which can be used instead of ldapsearch. If I abort the test program while it is stuck in this state, the traceback looks like this: > #0 0x00007f50b7a25811 in __GI___libc_read (fd=3, buf=0x2aaf9ac5, nbytes=3) at ../sysdeps/unix/sysv/linux/read.c:26 > #1 0x00007f50b792f8b9 in sb_debug_read (sbiod=0x2aadf390, buf=0x2aaf9ac5, len=3) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/liblber/sockbuf.c:829 > #2 0x00007f50b7b61156 in tlso_bio_read (b=0x2aadf9c0, buf=0x2aaf9ac5 "", len=3) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/tls_o.c:1279 > #3 0x00007f50b7221ea3 in bread_conv (bio=<optimized out>, data=<optimized out>, datal=<optimized out>, readbytes=0x7ffd1cf2e3f0) > at crypto/bio/bio_meth.c:121 > #4 0x00007f50b7226047 in bio_read_intern (b=b@entry=0x2aadf9c0, data=0x2aaf9ac5, data@entry=0x555f3588, dlen=3, dlen@entry=18446744072487067717, > readbytes=readbytes@entry=0x7ffd1cf2e3f0) at crypto/bio/bio_lib.c:285 > #5 0x00007f50b72261db in BIO_read (b=0x2aadf9c0, data=0x555f3588, dlen=-1222483899) at crypto/bio/bio_lib.c:311 > #6 BIO_read (b=b@entry=0x2aadf9c0, data=data@entry=0x2aaf9ac5, dlen=dlen@entry=3) at crypto/bio/bio_lib.c:303 > #7 0x00007f50b783ce03 in tls_default_read_n (rl=0x2aaec1c0, n=5, max=<optimized out>, extend=<optimized out>, clearold=<optimized out>, > readbytes=0x7ffd1cf2e4b8) at ssl/record/methods/tls_common.c:406 > #8 0x00007f50b784151b in tls_get_more_records (rl=0x2aaec1c0) at ssl/record/methods/tls_common.c:583 > #9 0x00007f50b783b8ea in tls_read_record (rl=0x2aaec1c0, rechandle=0x2aaeb600, rversion=0x2aaeb608, type=0x2aaeb60c "", data=0x2aaeb610, > datalen=0x2aaeb620, epoch=0x0, seq_num=0x0) at ssl/record/methods/tls_common.c:1130 > #10 0x00007f50b783969a in ssl3_read_bytes (ssl=<optimized out>, type=22 '\026', recvd_type=0x7ffd1cf2e684 "", buf=0x2aaee480 "\001", len=4, > peek=0, readbytes=0x7ffd1cf2e688) at ssl/record/rec_layer_s3.c:689 > #11 0x00007f50b784f5a7 in tls_get_message_header (s=0x2aaea980, mt=<synthetic pointer>) at ssl/statem/statem_lib.c:1554 > --Type <RET> for more, q to quit, c to continue without paging-- > #12 read_state_machine (s=0x2aaea980) at ssl/statem/statem.c:625 > #13 state_machine (s=<optimized out>, server=0) at ssl/statem/statem.c:479 > #14 0x00007f50b7b615c3 in tlso_session_connect (ld=<optimized out>, sess=0x2aaea980, name_in=<optimized out>) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/tls_o.c:693 > #15 0x00007f50b7b65bf2 in ldap_int_tls_connect (ld=ld@entry=0x2a9b2430, conn=conn@entry=0x2a9b25d0, host=host@entry=0x2a9b2550 "192.168.133.56") > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/tls2.c:425 > #16 0x00007f50b7b6636f in ldap_int_tls_start (ld=0x2a9b2430, conn=0x2a9b25d0, srv=<optimized out>) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/tls2.c:1245 > #17 0x00007f50b7b3d4c2 in ldap_int_open_connection (ld=0x2a9b2430, conn=0x2a9b25d0, srv=0x2a9b24d0, async=0) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/open.c:515 > #18 0x00007f50b7b5212d in ldap_new_connection (ld=0x2a9b2430, srvlist=0x2a9b2878, use_ldsb=1, connect=<optimized out>, bind=0x0, m_req=0, m_res=0) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/request.c:491 > #19 0x00007f50b7b3c7b4 in ldap_open_defconn (ld=0x2a9b2430) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/open.c:42 > #20 0x00007f50b7b52ed8 in ldap_send_initial_request (ld=0x2a9b2430, msgtype=96, dn=0x4023a9 "cn=admin,dc=solace,dc=com", ber=0x2a9b2570, msgid=1) > at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/request.c:131 > #21 0x00007f50b7b429b9 in ldap_sasl_bind (ld=0x2a9b2430, dn=0x4023a9 "cn=admin,dc=solace,dc=com", mechanism=0x0, cred=0x7ffd1cf2eb90, sctrls=0x0, > cctrls=0x0, msgidp=0x7ffd1cf2eb8c) at /usr/src/debug/openldap-2.6.9-1.fc41.x86_64/openldap-2.6.9/libraries/libldap/sasl.c:164 -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10338] New: constraint overlay rejects empty modifications
by openldap-its＠openldap.org 26 Aug '25

26 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10338 Issue ID: 10338 Summary: constraint overlay rejects empty modifications Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: ondra(a)mistotebe.net Target Milestone: --- If configured even with no rules, a modification with a NULL op->orm_modlist is rejected, despite not being able to break any constraints, e.g.: dn: cn=example changetype: modify # no modifications attached This should at least be configurable. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10301] New: Use assertion control in lastbind chaining
by openldap-its＠openldap.org 26 Aug '25

26 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10301 Issue ID: 10301 Summary: Use assertion control in lastbind chaining Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: ondra(a)mistotebe.net Target Milestone: --- Take a setup with a bunch of consumers tracking lastbind information and replicating this back from the provider. If a client sends a lot of successful binds to it in a very short window, the changes might not have a chance to replicate down so each of these binds has to trigger a new modification to be forwarded. This results in a lot of DB churn and replication traffic that is actually meaningless (the pwdLastChange values before and after each of the mods will be the same). We probably can't avoid having to send something, but the change we send could have an assertion control attached that lets the provider skip it if pwdLastChange>=new_value, saving on all of the additional processing (and additional useless replication traffic). -- You are receiving this mail because: You are on the CC list for the issue.

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[Bug 9186] New: RFE: More metrics in cn=monitor
by openldap-its＠openldap.org 26 Aug '25

26 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=9186 Bug ID: 9186 Summary: RFE: More metrics in cn=monitor Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: michael(a)stroeder.com Target Milestone: --- Currently I'm grepping metrics from syslog with mtail: https://gitlab.com/ae-dir/ansible-ae-dir-server/-/blob/master/templates/mta… With a new binary logging this is not possible anymore. Thus it would be nice if cn=monitor provides more metrics. 1. Overall connection count per listener starting at 0 when started. This would be a simple counter added to: entries cn=Listener 0,cn=Listeners,cn=Monitor 2. Counter for the various "deferring" messages separated by the reason for deferring. 3. Counters for all possible result codes. In my mtail program I also label it with the result type. -- You are receiving this mail because: You are on the CC list for the bug.

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[Issue 10092] New: Local logging doesn't build on Windows
by openldap-its＠openldap.org 19 Aug '25

19 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10092 Issue ID: 10092 Summary: Local logging doesn't build on Windows Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: hyc(a)openldap.org Target Milestone: --- slapd/logging.c uses writev() to write a prefix and the log message together in one call. This feature doesn't exist on Windows. The closest equivalent, WriteFileGather, only works on page sized and aligned writes. On Windows the only way to write as desired is to copy the message into a new buffer first. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10140] New: Add microsecond timestamp format for local file logging
by openldap-its＠openldap.org 19 Aug '25

19 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10140 Issue ID: 10140 Summary: Add microsecond timestamp format for local file logging Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: gnoe(a)symas.com Target Milestone: --- Add microsecond-level timestamps to local file logging. Format is: "YYYY-mm-ddTHH:MM:SS.ffffffZ" The attached patch file is derived from OpenLDAP Software. All of the modifications to OpenLDAP Software represented in the following patch(es) were developed by Gregory Noe gnoe(a)symas.com. I have not assigned rights and/or interest in this work to any party. The attached modifications to OpenLDAP Software are subject to the following notice: Copyright 2023 Gregory Noe Redistribution and use in source and binary forms, with or without modification, are permitted only as authorized by the OpenLDAP Public License. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10378] New: A default build should NOT trigger asserts
by openldap-its＠openldap.org 29 Jul '25

29 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10378 Issue ID: 10378 Summary: A default build should NOT trigger asserts Product: OpenLDAP Version: 2.6.10 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: daniel(a)haxx.se Target Milestone: --- Hello OpenLDAP peeps! The other day I filed a bug [1] against Debian's OpenLDAP packaging because the library they ship can assert and abort due to run-time conditions. A library should never abort (in a release build) but should return a proper error code to allow the application to decide the appropriate next step. I was then informed that this build setup is what upstream (you) recommend and encourage by default. So, I'm here with a weak bug that I think you should shoot down and close immediately if I am wrong. I want to make sure that Debian is wrong, and that we can use OpenLDAP libs in production without causing asserts going forward. Surely Debian can just switch off the debug option, run without asserts and not lose any important functionality? [1] = https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1109791 Thanks! / Daniel -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10365] New: OOM during replication with a lot of updates
by openldap-its＠openldap.org 21 Jul '25

21 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10365 Issue ID: 10365 Summary: OOM during replication with a lot of updates Product: OpenLDAP Version: 2.6.10 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: elecharny(a)apache.org Target Milestone: --- When applying millions of updates on a huge database (30M entries), the server can crash with an out of memory. What happens is that the replication client does not process the incoming updates fast enough, syncprov accumulate the changes in memory up to the point it crashes. The clear workaround: use more memory on the server. Context: the replication mode used is delta-syncrepl, 2 servers, MMR , with MDB and accesslog. My assumption is that it would be valuable to benefit from the fact that we know when the socket is ready for write to actually push data to the replica, which means we can use the changes stored in accesslog and not in memory, while keeping a state of replication. I assume it's a huge change in the way it currently works. There is no urgency, considering it's quite a specific use case, and it would be way faster to slapmodify the changes on a stopped base, then copy the content to the replica, then restart everything. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9849] New: Update website to support LTS and Feature releases
by openldap-its＠openldap.org 15 Jul '25

15 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=9849 Issue ID: 9849 Summary: Update website to support LTS and Feature releases Product: website Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: website Assignee: bugs(a)openldap.org Reporter: mnormann(a)symas.com Target Milestone: --- Modify .wlmrc variable names and website content to handle both Feature Release and Long Term Support release. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10357] New: Potential buffer underflow in function config_find_base
by openldap-its＠openldap.org 01 Jul '25

01 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10357 Issue ID: 10357 Summary: Potential buffer underflow in function config_find_base Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- In function `config_find_base`, we have the code: ```c char *c = dn->bv_val+dn->bv_len; for (;*c != ',';c--); ``` In the loop, if the string doesn't contain any commas, `c` will decrement below `dn->bv_val`, causing buffer underflow when `*c` is accessed. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10354] New: Enhancement: Allow tuning of pwdLastSuccess (like authTimestamp)
by openldap-its＠openldap.org 01 Jul '25

01 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10354 Issue ID: 10354 Summary: Enhancement: Allow tuning of pwdLastSuccess (like authTimestamp) Product: OpenLDAP Version: 2.5.13 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: u.windl(a)ukr.de Target Milestone: --- As I understand it, the function of the lastbind overlay were integrated to slapd core (under different names). While the overly used attribute authTimestamp, slapd uses attribute pwdLastSuccess to record the time of successful bind. So in principle one could activate both at the same time, but the purpose is unclear... Anyway the lastbind overlay allows to configure (among others) the "lastbind-precision", allowing to skip recording of too many successful binds for a while. Unfortunately the slapd core does not offer a comparable thing, so (for example) automated periodic binds (e.g. used for monitoring) may fill a changelog (delta-syncrepl) over time. The proposal is to implement some mechanism of rate limiting for the updates of pwdLastSuccess, or/and allow filtering of DNs that are included/excepted from this mechanism (so automated periodic system accounts may be excepted). -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10297] New: LDAP initialization does unnecessary resolution of hostname
by openldap-its＠openldap.org 20 Jun '25

20 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=10297 Issue ID: 10297 Summary: LDAP initialization does unnecessary resolution of hostname Product: OpenLDAP Version: 2.6.8 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: simon.pichugin(a)gmail.com Target Milestone: --- curl --version does try to resolve local hostname, which is usually stored in $HOSTNAME variable. It seems it does that for no good reason. It does not matter whether machine hostname is already FQDN or not, it always try it unconditionally by calling getaddrinfo(3). Every usage of dnf tries to resolve hostname. That is then supressed by myhostname on Fedora, which returns non-helping response. Possibly, the hostname should be fetched from actual network responses. Seen with: openldap-2.6.8-5.fc41.x86_64 Reproducible: Always Steps to Reproduce: 1. dnf install gdb curl 2. gdb --args curl --version 3. (gdb) break getaddrinfo 4. (gdb) run Actual Results: getaddrinfo is called with current hostname, stored into ldap_int_hostname variable. That is used only when ldap client has not configured target server. But this hostname seems fetched always. Expected Results: No network activity happens, unless something is actually requested. This is not the case. Suggestion is to make it lazy initialized. It should be tried only when necessary. This seems to be useful when tlso_session_chkhost in libraries/libldap/tls_o.c is used. It should initialize hostname only once conditions to use it happens. There is a fallback anyway. It should query FQDN only when name_in contains unusable response. Related: https://github.com/systemd/systemd/issues/34897 -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 7697] RFE: contrib/slapo-lastbind as an official overlay
by openldap-its＠openldap.org 12 Jun '25

12 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=7697 Ondřej Kuzník <ondra(a)mistotebe.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |u.windl(a)ukr.de --- Comment #5 from Ondřej Kuzník <ondra(a)mistotebe.net> --- *** Issue 10354 has been marked as a duplicate of this issue. *** -- You are receiving this mail because: You are on the CC list for the issue.

1 0

[Issue 6083] ppolicy should also support invocation of an external password checker
by openldap-its＠openldap.org 10 Jun '25

10 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=6083 --- Comment #6 from Howard Chu <hyc(a)openldap.org> --- (In reply to Heiko Zelt from comment #4) > PS: and I would like to check, if a password is compromised. I already have > an external checker for this. It just needs an interface to OpenLDAP. > Information about compromised passwords and it's importance can be found at > https://haveibeenpwned.com/ To be clear - you should write your own pwdCheckModule that interfaces to whatever you want to talk to. -- You are receiving this mail because: You are on the CC list for the issue.

1 0

[Issue 10352] New: minor: Improve documentation of option "-n" for ldapdelete
by openldap-its＠openldap.org 10 Jun '25

10 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=10352 Issue ID: 10352 Summary: minor: Improve documentation of option "-n" for ldapdelete Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: documentation Assignee: bugs(a)openldap.org Reporter: u.windl(a)ukr.de Target Milestone: --- The documentation for option "-n" in ldapdelete says: "Show what would be done, but don't actually delete entries. Useful for debugging in conjunction with -v." However using option "-n" without option "-v" does not output anything! So the description should be improved, or "-n" should implicitly enable option "-v". Specifically it's not obvious what "Useful for debugging in conjunction with -v." refers to. -- You are receiving this mail because: You are on the CC list for the issue.

1 3

[Issue 10350] New: Free ch_calloc-allocated memory in error paths
by openldap-its＠openldap.org 10 Jun '25

10 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=10350 Issue ID: 10350 Summary: Free ch_calloc-allocated memory in error paths Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- Created attachment 1079 --> https://bugs.openldap.org/attachment.cgi?id=1079&action=edit Free ch_calloc-allocated memory in error paths 1. In aa_operational, bv_allowed and bv_effective are allocated via ch_calloc. If ja == 0 or je == 0, these memory objects are never freed and do not escape the function, causing potential memory leak. 2. In memberof_db_init, the memory allocated by ch_calloc isn’t released on error paths, leading to another potential leak. -- You are receiving this mail because: You are on the CC list for the issue.

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