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CVE-2017-12311

5.8 · MEDIUM

A vulnerability in the H.264 decoder function of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a Cisco Meeting Server media process to restart unexpectedly when it r…

Published Nov 16, 2017CWE-399EPSS 2.20%

Overview

CVE-2017-12311 is a medium-severity vulnerability. It was published on November 16, 2017 and has a CVSS 3.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability in the H.264 decoder function of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a Cisco Meeting Server media process to restart unexpectedly when it receives an illegal H.264 frame. The vulnerability is triggered by an H.264 frame that has an invalid picture parameter set (PPS) value. An attacker could exploit this vulnerability by sending a malformed H.264 frame to the targeted device. An exploit could allow the attacker to cause a denial of service (DoS) condition because the media process could restart. The media session should be re-established within a few seconds, during which there could be a brief interruption in service. Cisco Bug IDs: CSCvg12559.

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/101855Refwww.securitytracker.com/id/1039827Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cmsRefwww.securityfocus.com/bid/101855Refwww.securitytracker.com/id/1039827Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cms

How CyberStrike helps

Frequently asked questions

What is CVE-2017-12311?

CVE-2017-12311 is a medium-severity vulnerability. It was published on November 16, 2017 and has a CVSS 3.0 base score of 5.8 (MEDIUM).

How severe is CVE-2017-12311?

This vulnerability has a CVSS 3.0 base score of 5.8, 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-2017-12311?

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-2017-12311?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-12311 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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