CVE-2024-3854 Memory corruption in Firefox
A JIT compiler flaw in Firefox and Thunderbird allows out-of-bounds reads, potentially leading to code execution or crashes.
- 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-2024-3854?
CVE-2024-3854 is a high-severity memory corruption vulnerability in Mozilla Firefox, published on 16 Apr 2024. 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
In some code patterns the JIT incorrectly optimized switch statements and generated code with out-of-bounds-reads. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.
Weakness: CWE-125
Which versions are affected by CVE-2024-3854?
It affects 2 products.
Products include Mozilla Firefox, Mozilla Thunderbird.
How do I fix CVE-2024-3854?
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-2024-3854 being exploited?
There is no known exploitation of CVE-2024-3854 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2024-3854, GHSA-xc66-q4x2-cwqx, UBUNTU-CVE-2024-3854.