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CVE-2016-9553

7.2 · HIGH

The Sophos Web Appliance (version 4.2.1.3) is vulnerable to two Remote Command Injection vulnerabilities affecting its web administrative interface.

Published Jan 28, 2017CWE-77EPSS 19.81%

Overview

CVE-2016-9553 is a high-severity vulnerability. It was published on January 28, 2017 and has a CVSS 3.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpastebin.com/DUYuN0U5Refswa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRefwww.securityfocus.com/bid/95853Refcommunity.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1Refpastebin.com/DUYuN0U5Refswa.sophos.com/rn/swa/concepts/ReleaseNotes_4.3.1.htmlRefwww.securityfocus.com/bid/95853Refcommunity.sophos.com/products/web-appliance/b/blog/posts/release-of-swa-version-4-3-1

How CyberStrike helps

Frequently asked questions

What is CVE-2016-9553?

CVE-2016-9553 is a high-severity vulnerability. It was published on January 28, 2017 and has a CVSS 3.0 base score of 7.2 (HIGH).

How severe is CVE-2016-9553?

This vulnerability has a CVSS 3.0 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2016-9553?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-9553?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-9553 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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