CVE-2022-22738 Memory corruption in Firefox
A heap-buffer-overflow in Firefox and Thunderbird allows attackers to execute arbitrary code or cause a crash via crafted CSS filters.
- 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-2022-22738?
CVE-2022-22738 is a high-severity memory corruption 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
Applying a CSS filter effect could have accessed out of bounds memory. This could have lead to a heap-buffer-overflow causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
Weakness: CWE-787
Which versions are affected by CVE-2022-22738?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.
How do I fix CVE-2022-22738?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-22738 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-22738 exists.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2022-22738, GHSA-rr3f-gjw6-5522, UBUNTU-CVE-2022-22738.