CVE-2023-20108 Denial of service in Cisco Unified Communications Manager IM and Presence Service
An unauthenticated remote attacker can cause a denial of service by sending a crafted login message to the Cisco Unified CM IM&P authentication service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20108?
CVE-2023-20108 is a high-severity denial of service vulnerability in Cisco Unified Communications Manager IM and Presence Service, published on 28 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2023-20108?
It affects 1 product.
Products include Cisco Unified Communications Manager Im and Presence Service.
How do I fix CVE-2023-20108?
No fix has been published for CVE-2023-20108 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-20108 being exploited?
There is no known exploitation of CVE-2023-20108 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager IM and Presence Service
- CVE-2018-0363 Cross-site request forgery in Cisco Unified Communications Manager IM & Presence Service unknown
- CVE-2016-6464 Information disclosure in Cisco Unified Communications Manager
- CVE-2016-1466 Denial of service in n/a
- CVE-2021-1363 Cisco Unified Communications Manager IM & Presence Service SQL Injection Vulnerabilities
- CVE-2021-1365 Cisco Unified Communications Manager IM & Presence Service SQL Injection Vulnerabilities
Sources
Also known as GHSA-8937-gcf5-34xq.