Description
bind.cpp in back-ndb in OpenLDAP 2.4.x before 2.4.24 does not require authentication for the root Distinguished Name (DN), which allows remote attackers to bypass intended access restrictions via an arbitrary password.
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 | 2.4.25-1 | — |
| Debian 13 | openldap | 2.4.25-1 | — |
| Debian 12 | openldap | 2.4.25-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | compat-openldap | 2.4.19_2.3.43-15.el6_0.2 | RHSA-2011:0347 |
| RHEL 6 | openldap +4 | 2.4.19-15.el6_0.2 | RHSA-2011:0347 |
Advisories 1
- RHSA-2011:0347 Red Hat Security Advisory: openldap security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- GLSA-201406-36 vendor-advisory
- http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6661
- http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ndb/bind.cpp.diff?r1=1.5&r2=1.8
- https://bugzilla.redhat.com/show_bug.cgi?id=680472
- 1025190 vdb-entry
- [openldap-announce] 20110212 OpenLDAP 2.4.24 available mailing-list
- MDVSA-2011:056 vendor-advisory
- RHSA-2011:0347 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- [oss-security] 20110225 Re: CVE Request -- OpenLDAP -- two issue mailing-list
- 43718 third-party-advisory
- [oss-security] 20110224 CVE Request -- OpenLDAP -- two issues mailing-list
- USN-1100-1 vendor-advisory
- ADV-2011-0665 vdb-entry
- 43331 third-party-advisory