The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface. These vulnerabilities occur in the MgrReport.php (/controllers/MgrReport.php) component responsible for blocking and unblocking IP addresses from accessing the device. The device doesn't properly escape the information passed in the variables 'unblockip' and 'blockip' before calling the shell_exec() function which allows for system commands to be injected into the device. The code erroneously suggests that the information handled is protected by utilizing the variable name 'escapedips' - however this was not the case. The Sophos ID is NSWA-1258.
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
| Link | Tags |
|---|---|
| http://swa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.html | release notes |
| http://www.securityfocus.com/bid/95853 | third party advisory vdb entry |
| https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1 | release notes |
| http://pastebin.com/DUYuN0U5 | exploit |