CVE-2024-3859 Integer overflow in Firefox
Integer overflows in 32-bit Firefox and Thunderbird allow out-of-bounds reads via malformed OpenType fonts, potentially causing crashes or data exposure.
- 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-2024-3859?
CVE-2024-3859 is a medium-severity vulnerability in Debian Debian Linux, 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
On 32-bit versions there were integer-overflows that led to an out-of-bounds-read that potentially could be triggered by a malformed OpenType font. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.
Which versions are affected by CVE-2024-3859?
It affects 3 products.
Products include Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird.
How do I fix CVE-2024-3859?
Upgrade to a fixed version.
Is CVE-2024-3859 being exploited?
There is no known exploitation of CVE-2024-3859 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2024-3859, GHSA-6f82-r7wj-8fxf, UBUNTU-CVE-2024-3859.