June 2020 - openldap-bugs

[Issue 9278] New: liblmdb: robust mutexes should not be unmapped

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9278 Issue ID: 9278 Summary: liblmdb: robust mutexes should not be unmapped Product: LMDB Version: unspecified Hardware: All OS: FreeBSD Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: delphij(a)freebsd.org Target Milestone: --- Created attachment 736 --> https://bugs.openldap.org/attachment.cgi?id=736&action=edit A possible workaround We recently noticed that lmdb would have the memory region containing the robust mutex unmapped on mdb_env_close0(): munmap((void *)env->me_txns, (env->me_maxreaders-1)*sizeof(MDB_reader)+sizeof(MDB_txninfo)); Note that if this is the last unmap for a robust mutex, the FreeBSD implementation would garbage-collect the mutex, making it no longer visible to other processes. As the result, a second instance of the attached test.c (from https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244493 with minor changes) would trigger the assertion at mdb_txn_begin() because the acquisition of the mutex would return 22 (EINVAL), because the mutex appeared to be a robust mutex, but was invalid. The attached lmdb.diff is a possible workaround for this (it would skip unmapping when setting up the robust mutex for the first time). -- You are receiving this mail because: You are on the CC list for the issue.

1 week, 1 day

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[Bug 9244] New: API calls blocking after async connect

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9244 Bug ID: 9244 Summary: API calls blocking after async connect Product: OpenLDAP Version: 2.4.49 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: ryan(a)openldap.org Target Milestone: --- Created attachment 721 --> https://bugs.openldap.org/attachment.cgi?id=721&action=edit async connect test without TLS My understanding of LDAP_OPT_CONNECT_ASYNC is that the attached program should not block. If the connection does not establish fast enough, the bind call is supposed to return LDAP_X_CONNECTING. (At least that's how I understand it, based on the original behaviour (circa 2.4.23 up to 2.4.40) as well as the bind loop in back-meta. On the other hand, the man page does "Subsequent calls to library routines will poll for completion of the connect before performing further operations" which might be interpreted as meaning they would block...) In current releases it does block, as demonstrated by strace on Linux (latency added using 'tc qdisc'): [...] connect(3, {sa_family=AF_INET, sin_port=htons(389), sin_addr=inet_addr("192.168.1.204")}, 16) = -1 EINPROGRESS (Operation now in progress) write(3, "0\f\2\1\1`\7\2\1\3\4\0\200\0", 14) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=3, events=POLLOUT|POLLERR|POLLHUP}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) write(3, "0\f\2\1\1`\7\2\1\3\4\0\200\0", 14) = 14 poll([{fd=3, events=POLLIN|POLLPRI}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) read(3, "0\f\2\1\1a\7\n", 8) = 8 read(3, "\1\0\4\0\4\0", 6) = 6 write(2, "OK: ldap_simple_bind_returned 0 "..., 42OK: ldap_simple_bind_returned 0 (Success) ) = 42 [...] As discussed in IRC, I believe I bisected this down to commit ae6347bac, from bug 8022. The reasoning is sound, but ldap_int_open_connection does not actually return -2, only -1 or 0. The patch is simple enough, but I'm also looking at some later commits that were probably done to work around this, and might not be needed now (bug 8957, bug 8968, bug 8980). Also need to test all setups thoroughly (ldap, ldaps, STARTTLS, not to mention back-meta/asyncmeta). I also notice that LDAP_OPT_CONNECT_ASYNC is not effective unless LDAP_OPT_NETWORK_TIMEOUT is also set. It might be intentional, but the man page doesn't mention this specifically, and I don't see why it would be necessary... -- You are receiving this mail because: You are on the CC list for the bug.

1 week, 2 days

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[Bug 9229] New: Make liblutil usable by libldap

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9229 Bug ID: 9229 Summary: Make liblutil usable by libldap Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: build Assignee: bugs(a)openldap.org Reporter: ryan(a)openldap.org Target Milestone: --- liblutil is a static library (non-PIC) and so cannot be linked into shared objects, however we have several use cases for reusing its code in libldap. Some options: - moving more code from liblutil to libldap - just merge the whole thing? - are there components that link liblutil but _not_ libldap? - build liblutil as PIC (take a minor performance hit when linked into programs?) - build liblutil twice (liblutil.a and liblutil_pic.a) - symlink liblutil sources into libldap build dir, like libldap_r does with libldap - both of these last options require checking whether executables can call the PIC symbols safely (if some symbols are used by both library and program code) Nice-to-have for 2.5, I'd say more likely for 2.6 at this point. -- You are receiving this mail because: You are on the CC list for the bug.

2 weeks, 5 days

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[Bug 9256] New: The ACLs required for SASL binding are not fully documented

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9256 Bug ID: 9256 Summary: The ACLs required for SASL binding are not fully documented Product: OpenLDAP Version: 2.5 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: documentation Assignee: bugs(a)openldap.org Reporter: kop(a)karlpinc.com Target Milestone: --- Created attachment 727 --> https://bugs.openldap.org/attachment.cgi?id=727&action=edit Patch massaging the SASL binding requirement docs While some ACL requirements for SASL binding are documented, some are not. E.g, that olcAuthzRegexp requires =x on objectClass when direct DN mapping is not documented. Other requirements can be reasoned out based on the existing documentation, but this can be very difficult when unfamiliar with all the moving parts and the places they are documented. E.g. knowing that (objectClass=*) is the default filter, and that there's _always_ _some_ filter, and connecting this with ACLs required to do search-based SASL mapping. The attached patch brings all the SASL binding requirements together in one place in the docs and makes everything explicit. The word "SASL" is included, for those searching for that keyword. I, Karl O. Pinc, hereby place the following modifications to OpenLDAP Software (and only these modifications) into the public domain. Hence, these modifications may be freely used and/or redistributed for any purpose with or without attribution and/or other notice. -- You are receiving this mail because: You are on the CC list for the bug.

1 year, 3 months

1
27
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[Bug 9189] New: Add GSSAPI channel-bindings support

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9189 Bug ID: 9189 Summary: Add GSSAPI channel-bindings support Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: iboukris(a)gmail.com Target Milestone: --- Recently MS has announce they plan to enforce channel-bindings for LDAP over TLS (ADV190023). To support it on client side, we need to pass "tls-endpoint" bindings (RFC 5929) to the SASL plugin, and make use of that in GSSAPI. See also: https://github.com/cyrusimap/cyrus-sasl/pull/601 -- You are receiving this mail because: You are on the CC list for the bug.

1 year, 3 months

1
13
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[Issue 9282] New: Syncrepl re-creates deleted entry

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9282 Issue ID: 9282 Summary: Syncrepl re-creates deleted entry Product: OpenLDAP Version: 2.4.50 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Scenario: 2 node Multi-provider replication Add database to provider A ensure database replicates to provider B Stop provider A delete entry on provider B Start provider A Wait for provider B to reconnect to provider A Deleted entry re-appears -- You are receiving this mail because: You are on the CC list for the issue.

1 year, 5 months

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22
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[Bug 9200] New: 2.4 to 2.5 upgrade documentation

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9200 Bug ID: 9200 Summary: 2.4 to 2.5 upgrade documentation Product: OpenLDAP Version: 2.5 Hardware: All OS: All Status: UNCONFIRMED Severity: blocker Priority: --- Component: documentation Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- For the 2.5 release, we need to document the upgrade procedures for moving from OpenLDAP 2.4 to OpenLDAP 2.5. -- You are receiving this mail because: You are on the CC list for the bug.

1 year, 9 months

1
20
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[Bug 9220] New: Rewrite Bind and Exop result handling

by openldap-its＠openldap.org

https://bugs.openldap.org/show_bug.cgi?id=9220 Bug ID: 9220 Summary: Rewrite Bind and Exop result handling Product: OpenLDAP Version: 2.5 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- Bind and Exop result handling needs a rewrite so it is no longer a special case for overlays. -- You are receiving this mail because: You are on the CC list for the bug.

1 year, 10 months

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[Bug 9204] New: slapo-constraint allows anyone to apply Relax control

by openldap-its＠openldap.org

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.

1 year, 10 months

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10
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[Bug 9211] New: Relax control is not consistently access-restricted

by openldap-its＠openldap.org

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.

1 year, 10 months

1
11
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openldap-bugs June 2020