CVE-2024-20538 Cisco Identity Services Engine Cross-Site Scripting Vulnerability

Medium 6.1 Published 6 Nov 2024 Updated 6 Nov 2024

Unauthenticated attackers can execute arbitrary scripts or access sensitive data by tricking users into clicking crafted links in the Cisco ISE web interface.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-20538?

CVE-2024-20538 is a medium-severity cross-site scripting vulnerability in Cisco Identity Services Engine, published on 6 Nov 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability in the web-based management interface of Cisco ISE could allow an unauthenticated, remote attacker to conduct an XSS attack against a user of the interface. This vulnerability exists because the web-based management interface does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface on an affected system to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Weakness: CWE-79

Which versions are affected by CVE-2024-20538?

It affects 1 product.

Products include Cisco Identity Services Engine.

How do I fix CVE-2024-20538?

No fix has been published for CVE-2024-20538 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-20538 being exploited?

There is no known exploitation of CVE-2024-20538 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-mwr4-4gh4-7m8j.