TippingPoint Zero Day Initiative

Sophos Web Appliance Privilege Escalation and Remote Code Execution Vulnerability

ZDI-14-069: April 8th, 2014


CVSS Score

Affected Vendors

Affected Products

    Web Appliance

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sophos Web Appliance. Authentication is required to exploit this vulnerability.

The specific flaws exist within the change_password and netinterface functions of the web appliance. The first flaw will allow for an unprivileged user to change the admin's password and a remote code execution vulnerability exists when updating the network interface. This allows for an attacker to execute under root privileges.

Vendor Response

Sophos has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2014-01-05 - Vulnerability reported to vendor
    2014-04-08 - Coordinated public release of advisory


This vulnerability was discovered by:
    Brandon Perry