PT-2017-17301 · Cisco · Cisco Meeting Server

Published 2017-08-07 · Updated 2019-10-09 · CVE-2017-6763

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco Meeting Server (CMS) version 2.1.4

Description A denial of service condition can be caused by an unauthenticated, remote attacker due to improper validation of Fragmentation Unit (FU-A) protocol packets in the H.264 protocol implementation. An attacker can exploit this by sending a crafted H.264 FU-A packet, potentially causing an unexpected restart of the CMS media process and a brief interruption of media traffic for certain users.

Recommendations For Cisco Meeting Server (CMS) version 2.1.4, update the software to a version that properly validates FU-A protocol packets to prevent the denial of service condition.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2017-6763

Affected Products

Cisco Meeting Server

References · 6

• https://quickview.cloudapps.cisco.com/quickview/bug/CSCve10131 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ms · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-6763 · Security Note
• https://osv.dev/vulnerability/CVE-2017-6763 · Vendor Advisory
• http://securitytracker.com/id/1039058 · Note
• http://securityfocus.com/bid/100111 · Note