CVE-2023-25729 Security feature bypass in Firefox
Extensions bypass permission prompts to open external schemes, enabling malicious actions like file downloads or system interaction without user consent.
- 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-2023-25729?
CVE-2023-25729 is a high-severity vulnerability in Mozilla Firefox, published on 2 Jun 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
Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Weakness: CWE-863
Which versions are affected by CVE-2023-25729?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.
How do I fix CVE-2023-25729?
Upgrade to a fixed version.
Is CVE-2023-25729 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-25729 exists.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2023-25729, GHSA-vhjv-4vf6-mc9x, UBUNTU-CVE-2023-25729.