Denial of Service Vulnerability in Linux-PAM's _expand_arg Function

CVE-2011-3149 · LOW Severity

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

The _expand_arg function in the pam_env module (modules/pam_env/pam_env.c) in Linux-PAM (aka pam) before 1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users to cause a denial of service (CPU consumption).

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