CVE-2013-4122 Information

Description

Cyrus SASL 2.1.23 2.1.26 and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or when FIPS-140 is enabled a (2) DES or (3) MD5 encrypted password which triggers a NULL pointer dereference.

Reference

http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d http://security.gentoo.org/glsa/glsa-201309-01.xml http://www.debian.org/security/2015/dsa-3368 http://www.openwall.com/lists/oss-security/2013/07/12/3 http://www.openwall.com/lists/oss-security/2013/07/12/6 http://www.openwall.com/lists/oss-security/2013/07/13/1 http://www.openwall.com/lists/oss-security/2013/07/15/1 http://www.ubuntu.com/usn/USN-2755-1 https://www.linuxquestions.org/questions/slackware-14/5Bslackware-current5D-glibc-2-17-shadow-and-other-penumbrae-4175461061/