CVE-2018-20850 Cross-site scripting in n/a

High 8.2 Published 4 Jul 2019 Updated 5 Aug 2024

Self-XSS in the Stormshield Network Security web server CLI allows attackers to execute scripts in the context of the user interface.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-20850?

CVE-2018-20850 is a high-severity cross-site scripting vulnerability in n/a, published on 4 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Stormshield Network Security 2.0.0 through 2.13.0 and 3.0.0 through 3.7.1 has self-XSS in the command line interface of the SNS web server.

Weakness: CWE-79

Which versions are affected by CVE-2018-20850?

It affects 1 product.

Products include Stormshield Stormshield Network Security.

How do I fix CVE-2018-20850?

No fix has been published for CVE-2018-20850 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-2018-20850 being exploited?

There is no known exploitation of CVE-2018-20850 in the wild and no public exploit code.

Sources

Also known as GHSA-h6h8-9v43-9426.