CVE-2020-3587 Cisco SD-WAN vManage Software Cross-Site Scripting Vulnerability

Medium 6.4 Published 6 Nov 2020 Updated 13 Nov 2024

An authenticated attacker can execute arbitrary scripts or access sensitive browser data via XSS in the Cisco SD-WAN vManage web interface.

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-2020-3587?

CVE-2020-3587 is a medium-severity cross-site scripting vulnerability in Cisco Catalyst Sd-Wan Manager, published on 6 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the web-based management interface of the Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user. 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 to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information.

Weakness: CWE-79

Which versions are affected by CVE-2020-3587?

It affects 2 products.

Products include Cisco Catalyst Sd-Wan Manager, Cisco Sd-Wan Vmanage.

How do I fix CVE-2020-3587?

No fix has been published for CVE-2020-3587 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-2020-3587 being exploited?

There is no known exploitation of CVE-2020-3587 in the wild and no public exploit code.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-m98j-fxjm-6v2p.