CVE-2017-12311 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Reference

http://www.securityfocus.com/bid/101855 http://www.securitytracker.com/id/1039827 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cms

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

5.8