The local_handler_callback function in server/responder/pam/pam_LOCAL_domain.c in sssd 0.4.1 does not properly handle blank-password accounts in the SSSD BE database, which allows context-dependent attackers to obtain access by sending the accounts username, in conjunction with an arbitrary password, over an ssh connection.
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 | Fedorahosted | 0.4.1 (including) | 0.4.1 (including) |
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/36018
- http://www.securityfocus.com/bid/35868
- https://bugzilla.redhat.com/attachment.cgi?id=355424
- https://bugzilla.redhat.com/show_bug.cgi?id=514057
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52210
- https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01236.html
- http://secunia.com/advisories/36018
- http://www.securityfocus.com/bid/35868
- https://bugzilla.redhat.com/attachment.cgi?id=355424
- https://bugzilla.redhat.com/show_bug.cgi?id=514057
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52210
- https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01236.html