Denial of service in Cisco Meeting Server - CVE-2017-6763
Published: August 3, 2017
Vulnerability identifier: #VU7681
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-6763
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Meeting Server
Cisco Meeting Server
Detailed vulnerability description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) due to improper validation of Fragmentation Unit (FU-A) protocol packets. A remote attacker can send a specially crafted H.264 FU-A packet through the affected application and trigger an unexpected restart of the CMS media process.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) due to improper validation of Fragmentation Unit (FU-A) protocol packets. A remote attacker can send a specially crafted H.264 FU-A packet through the affected application and trigger an unexpected restart of the CMS media process.
Successful exploitation of the vulnerability results in denial of service.
How to mitigate CVE-2017-6763
Install update from vendor's website.