Buffer overflow in yaSSL, as used in MySQL 5.1.x before 5.1.68 and 5.5.x before 5.5.28, has unspecified impact and attack vectors, a different vulnerability than CVE-2013-1492.
https://blogs.oracle.com/sunsecurity/entry/cve_2012_0553_buffer_overflow
http://security.gentoo.org/glsa/glsa-201308-06.xml
http://secunia.com/advisories/53372
http://secunia.com/advisories/52445
http://dev.mysql.com/doc/relnotes/mysql/5.1/en/news-5-1-68.html