Description
OpenLDAP 1.0 through 2.1.19, as used in Apple Mac OS 10.3.4 and 10.3.5 and possibly other operating systems, may allow certain authentication schemes to use hashed (crypt) passwords in the userPassword attribute as if they were plaintext passwords, which allows remote attackers to re-use hashed passwords without decrypting them.
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 3 | nss_ldap | 207-17 | RHSA-2005:751 |
| RHEL 3 | openldap +3 | 2.0.27-20 | RHSA-2005:751 |
Advisories 1
- RHSA-2005:751 Red Hat Security Advisory: openldap and nss_ldap security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- openldap-crypt-gain-access(17300) vdb-entry
- http://support.avaya.com/elmodocs2/security/ASA-2006-157.htm
- RHSA-2005:751 vendor-advisory
- 12491 third-party-advisory
- 11137 vdb-entry
- ESB-2004.0559 third-party-advisory
- 21520 third-party-advisory
- APPLE-SA-2004-09-07 vendor-advisory
- 17233 third-party-advisory
- oval:org.mitre.oval:def:10703 vdb-entry signature