Websense Websense Web Filter 6.3.1

Websense Web Security and Web Filter before 6.3.3 Hotfix 27 and 7.x before 7.1.1 allow remote attackers to cause a denial of service (Blue Coat appliance integration outage) via a long URL.

The Remote Filtering component in Websense Web Security and Web Filter before 6.3.3 Hotfix 18 and 7.x before 7.1.1 allows remote attackers to cause a denial of service (daemon exit) via a large volume of traffic.

The ISAPI Filter plug-in in Websense Enterprise, Websense Web Security, and Websense Web Filter 6.3.3 and earlier, when used in conjunction with a Microsoft ISA or Microsoft Forefront TMG server, allows remote attackers to bypass intended filtering and monitoring activities for web traffic via an HTTP Via header.

The Remote Filtering component in Websense Web Security and Web Filter before 7.1 Hotfix 66 allows local users to bypass filtering by (1) renaming the WDC.exe file or (2) deleting driver files.