CVE-2023-6871 Security feature bypass in Firefox
Firefox failed to warn users when navigating to new protocol handlers, allowing potential security bypasses. Users should upgrade to the latest version.
- 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-2023-6871?
CVE-2023-6871 is a medium-severity vulnerability in Mozilla Firefox, published on 19 Dec 2023. 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
Under certain conditions, Firefox did not display a warning when a user attempted to navigate to a new protocol handler. This vulnerability affects Firefox < 121.
Which versions are affected by CVE-2023-6871?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2023-6871?
Upgrade to a fixed version.
Is CVE-2023-6871 being exploited?
There is no known exploitation of CVE-2023-6871 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-43mg-g32w-94qf, UBUNTU-CVE-2023-6871.