CVE-2015-3238 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161350.html http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161249.html http://rhn.redhat.com/errata/RHSA-2015-1640.html http://www.openwall.com/lists/oss-security/2015/06/25/13 http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html http://www.securityfocus.com/bid/75428 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://bugzilla.redhat.com/show_bug.cgi?id=1228571 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/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

LOW

Base Severity

6.5