CVE-2019-1845: Cisco Unified Communications Manager IM&P Service, Cisco TelePresence VCS, and Cisco Expressway Series Denial of Service Vulnerability
First published: Wed Jun 05 2019(Updated: )
A vulnerability in the authentication service of the Cisco Unified Communications Manager IM and Presence (Unified CM IM&P) Service, Cisco TelePresence Video Communication Server (VCS), and Cisco Expressway Series could allow an unauthenticated, remote attacker to cause a service outage for users attempting to authenticate, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient controls for specific memory operations. An attacker could exploit this vulnerability by sending a malformed Extensible Messaging and Presence Protocol (XMPP) authentication request to an affected system. A successful exploit could allow the attacker to cause an unexpected restart of the authentication service, preventing users from successfully authenticating. Exploitation of this vulnerability does not impact users who were authenticated prior to an attack.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco TelePresence Video Communication Server | >=x8.1<=x12.5.2 | |
| Cisco Unified Communications Manager IM and Presence Service | =11.5\(1\) |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1845?
CVE-2019-1845 is a vulnerability in the authentication service of the Cisco Unified Communications Manager IM and Presence (Unified CM IM&P) Service, Cisco TelePresence Video Communication Server (VCS), and Cisco Expressway Series.
What is the severity of CVE-2019-1845?
The severity of CVE-2019-1845 is rated as high with a severity value of 8.6.
How can an attacker exploit CVE-2019-1845?
An unauthenticated remote attacker can exploit CVE-2019-1845 to cause a service outage for users.
Which software products are affected by CVE-2019-1845?
Cisco TelePresence Video Communication Server and Cisco Unified Communications Manager IM and Presence Service are affected by CVE-2019-1845.
How can I mitigate CVE-2019-1845?
To mitigate CVE-2019-1845, it is recommended to apply the necessary patches or updates provided by Cisco.
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- canonical/cisco telepresence video communication server
- version/cisco telepresence video communication server/x8.1
- version/cisco telepresence video communication server/x12.5.2
- canonical/cisco unified communications manager im and presence service
- version/cisco unified communications manager im and presence service/11.5\(1\)