CVE-2012-4210 Code injection in n/a
Remote attackers can execute arbitrary JavaScript with chrome privileges via crafted stylesheets in Firefox Style Inspector, requiring user interaction.
- 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
- Available
What is CVE-2012-4210?
CVE-2012-4210 is a critical code injection vulnerability in Mozilla Firefox, published on 21 Nov 2012. 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
The Style Inspector in Mozilla Firefox before 17.0 and Firefox ESR 10.x before 10.0.11 does not properly restrict the context of HTML markup and Cascading Style Sheets (CSS) token sequences, which allows user-assisted remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted stylesheet.
Weakness: CWE-264
Which versions are affected by CVE-2012-4210?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2012-4210?
Upgrade to a fixed version.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2012-4210 being exploited?
There is no known exploitation of CVE-2012-4210 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-vghf-6629-65jw.