CVE-2013-4122
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.
Date published : 2013-10-26
http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d