CVE-2011-5054

kcheckpass passes a user-supplied argument to the pam_start function, often within a setuid environment, which allows local users to invoke any configured PAM stack, and possibly trigger unintended side effects, via an arbitrary valid PAM service name, a different vulnerability than CVE-2011-4122. NOTE: the vendor indicates that the possibility of resultant privilege escalation may be a bit far-fetched.

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

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://c-skills.blogspot.com/2011/11/openpam-trickery.html
• http://openwall.com/lists/oss-security/2011/12/07/3
• http://openwall.com/lists/oss-security/2011/12/08/9
• http://openwall.com/lists/oss-security/2011/12/23/8
• http://openwall.com/lists/oss-security/2011/12/27/1
• http://openwall.com/lists/oss-security/2011/12/27/3
• http://openwall.com/lists/oss-security/2011/12/28/5
• http://openwall.com/lists/oss-security/2012/01/02/10
• http://openwall.com/lists/oss-security/2012/01/02/11
• https://exchange.xforce.ibmcloud.com/vulnerabilities/72230