openldap-bugs January 2024

openldap-bugs@openldap.org

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[Issue 10162] New: Fix for binary attributes data corruption in back-sql
by openldap-its＠openldap.org 20 May '26

20 May '26

https://bugs.openldap.org/show_bug.cgi?id=10162 Issue ID: 10162 Summary: Fix for binary attributes data corruption in back-sql Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: dex.tracers(a)gmail.com Target Milestone: --- Created attachment 1006 --> https://bugs.openldap.org/attachment.cgi?id=1006&action=edit Fix for binary attributes corruption on backed-sql I've configured slapd to use back-sql (mariadb through odbc) and observed issues with the BINARY data retrievals from the database. The length of the attributes was properly reported, but the correct data inside was always 16384 bytes and after that point - some junk (usually filled-up with AAAAAAAA and some other attributes data from memory). During the debugging - I've noticed that: - The MAX_ATTR_LEN (16384 bytes) is used to set the length of the data for BINARY columns when SQLBindCol is done inside of the "backsql_BindRowAsStrings_x" function - After SQLFetch is done - data in row->cols[i] is fetched up to the specified MAX_ATTR_LEN - After SQLFetch is done - the correct data size (greater than MAX_ATTR_LEN) is represented inside of the row->value_len I'm assuming that slapd allocates the pointer in memory (row->cols[i]), fills it with the specified amount of data (MAX_ATTR_LEN), but when forming the actual attribute data - uses the length from row->value_len and so everything from 16384 bytes position till row->value_len is just a junk from the memory (uninitialized, leftovers, data from other variables). After an investigation, I've find-out that: - for BINARY or variable length fields - SQLGetData should be used - SQLGetData supports chunked mode (if length is unknown) or full-read mode if the length is known - it could be used in pair with SQLBindCol after SQLFetch (!) Since we have the correct data length inside of row->value_len, I've just added the code to the backsql_get_attr_vals() function to overwrite the corrupted data with the correct data by issuing SQLGetData request. And it worked - binary data was properly retrieved and reported over LDAP! My current concerns / help needed - I'm not very familiar with the memory allocation/deallocation mechanisms, so I'm afraid that mentioned change can lead to memory corruption (so far not observed). Please review attached patch (testing was done on OPENLDAP_REL_ENG_2_5_13, and applied on the master branch for easier review/application). -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9796] New: Deprecate GnuTLS support
by openldap-its＠openldap.org 19 May '26

19 May '26

https://bugs.openldap.org/show_bug.cgi?id=9796 Issue ID: 9796 Summary: Deprecate GnuTLS support Product: OpenLDAP Version: 2.6.1 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Support for GnuTLS was added specifically for the Debian (and thus Ubuntu) due to the license objections at the time that the Debian project had for the OpenSSL license. Since that time, Debian has reclassified OpenSSL as a core library and the OpenSSL project has resolved the original complaint by licensing OpenSSL 3 and later under the Apache License v2. Thus there is no longer a reason to maintain support for GnuTLS and given the long standing concerns over the security and quality of the GnuTLS bridge in addition to the extra cost of maintaining that code, it should be marked as deprecated and removed in a future release. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9367] New: back-mdb: encryption support
by openldap-its＠openldap.org 15 May '26

15 May '26

https://bugs.openldap.org/show_bug.cgi?id=9367 Issue ID: 9367 Summary: back-mdb: encryption support Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Need to add encryption support to the back-mdb backend, depends on issue#9364 -- You are receiving this mail because: You are on the CC list for the issue.

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[Bug 9225] New: back-mdb: Add support for PREPARE/2-phase commit
by openldap-its＠openldap.org 13 May '26

13 May '26

https://bugs.openldap.org/show_bug.cgi?id=9225 Bug ID: 9225 Summary: back-mdb: Add support for PREPARE/2-phase commit Product: OpenLDAP Version: 2.4.50 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Add support for PREPARE/2-phase commit in back-mdb -- You are receiving this mail because: You are on the CC list for the bug.

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[Bug 9211] New: Relax control is not consistently access-restricted
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=9211 Bug ID: 9211 Summary: Relax control is not consistently access-restricted Product: OpenLDAP Version: 2.4.49 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: ryan(a)openldap.org Target Milestone: --- The following operations can be performed by anyone having 'write' access (not even 'manage') using the Relax control: - modifying/replacing structural objectClass - adding/modifying OBSOLETE attributes Some operations are correctly restricted: - adding/modifying NO-USER-MODIFICATION attributes marked as manageable (Modification of non-conformant objects doesn't appear to be implemented at all.) In the absence of ACLs for controls, I'm of the opinion that all use of the Relax control should require manage access. The Relax draft clearly and repeatedly discusses its use cases in terms of directory _administrators_ temporarily relaxing constraints in order to accomplish a specific task. -- You are receiving this mail because: You are on the CC list for the bug.

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[Bug 9204] New: slapo-constraint allows anyone to apply Relax control
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=9204 Bug ID: 9204 Summary: slapo-constraint allows anyone to apply Relax control Product: OpenLDAP Version: 2.4.49 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: overlays Assignee: bugs(a)openldap.org Reporter: ryan(a)openldap.org Target Milestone: --- slapo-constraint doesn't limit who can use the Relax control, beyond the global limits applied by slapd. In practice, for many modifications this means any configured constraints are advisory only. In my opinion this should be considered a bug, in design if not implementation. I expect many admins would not read the man page closely enough to realize the behaviour does technically adhere to the letter of what's written there. Either slapd should require manage privileges for the Relax control globally, or slapo-constraint should perform a check for manage privilege itself, like slapo-unique does. Quoting ando in https://bugs.openldap.org/show_bug.cgi?id=5705#c4: > Well, a user with "manage" privileges on related data could bypass > constraints enforced by slapo-constraint(5) by using the "relax" > control. The rationale is that a user with manage privileges could be > able to repair an entry that needs to violate a constraint for good > reasons. Note that the user: > > - must have enough privileges to do it (manage) > > - must inform the DSA that intends to violate the constraint (by using > the control) but such privileges are currently not being required. -- You are receiving this mail because: You are on the CC list for the bug.

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[Issue 9640] New: ACL privilege for MOD_INCREMENT
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=9640 Issue ID: 9640 Summary: ACL privilege for MOD_INCREMENT Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: michael(a)stroeder.com Target Milestone: --- I'm using LDAP write operations with MOD_INCREMENT with pre-read-control for uidNumber/gidNumber generation. I'd like to limit write access to an Integer attribute "nextID" to MOD_INCREMENT, ideally even restricting the de-/increment value. (Uniqueness is achieved with slapo-unique anyway but still I'd like to avoid users messing with this attribute). IMHO the ideal solution would be a new privilege "i". Example for limiting write access to increment by one and grant read access for using read control: access to attrs=nextID val=1 by group=... =ri Example for decrementing by two without read: access to attrs=nextID val=-2 by group=... =i -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10163] New: Cleanup configure/test integration
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=10163 Issue ID: 10163 Summary: Cleanup configure/test integration Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: build Assignee: bugs(a)openldap.org Reporter: hyc(a)openldap.org Target Milestone: --- The sed commandline configure uses to perform substitutions is getting unwieldy and may be exceeding platform limits on various systems. All of the BUILD_xxx substitutions for overlays are only used in tests/run.in. They could be completely removed, and instead each of the enabled overlays could be emitted into a separate file that just gets included by the test scripts. There's no need for them to be part of the sed invocation at all. There's also leftover BUILD_xxx cruft from backends that we've removed (e.g. back-shell BUILD_SHELL) that nothing else in the tree references any more. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9739] New: Undefined reference to ber_sockbuf_io_udp in 2.6.0
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=9739 Issue ID: 9739 Summary: Undefined reference to ber_sockbuf_io_udp in 2.6.0 Product: OpenLDAP Version: 2.6.0 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: build Assignee: bugs(a)openldap.org Reporter: simon.pichugin(a)gmail.com Target Milestone: --- While I was trying to build OpenLDAP 2.6 on Fedora Rawhide I've got the error message: /usr/bin/ld: ./.libs/libldap.so: undefined reference to `ber_sockbuf_io_udp' I've checked commits from https://bugs.openldap.org/show_bug.cgi?id=9673 and found that 'ber_sockbuf_io_udp' was not added to https://git.openldap.org/openldap/openldap/-/blob/master/libraries/liblber/… I've asked on the project's mailing list and got a reply: "That symbol only exists if OpenLDAP is built with LDAP_CONNECTIONLESS defined, which is not a supported feature. Feel free to file a bug report at https://bugs.openldap.org/" https://lists.openldap.org/hyperkitty/list/openldap-technical@openldap.org/… Hence, creating the bug. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9619] New: mdb_env_copy2 with MDB_CP_COMPACT in mdb.master3 produces corrupt mdb file
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=9619 Issue ID: 9619 Summary: mdb_env_copy2 with MDB_CP_COMPACT in mdb.master3 produces corrupt mdb file Product: LMDB Version: 0.9.29 Hardware: All OS: Windows Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: kriszyp(a)gmail.com Target Milestone: --- When copying an LMDB database with mdb_env_copy2 with the MDB_CP_COMPACT with mdb.master3, the resulting mdb file seems to be corrupt and when using it in LMDB, I get segmentation faults. Copying without the compacting flag seems to work fine. I apologize, I know this is not a very good issue report, as I haven't had a chance to actually narrow this down to a more reproducible/isolated case, or look for how to patch. I thought I would report in case there are any ideas on what could cause this. The segmentation faults always seem to be memory write faults (as opposed to try fault on trying to read). Or perhaps the current backup/copying functionality is eventually going to be replaced by incremental backup/copying anyway (https://twitter.com/hyc_symas/status/1315651814096875520). I'll try to update this if I get a chance to investigate more, but otherwise feel free to ignore/consider low-priority since the work around is easy. -- You are receiving this mail because: You are on the CC list for the issue.

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openldap-bugs January 2024