CVE-2011-2670 Cross-site scripting in Firefox

Medium 6.1 Published 13 Jan 2020 Updated 6 Aug 2024

Attackers can execute arbitrary scripts in the context of the user's browser via malicious CSS rendering in older Firefox versions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2011-2670?

CVE-2011-2670 is a medium-severity cross-site scripting vulnerability in Mozilla Firefox, published on 13 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Mozilla Firefox before 3.6 is vulnerable to XSS via the rendering of Cascading Style Sheets

Weakness: CWE-79

Which versions are affected by CVE-2011-2670?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2011-2670?

No fix has been published for CVE-2011-2670 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-2011-2670 being exploited?

There is no known exploitation of CVE-2011-2670 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-wg6h-56g7-mfvv.