CVE-2024-8383 Security feature bypass in Firefox

What is CVE-2024-8383?

CVE-2024-8383 is a high-severity vulnerability in Mozilla Firefox, published on 3 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Firefox normally asks for confirmation before asking the operating system to find an application to handle a scheme that the browser does not support. It did not ask before doing so for the Usenet-related schemes news: and snews:. Since most operating systems don't have a trusted newsreader installed by default, an unscrupulous program that the user downloaded could register itself as a handler. The website that served the application download could then launch that application at will. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.

Weakness: CWE-1188

Which versions are affected by CVE-2024-8383?

It affects 2 products.

Products include Mozilla Firefox, Mozilla Firefox Esr.

How do I fix CVE-2024-8383?

Upgrade to a fixed version.

Is CVE-2024-8383 being exploited?

There is no known exploitation of CVE-2024-8383 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2024-8383, GHSA-794f-5gfq-xmmq, UBUNTU-CVE-2024-8383.