Description
The nss_parse_ciphers function in libraries/libldap/tls_m.c in OpenLDAP does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a weaker than intended cipher to be used and allow remote attackers to have unspecified impact via unknown vectors.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openldap | No fix yet | — |
| Debian 13 | openldap | No fix yet | — |
| Debian 12 | openldap | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | openldap +4 | 2.4.40-8.el7 | RHSA-2015:2131 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | openldap | 2.4.57-5 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | openldap +4 | 2.4.40-8.el7 | ELSA-2015-2131 |
Advisories 3
- RHSA-2015:2131 Red Hat Security Advisory: openldap security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- WID-SEC-2024-3166 OpenLDAP: Schwachstelle ermöglicht Manipulation von Daten BSI CERT-Bund (WID) · Oct 14, 2024
- ELSA-2015-2131 Moderate: openldap security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 23, 2015