Denial of service in Cisco Meeting Server

Published: 2017-08-03 13:52:50
Severity Low
Patch available YES
Number of vulnerabilities 1
CVSSv2 3.7 (AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
CVSSv3 4.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE ID CVE-2017-6763
CWE ID CWE-20
Exploitation vector Network
Public exploit Not available
Vulnerable software Cisco Meeting Server
Vulnerable software versions Cisco Meeting Server 2.1.4
Vendor URL Cisco Systems, Inc
Advisory type Public

Security Advisory

1) Denial of service

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.

Remediation

Install update from vendor's website.

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ms

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