CVE-2022-46873 Cross-site scripting in Firefox
An attacker can inject executable script into pages protected by Content Security Policy due to missing unsafe-hashes directive support in Firefox.
- 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-2022-46873?
CVE-2022-46873 is a high-severity cross-site scripting vulnerability in Mozilla Firefox, published on 22 Dec 2022. 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
Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an attacker who was able to inject markup into a page otherwise protected by a Content Security Policy may have been able to inject executable script. This would be severely constrained by the specified Content Security Policy of the document. This vulnerability affects Firefox < 108.
Weakness: CWE-74
Which versions are affected by CVE-2022-46873?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2022-46873?
Upgrade to a fixed version.
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-2022-46873 being exploited?
There is no known exploitation of CVE-2022-46873 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-p5f8-m753-hvgf, UBUNTU-CVE-2022-46873.