CVE-2022-22761 Security feature bypass in Firefox
Attackers can bypass frame-ancestors CSP restrictions on web-accessible extension pages in Firefox and Thunderbird, potentially enabling clickjacking or UI redressing attacks.
- 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-2022-22761?
CVE-2022-22761 is a high-severity 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
Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
Weakness: CWE-693
Which versions are affected by CVE-2022-22761?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.
How do I fix CVE-2022-22761?
Upgrade to a fixed version.
Is CVE-2022-22761 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-22761 exists.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2022-22761, GHSA-443j-8jp8-4xch, UBUNTU-CVE-2022-22761.