The unpack feature in ClamAV 0.93.3 and earlier allows remote attackers to cause a denial of service (segmentation fault) via a corrupted LZH file.
http://www.securityfocus.com/bid/32752
http://www.securityfocus.com/archive/1/499078/100/0/threaded
http://www.ivizsecurity.com/security-advisory-iviz-sr-08011.html