CVE-2024-5699: firefox — Exploit & Fix

Description

In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the browser not correctly honoring the behaviors specified by the prefix. This vulnerability affects Firefox < 127.

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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-178 CWE-178

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 127.0

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2024-25/ https://www.mozilla.org/security/advisories/mfsa2024-25/

Exploits

https://bugzilla.mozilla.org/show_bug.cgi?id=1891349 https://bugzilla.mozilla.org/show_bug.cgi?id=1891349

Frequently Asked Questions

What is CVE-2024-5699? +

In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the browser not correctly honoring the behaviors specified by the prefix. This vulnerability affects Firefox < 127. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-5699? +

CVE-2024-5699 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-5699? +

CVE-2024-5699 affects products from mozilla, specifically: firefox. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-5699? +

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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