Description
libraries/libldap/tls_m.c in OpenLDAP, possibly 2.4.31 and earlier, when using the Mozilla NSS backend, always uses the default cipher suite even when TLSCipherSuite is set, which might cause OpenLDAP to use weaker ciphers than intended and make it easier for remote attackers to obtain sensitive information.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | openldap +4 | 2.4.23-26.el6_3.2 | RHSA-2012:1151 |
Advisories 1
- RHSA-2012:1151 Red Hat Security Advisory: openldap security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- [oss-security] 20120606 Re: CVE request: openldap does not honor TLSCipherSuite configuration option mailing-list
- GLSA-201406-36 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=676309
- RHSA-2012:1151 vendor-advisory
- http://www.openldap.org/its/index.cgi?findid=7285
- [oss-security] 20120605 CVE request: openldap does not honor TLSCipherSuite configuration option mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=825875
- [oss-security] 20120605 Re: CVE request: openldap does not honor TLSCipherSuite configuration option mailing-list
- openldap-nss-weak-security(76099) vdb-entry
- 1027127 vdb-entry
- http://www.openldap.org/devel/gitweb.cgi?p=openldap.git%3Ba=commitdiff%3Bh=2c2bb2e
- 53823 vdb-entry
- https://support.apple.com/kb/HT210788
- 20191211 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra mailing-list
- 20191213 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High Sierra mailing-list