CVE-2016-9554 Information

Description

The Sophos Web Appliance Remote / Secure Web Gateway server (version 4.2.1.3) is vulnerable to a Remote Command Injection vulnerability in its web administrative interface. These vulnerabilities occur in MgrDiagnosticTools.php (/controllers/MgrDiagnosticTools.php) in the component responsible for performing diagnostic tests with the UNIX wget utility. The application doesn’t properly escape the information passed in the ‘url’ variable before calling the executeCommand class function ($this-dtObj-executeCommand). This function calls exec() with unsanitized user input allowing for remote command injection. The page that contains the vulnerabilities /controllers/MgrDiagnosticTools.php is accessed by a built-in command answered by the administrative interface. The command that calls to that vulnerable page (passed in the ‘section’ parameter) is: ‘configuration’. Exploitation of this vulnerability yields shell access to the remote machine under the ‘spiderman’ user account.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Reference

http://pastebin.com/UB8Ye6ZU http://www.securityfocus.com/bid/95858 https://community.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1 The Sophos Web Appliance Remote / Secure Web Gateway server (version 4.2.1.3) is vulnerable to a Remote Command Injection vulnerability in its web administrative interface. These vulnerabilities occur in MgrDiagnosticTools.php (/controllers/MgrDiagnosticTools.php) in the component responsible for performing diagnostic tests with the UNIX wget utility. The application doesn’t properly escape the information passed in the ‘url’ variable before calling the executeCommand class function ($this-dtObj-executeCommand). This function calls exec() with unsanitized user input allowing for remote command injection. The page that contains the vulnerabilities /controllers/MgrDiagnosticTools.php is accessed by a built-in command answered by the administrative interface. The command that calls to that vulnerable page (passed in the ‘section’ parameter) is: ‘configuration’. Exploitation of this vulnerability yields shell access to the remote machine under the ‘spiderman’ user account.

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.2