CVE-2020-5781 Cross-site scripting in IgniteNet HeliOS GLinq

Medium 4.3 Published 23 Sep 2020 Updated 4 Aug 2024

Stored XSS in IgniteNet HeliOS GLinq allows attackers to cause denial of service for other users via the langSelection parameter.

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-2020-5781?

CVE-2020-5781 is a medium-severity cross-site scripting vulnerability in IgniteNet HeliOS GLinq, published on 23 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In IgniteNet HeliOS GLinq v2.2.1 r2961, the langSelection parameter is stored in the luci configuration file (/etc/config/luci) by the authenticator.htmlauth function. When modified with arbitrary javascript, this causes a denial-of-service condition for all other users.

Weakness: CWE-79

Which versions are affected by CVE-2020-5781?

It affects 1 product.

Products include Ignitenet Helios Glinq.

How do I fix CVE-2020-5781?

No fix has been published for CVE-2020-5781 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-2020-5781 being exploited?

There is no known exploitation of CVE-2020-5781 in the wild and no public exploit code.

Sources

Also known as GHSA-r536-4rjh-7q6r.