CVE-2020-3536 Cisco SD-WAN vManage Cross-Site Scripting Vulnerability

Medium 6.4 Published 8 Oct 2020 Updated 13 Nov 2024

An authenticated attacker can inject malicious scripts into the Cisco SD-WAN vManage web interface to execute arbitrary code in the victim's browser.

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-2020-3536?

CVE-2020-3536 is a medium-severity cross-site scripting vulnerability in Cisco SD-WAN vManage, published on 8 Oct 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 Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface.

Weakness: CWE-79

Which versions are affected by CVE-2020-3536?

It affects 1 product.

Products include Cisco Sd-Wan.

How do I fix CVE-2020-3536?

No fix has been published for CVE-2020-3536 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-2020-3536 being exploited?

There is no known exploitation of CVE-2020-3536 in the wild and no public exploit code.

Sources

Also known as GHSA-gcjx-pff6-p887.