CVE-2024-5699 Security feature bypass in Firefox
Firefox ignored cookie prefixes due to case sensitivity, allowing attackers to bypass security protections associated with those prefixes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-5699?
CVE-2024-5699 is a critical vulnerability in Mozilla Firefox, published on 11 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-178
Which versions are affected by CVE-2024-5699?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2024-5699?
Upgrade to a fixed version.
Is CVE-2024-5699 being exploited?
There is no known exploitation of CVE-2024-5699 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-893r-mpwj-qhhg, UBUNTU-CVE-2024-5699.