System Security Services Daemon (SSSD) before 1.0.1, when the krb5 auth_provider is configured but the KDC is unreachable, allows physically proximate attackers to authenticate, via an arbitrary password, to the screen-locking program on a workstation that has any users Kerberos ticket-granting ticket (TGT); and might allow remote attackers to bypass intended access restrictions via vectors involving an arbitrary password in conjunction with a valid TGT.
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 | * | 1.0.0 (including) |
| Sssd | Fedoraproject | 0.2.1 (including) | 0.2.1 (including) |
| Sssd | Fedoraproject | 0.3.0 (including) | 0.3.0 (including) |
| Sssd | Fedoraproject | 0.3.1 (including) | 0.3.1 (including) |
| Sssd | Fedoraproject | 0.3.2 (including) | 0.3.2 (including) |
| Sssd | Fedoraproject | 0.3.3 (including) | 0.3.3 (including) |
| Sssd | Fedoraproject | 0.4.0 (including) | 0.4.0 (including) |
| Sssd | Fedoraproject | 0.4.1 (including) | 0.4.1 (including) |
| Sssd | Fedoraproject | 0.5.0 (including) | 0.5.0 (including) |
| Sssd | Fedoraproject | 0.6.0 (including) | 0.6.0 (including) |
| Sssd | Fedoraproject | 0.6.1 (including) | 0.6.1 (including) |
| Sssd | Fedoraproject | 0.7.0 (including) | 0.7.0 (including) |
| Sssd | Fedoraproject | 0.7.1 (including) | 0.7.1 (including) |
| Sssd | Fedoraproject | 0.99.0 (including) | 0.99.0 (including) |
| Sssd | Fedoraproject | 0.99.1 (including) | 0.99.1 (including) |
| Sssd | Ubuntu | karmic | * |
| Sssd | Ubuntu | lucid | * |
| Sssd | Ubuntu | maverick | * |
| Sssd | Ubuntu | natty | * |
| 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://secunia.com/advisories/38160
- http://www.securityfocus.com/bid/37747
- https://bugzilla.redhat.com/show_bug.cgi?id=553233
- https://fedorahosted.org/sssd/wiki/Releases/Notes-1.0.1
- http://secunia.com/advisories/38160
- http://www.securityfocus.com/bid/37747
- https://bugzilla.redhat.com/show_bug.cgi?id=553233
- https://fedorahosted.org/sssd/wiki/Releases/Notes-1.0.1