CVE-2016-9554: Command Injection
First published: Sat Jan 28 2017(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Sophos Web Appliance Firmware | =4.2.1.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2016-9554?
CVE-2016-9554 has been assigned a medium severity rating due to the potential for remote command injection.
How do I fix CVE-2016-9554?
To fix CVE-2016-9554, update the Sophos Web Appliance to version 4.3.1 or later.
What systems are affected by CVE-2016-9554?
CVE-2016-9554 affects the Sophos Web Appliance version 4.2.1.3.
Can CVE-2016-9554 be exploited remotely?
Yes, CVE-2016-9554 can be exploited remotely through the web administrative interface.
What component is responsible for the vulnerability in CVE-2016-9554?
The vulnerability in CVE-2016-9554 resides in the MgrDiagnosticTools.php component of the Sophos Web Appliance.
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