Description
The auth_send function in providers/ldap/ldap_auth.c in System Security Services Daemon (SSSD) 1.3.0, when LDAP authentication and anonymous bind are enabled, allows remote attackers to bypass the authentication requirements of pam_authenticate via an empty 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 | sssd | 1.2.1-4 | — |
| Debian 13 | sssd | 1.2.1-4 | — |
| Debian 12 | sssd | 1.2.1-4 | — |
References
- sssd-ldap-security-bypass(61399) vdb-entry
- 41159 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=625189