CVE-2015-3238

    Dashboard / Vulnerabilities / CVE-2015-3238

    CVE-2015-3238

    Published: 24 Aug 2015Last Modified: 16 Apr 2026

    Summary:

    Details: The _unix_run_helper_binary function in the pam_unix module in Linux-PAM (aka pam) before 1.2.1, when unable to directly access passwords, allows local users to enumerate usernames or cause a denial of service (hang) via a large password.

    References: http://rhn.redhat.com/errata/RHSA-2015-1640.html, http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html, http://www.ubuntu.com/usn/USN-2935-1, http://www.ubuntu.com/usn/USN-2935-2, http://www.ubuntu.com/usn/USN-2935-3, https://security.gentoo.org/glsa/201605-05, https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-011/?fid=6551, https://www.trustwave.com/Resources/SpiderLabs-Blog/Username-Enumeration-against-OpenSSH-SELinux-with-CVE-2015-3238/, https://bugzilla.redhat.com/show_bug.cgi?id=1228571, http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html, http://www.openwall.com/lists/oss-security/2015/06/25/13, http://www.securityfocus.com/bid/75428

    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-2015-3238 | CVE-DB