CVE-2020-3518 Cisco Data Center Network Manager Cross-Site Scripting Vulnerability

Medium 6.5 Published 26 Aug 2020 Updated 13 Nov 2024

Authenticated attackers can execute arbitrary scripts or steal browser data via XSS in Cisco DCNM web interface.

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-2020-3518?

CVE-2020-3518 is a medium-severity cross-site scripting vulnerability in Cisco Data Center Network Manager, published on 26 Aug 2020. 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 Data Center Network Manager (DCNM) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of the affected software. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface 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-2020-3518?

It affects 1 product.

Products include Cisco Data Center Network Manager.

How do I fix CVE-2020-3518?

No fix has been published for CVE-2020-3518 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-2020-3518 being exploited?

There is no known exploitation of CVE-2020-3518 in the wild and no public exploit code.

All Cisco Data Center Network Manager vulnerabilities

Sources

Also known as GHSA-f87w-3h49-3cqr.