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CVE-2017-6763

7.5 · HIGH

A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an af…

Published Aug 7, 2017CWE-20EPSS 2.32%

Overview

CVE-2017-6763 is a high-severity vulnerability. It was published on August 7, 2017 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected application does not properly validate Fragmentation Unit (FU-A) protocol packets. An attacker could exploit this vulnerability by sending a crafted H.264 FU-A packet through the affected application. A successful exploit could allow the attacker to cause a DoS condition on the affected system due to an unexpected restart of the CMS media process on the system. Although the CMS platform continues to operate and only the single, affected CMS media process is restarted, a brief interruption of media traffic for certain users could occur. Cisco Bug IDs: CSCve10131.

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

Refwww.securityfocus.com/bid/100111Refwww.securitytracker.com/id/1039058Refquickview.cloudapps.cisco.com/quickview/bug/CSCve10131Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-msRefwww.securityfocus.com/bid/100111Refwww.securitytracker.com/id/1039058Refquickview.cloudapps.cisco.com/quickview/bug/CSCve10131Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ms

How CyberStrike helps

Frequently asked questions

What is CVE-2017-6763?

CVE-2017-6763 is a high-severity vulnerability. It was published on August 7, 2017 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2017-6763?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-6763?

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-2017-6763?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-6763 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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