CVE-2020-3267 Cisco Unified Contact Center Express Improper API Authorization Vulnerability

Medium 5.4 Published 3 Jun 2020 Updated 15 Nov 2024

An authenticated attacker can change any agent's availability state via API, potentially causing denial of service in Cisco Unified CCX.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3267?

CVE-2020-3267 is a medium-severity missing authorization vulnerability in Cisco Unified Contact Center Express, published on 3 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the API subsystem of Cisco Unified Contact Center Express (Unified CCX) could allow an authenticated, remote attacker to change the availability state of any agent. The vulnerability is due to insufficient authorization enforcement on an affected system. An attacker could exploit this vulnerability by authenticating to an affected system with valid agent credentials and performing a specific API call with crafted input. A successful exploit could allow the attacker to change the availability state of an agent, potentially causing a denial of service condition.

Weakness: CWE-552, CWE-285

Which versions are affected by CVE-2020-3267?

It affects 1 product.

Products include Cisco Unified Contact Center Express.

How do I fix CVE-2020-3267?

No fix has been published for CVE-2020-3267 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-3267 being exploited?

There is no known exploitation of CVE-2020-3267 in the wild and no public exploit code.

Sources

Also known as GHSA-9vch-84p9-292x.