cisco-sa-ucm-dos-zHS9X9kD: Cisco Unified Communications Products Denial of Service Vulnerability
First published: Wed Apr 20 2022(Updated: )
A vulnerability in the Cisco Discovery Protocol of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, adjacent attacker to cause a kernel panic on an affected system, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by continuously sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause a kernel panic on the system that is running the affected software, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucm-dos-zHS9X9kD
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Unified CM | <14SU1 | 14SU1 |
| Cisco Unified CM SME | <14SU1 | 14SU1 |
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Reference Links
Frequently Asked Questions
What is the Cisco Unified Communications Products Denial of Service vulnerability?
A vulnerability in the Cisco Discovery Protocol of Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition could allow an unauthenticated, adjacent attacker to cause a kernel panic on an affected system, resulting in a denial of service.
How does the vulnerability affect Cisco products?
The vulnerability affects Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME).
How severe is the Cisco Unified Communications Products Denial of Service vulnerability?
The severity rating of the vulnerability is medium with a CVSS score of 5.3.
Which versions of Cisco Unified Communications Manager are affected by the vulnerability?
The vulnerability affects versions up to and excluding 14SU1 of Cisco Unified Communications Manager (Unified CM).
Is there a fix available for the vulnerability?
Yes, Cisco has released a fix for the vulnerability. Affected users should upgrade to version 14SU1 of Cisco Unified Communications Manager (Unified CM).
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