CVE-2024-20387 Cross-site scripting in Cisco Firepower Management Center

Medium 5.4 Published 23 Oct 2024 Updated 24 Oct 2024

Authenticated attackers can inject malicious scripts into Cisco FMC, enabling stored XSS attacks against users.

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

What is CVE-2024-20387?

CVE-2024-20387 is a medium-severity cross-site scripting vulnerability in Cisco Secure Firewall Management Center, published on 23 Oct 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability in the web-based management interface of Cisco FMC Software could allow an authenticated, remote attacker to store malicious content for use in XSS attacks. This vulnerability is due to improper input sanitization in the web-based management interface of Cisco FMC Software. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to conduct a stored XSS attack on an affected device.

Weakness: CWE-79

Which versions are affected by CVE-2024-20387?

It affects 2 products.

Products include Cisco Firepower Management Center, Cisco Secure Firewall Management Center.

How do I fix CVE-2024-20387?

No fix has been published for CVE-2024-20387 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-2024-20387 being exploited?

There is no known exploitation of CVE-2024-20387 in the wild and no public exploit code.

All Cisco Secure Firewall Management Center vulnerabilities

Sources

Also known as GHSA-hr33-3275-hjcv.