CVE-2024-3857: firefox Use-After-Free — Fix

Description

The JIT created incorrect code for arguments in certain cases. This led to potential use-after-free crashes during garbage collection. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 115.10
mozilla	firefox	< 125.0
mozilla	thunderbird	< 115.10
debian	debian_linux	All

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2024-18/ https://www.mozilla.org/security/advisories/mfsa2024-19/ https://www.mozilla.org/security/advisories/mfsa2024-20/ https://www.mozilla.org/security/advisories/mfsa2024-18/ https://www.mozilla.org/security/advisories/mfsa2024-19/ https://www.mozilla.org/security/advisories/mfsa2024-20/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1886683 https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html https://bugzilla.mozilla.org/show_bug.cgi?id=1886683 https://lists.debian.org/debian-lts-announce/2024/04/msg00012.html https://lists.debian.org/debian-lts-announce/2024/04/msg00013.html

Frequently Asked Questions

What is CVE-2024-3857? +

The JIT created incorrect code for arguments in certain cases. This led to potential use-after-free crashes during garbage collection. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-3857? +

CVE-2024-3857 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-3857? +

CVE-2024-3857 affects products from debian, mozilla, specifically: debian_linux, firefox, thunderbird. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-3857? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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