CVE-2021-1143 Cisco Connected Mobile Experiences User Enumeration Vulnerability

Medium 4.3 Published 13 Jan 2021 Updated 12 Nov 2024

An authenticated attacker can enumerate system users via API requests due to missing authorization checks in Cisco Connected Mobile Experiences.

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-2021-1143?

CVE-2021-1143 is a medium-severity missing authorization vulnerability in Cisco Connected Mobile Experiences, published on 13 Jan 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in Cisco Connected Mobile Experiences (CMX) API authorizations could allow an authenticated, remote attacker to enumerate what users exist on the system. The vulnerability is due to a lack of authorization checks for certain API GET requests. An attacker could exploit this vulnerability by sending specific API GET requests to an affected device. A successful exploit could allow the attacker to enumerate users of the CMX system.

Weakness: CWE-862, CWE-863

Which versions are affected by CVE-2021-1143?

It affects 1 product.

Products include Cisco Connected Mobile Experiences.

How do I fix CVE-2021-1143?

No fix has been published for CVE-2021-1143 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-2021-1143 being exploited?

There is no known exploitation of CVE-2021-1143 in the wild and no public exploit code.

Sources

Also known as GHSA-xmcr-q7rg-rxqc.