Sophos Web Appliance before 3.7.8.2 allows (1) remote attackers to execute arbitrary commands via shell metacharacters in the client-ip parameter to the Block page, when using the user_workstation variable in a customized template, and remote authenticated users to execute arbitrary commands via shell metacharacters in the (2) url parameter to the Diagnostic Tools functionality or (3) entries parameter to the Local Site List functionality.
Improper Neutralization of Special Elements used in an OS Command The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.