SB2019020705 - Denial of service in Cisco Meeting Server

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Main Vulnerability Database SB2019020705

SB2019020705 - Denial of service in Cisco Meeting Server

Published: February 7, 2019

Security Bulletin ID SB2019020705
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2019-1676)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the Session Initiation Protocol (SIP) call processing of Cisco Meeting Server (CMS) due to insufficient validation of Session Description Protocol (SDP) messages. A remote attacker can send a specially crafted SDP message to the CMS call bridge and cause the CMS to reload, causing a DoS condition for all connected clients.


2) Input validation error (CVE-ID: CVE-2019-1678)

The vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of coSpaces configuration parameters. A remote attacker can insert specially  crafted strings in specific coSpace parameters and prevent clients from joining a conference call in the affected coSpace. 


Remediation

Install update from vendor's website.

References