avpack32.dll before 7.3.0.6 in Avira AntiVir allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry structure that points to a previous file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34080
http://www.vupen.com/english/advisories/2007/1702
http://www.securityfocus.com/bid/23823
http://www.securityfocus.com/archive/1/467646/100/0/threaded
http://securityreason.com/securityalert/2680