CVE-2024-4770 Use after free in Firefox
A use-after-free flaw in Firefox and Thunderbird during PDF saving can cause a crash, requiring users to upgrade to patched versions.
- 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-2024-4770?
CVE-2024-4770 is a high-severity use after free vulnerability in Mozilla Firefox, published on 14 May 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
When saving a page to PDF, certain font styles could have led to a potential use-after-free crash. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.
Weakness: CWE-416
Which versions are affected by CVE-2024-4770?
It affects 2 products.
Products include Mozilla Firefox, Mozilla Thunderbird.
How do I fix CVE-2024-4770?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-4770 being exploited?
There is no known exploitation of CVE-2024-4770 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2024-4770, GHSA-7ggp-cp85-r5cg, UBUNTU-CVE-2024-4770.