CVE-2024-20484 Cisco Enterprise Chat and Email Denial of Service Vulnerability

High 7.5 Published 6 Nov 2024 Updated 6 Nov 2024

Unauthenticated remote attackers can cause a denial of service in Cisco Enterprise Chat and Email by sending crafted MR PIM traffic, requiring manual service restart.

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-2024-20484?

CVE-2024-20484 is a high-severity denial of service vulnerability in Cisco Enterprise Chat and Email, published on 6 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the External Agent Assignment Service (EAAS) feature of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of Media Routing Peripheral Interface Manager (MR PIM) traffic that is received by an affected device. An attacker could exploit this vulnerability by sending crafted MR PIM traffic to an affected device. A successful exploit could allow the attacker to trigger a failure on the MR PIM connection between Cisco ECE and Cisco Unified Contact Center Enterprise (CCE), leading to a DoS condition on EAAS that would prevent customers from starting chat, callback, or delayed callback sessions. Note: When the attack traffic stops, the EAAS process must be manually restarted to restore normal operation. To restart the process in the System Console, choose Shared Resources > Services > Unified CCE > EAAS, then click Start.

Weakness: CWE-20

Which versions are affected by CVE-2024-20484?

It affects 1 product.

Products include Cisco Enterprise Chat and Email.

How do I fix CVE-2024-20484?

No fix has been published for CVE-2024-20484 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-2024-20484 being exploited?

There is no known exploitation of CVE-2024-20484 in the wild and no public exploit code.

Sources

Also known as GHSA-jvmc-2wg5-j9pw.