Symantec Scan Engine 5.0.0.24, and possibly other versions before 5.1.0.7, stores sensitive log and virus definition files under the web root with insufficient access control, which allows remote attackers to obtain the information via direct requests.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25974
http://www.vupen.com/english/advisories/2006/1464
http://www.symantec.com/avcenter/security/Content/2006.04.21.html
http://www.securityfocus.com/bid/17637
http://www.securityfocus.com/archive/1/431734/100/0/threaded
http://www.securityfocus.com/archive/1/431728/100/0/threaded
http://securitytracker.com/id?1015974
http://securityreason.com/securityalert/759