Symantec Decomposer, as used in certain Symantec antivirus products including Symantec Scan Engine 5.1.2 and other versions before 5.1.6.31, allows remote attackers to cause a denial of service (memory consumption) via a malformed RAR file to the Internet Content Adaptation Protocol (ICAP) port (1344/tcp).
http://www.vupen.com/english/advisories/2008/0680
http://www.symantec.com/avcenter/security/Content/2008.02.27.html
http://www.securitytracker.com/id?1019503
http://www.securityfocus.com/bid/27911
http://secunia.com/advisories/29140
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=666