CVE-2023-20108
First published: Wed Jun 28 2023(Updated: )
A vulnerability in the XCP Authentication Service of the Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to cause a temporary service outage for all Cisco Unified CM IM&P users who are attempting to authenticate to the service, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted login message to the affected device. A successful exploit could allow the attacker to cause an unexpected restart of the authentication service, preventing new users from successfully authenticating. Exploitation of this vulnerability does not impact Cisco Unified CM IM&P users who were authenticated prior to an attack.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Unified Communications Manager IM and Presence Service | =12.5\(1\) | |
| Cisco Unified Communications Manager IM and Presence Service | =14su |
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Reference Links
Frequently Asked Questions
What is CVE-2023-20108?
CVE-2023-20108 is a vulnerability in the XCP Authentication Service of the Cisco Unified Communications Manager IM & Presence Service that can cause a temporary service outage for all users attempting to authenticate.
How does CVE-2023-20108 affect Cisco Unified Communications Manager IM & Presence Service?
CVE-2023-20108 affects the XCP Authentication Service of Cisco Unified Communications Manager IM & Presence Service, potentially causing a temporary service outage.
What is the severity of CVE-2023-20108?
CVE-2023-20108 has a severity of 7.5 (High).
How can I mitigate CVE-2023-20108?
To mitigate CVE-2023-20108, please apply the necessary updates provided by Cisco.
Where can I find more information about CVE-2023-20108?
You can find more information about CVE-2023-20108 in the Cisco Security Advisory.
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