CVE-2023-6211 Security feature bypass in Firefox
Attackers can bypass HTTPS-only mode in Firefox by tricking users into granting exceptions via social engineering, requiring user interaction.
- 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-2023-6211?
CVE-2023-6211 is a medium-severity vulnerability in Mozilla Firefox, published on 21 Nov 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
If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120.
Weakness: CWE-1021
Which versions are affected by CVE-2023-6211?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2023-6211?
Upgrade to a fixed version.
Is CVE-2023-6211 being exploited?
There is no known exploitation of CVE-2023-6211 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-mv6j-qcrj-q856, UBUNTU-CVE-2023-6211.