CVE-2016-9554
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Sophos Web Appliance 4.2.1.3 - DiagnosticTools Remote Command Injection (Metasploit)
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| sophos | web_appliance | 4.2.1.3 | |
References
- 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
- 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
CWEs
CWE-77
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.