CVE-2024-3859

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1874489 issue tracking
https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html third party advisory mailing list
https://www.mozilla.org/security/advisories/mfsa2024-18/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2024-19/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2024-20/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-3859?
CVE-2024-3859 has been scored as a medium severity vulnerability.
How to fix CVE-2024-3859?
To fix CVE-2024-3859, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-3859 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-3859 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-3859?
CVE-2024-3859 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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