UBUNTU-CVE-2013-4122

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UBUNTU-CVE-2013-4122

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2013-4122, http://openwall.com/lists/oss-security/2013/07/12/3, http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d, https://ubuntu.com/security/notices/USN-1988-1, https://ubuntu.com/security/notices/USN-2755-1, https://www.cve.org/CVERecord?id=CVE-2013-4122