Improper input validation in Cisco Meeting Server
CVE-2017-12311
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.022 (81.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.022 · change: +0.001
Affected products
- Cisco Meeting Server — versions 2.0, 2.1.0, 2.2.0
- Cisco Meeting Server — versions Cisco Meeting Server
Weakness classification (CWE)
References
- www.securityfocus.com/bid/101855 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securitytracker.com/id/1039827 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115… (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12311?
- CVE-2017-12311 is a medium-severity vulnerability in Cisco Meeting Server, classified under CWE-399. CVSS score: 5.8/10. Published 2017-11-16.
- How severe is CVE-2017-12311?
- Medium severity. CVSS v3 base score is 5.8 out of 10.