CVE-2013-2179 Information

Description

X.Org xdm 1.1.10 1.1.11 and possibly other versions when performing authentication using certain implementations of the crypt API function that can return NULL allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by attempting to log into an account whose password field contains invalid characters as demonstrated using the crypt function from glibc 2.17 and later with (1) the !\ character in the salt portion of a password field or (2) a password that has been encrypted using DES or MD5 in FIPS-140 mode.

Reference

http://cgit.freedesktop.org/xorg/app/xdm/commit/?id=8d1eb5c74413e4c9a21f689fc106949b121c0117 http://lists.opensuse.org/opensuse-updates/2013-07/msg00002.html http://www.openwall.com/lists/oss-security/2013/06/13/8 https://bugs.mageia.org/show_bug.cgi?id=10682