CVE-2017-12311
moderate-risk
Published 2017-11-16
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.
Do I need to act?
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0.82% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.8/10
Medium
NETWORK
/ LOW complexity
Affected Products (4)
Affected Vendors
References (6)
Third Party Advisory
http://www.securityfocus.com/bid/101855
Third Party Advisory
http://www.securitytracker.com/id/1039827
Third Party Advisory
http://www.securityfocus.com/bid/101855
Third Party Advisory
http://www.securitytracker.com/id/1039827
35
/ 100
moderate-risk
Severity
22/34 · High
Exploitability
3/34 · Minimal
Exposure
10/34 · Low