Arbitrary PAM Service Invocation Vulnerability in kcheckpass

CVE-2011-5054 · MEDIUM Severity

AV:L/AC:M/AU:N/C:C/I:C/A:C

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."

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