CVE-2011-3149

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    CVE-2011-3149

    Published: 22 Jul 2012Last Modified: 10 Apr 2026

    Summary:

    Details: 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).

    References: http://secunia.com/advisories/46583, http://secunia.com/advisories/49711, http://security.gentoo.org/glsa/glsa-201206-31.xml, http://www.ubuntu.com/usn/USN-1237-1, http://git.fedorahosted.org/git/?p=linux-pam.git%3Ba=commitdiff%3Bh=109823cb621c900c07c4b6cdc99070d354d19444, https://bugs.launchpad.net/ubuntu/+source/pam/+bug/874565

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2011-3149 | CVE-DB