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CVE-2016-6851

6.1 · MEDIUM

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5.

Published Dec 15, 2016CWE-79EPSS 2.64%

Overview

CVE-2016-6851 is a medium-severity vulnerability. It was published on December 15, 2016 and has a CVSS 3.0 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code can be provided as parameter to the OX Guard guest reader web application. This allows cross-site scripting attacks against arbitrary users since no prior authentication is needed. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.) in case the user has an active session on the same domain already.

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

Refpacketstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.htmlRefwww.securityfocus.com/archive/1/539395/100/0/threadedRefwww.securityfocus.com/bid/92920Refwww.exploit-db.com/exploits/40377/Refpacketstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.htmlRefwww.securityfocus.com/archive/1/539395/100/0/threadedRefwww.securityfocus.com/bid/92920Refwww.exploit-db.com/exploits/40377/

How CyberStrike helps

Frequently asked questions

What is CVE-2016-6851?

CVE-2016-6851 is a medium-severity vulnerability. It was published on December 15, 2016 and has a CVSS 3.0 base score of 6.1 (MEDIUM).

How severe is CVE-2016-6851?

This vulnerability has a CVSS 3.0 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-6851?

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-2016-6851?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-6851 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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