Sophos Anti-Virus 5.1 allows remote attackers to cause a denial of service (memory consumption) via a file that is compressed with Petite and contains a large number of sections.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29918
http://www.vupen.com/english/advisories/2006/4239
http://www.sophos.com/support/knowledgebase/article/7609.html
http://www.securityfocus.com/bid/20816
http://securitytracker.com/id?1017132
http://secunia.com/advisories/22635
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=438