The krb5_save_ccname_done function in providers/krb5/krb5_auth.c in System Security Services Daemon (SSSD) 1.5.x before 1.5.7, when automatic ticket renewal and offline authentication are configured, uses a pathname string as a password, which allows local users to bypass Kerberos authentication by listing the /tmp directory to obtain the pathname.
Weakness
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Sssd | Fedoraproject | 1.5.0 (including) | 1.5.0 (including) |
| Sssd | Fedoraproject | 1.5.1 (including) | 1.5.1 (including) |
| Sssd | Fedoraproject | 1.5.2 (including) | 1.5.2 (including) |
| Sssd | Fedoraproject | 1.5.3 (including) | 1.5.3 (including) |
| Sssd | Fedoraproject | 1.5.4 (including) | 1.5.4 (including) |
| Sssd | Fedoraproject | 1.5.5 (including) | 1.5.5 (including) |
| Sssd | Fedoraproject | 1.5.6 (including) | 1.5.6 (including) |
| Sssd | Fedoraproject | 1.5.6.1 (including) | 1.5.6.1 (including) |
| Sssd | Ubuntu | upstream | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/114.html
- https://cwe.mitre.org/data/definitions/115.html
- https://cwe.mitre.org/data/definitions/151.html
- https://cwe.mitre.org/data/definitions/194.html
- https://cwe.mitre.org/data/definitions/22.html
- https://cwe.mitre.org/data/definitions/57.html
- https://cwe.mitre.org/data/definitions/593.html
- https://cwe.mitre.org/data/definitions/633.html
- https://cwe.mitre.org/data/definitions/650.html
- https://cwe.mitre.org/data/definitions/94.html
References
- http://git.fedorahosted.org/git/?p=sssd.git%3Ba=commit%3Bh=fffdae81651b460f3d2c119c56d5caa09b4de42a
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059532.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059619.html
- http://openwall.com/lists/oss-security/2011/04/29/4
- https://bugzilla.redhat.com/show_bug.cgi?id=700867
- https://bugzilla.redhat.com/show_bug.cgi?id=700891
- https://fedorahosted.org/pipermail/sssd-devel/2011-April/006138.html
- https://fedorahosted.org/sssd/ticket/856
- https://fedorahosted.org/sssd/wiki/Releases/Notes-1.5.7
- http://git.fedorahosted.org/git/?p=sssd.git%3Ba=commit%3Bh=fffdae81651b460f3d2c119c56d5caa09b4de42a
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059532.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/059619.html
- http://openwall.com/lists/oss-security/2011/04/29/4
- https://bugzilla.redhat.com/show_bug.cgi?id=700867
- https://bugzilla.redhat.com/show_bug.cgi?id=700891
- https://fedorahosted.org/pipermail/sssd-devel/2011-April/006138.html
- https://fedorahosted.org/sssd/ticket/856
- https://fedorahosted.org/sssd/wiki/Releases/Notes-1.5.7