CVE-2024-5692 Security feature bypass in Firefox

Medium 6.5 Published Updated

Attackers can bypass file extension restrictions during Save As operations on Windows, potentially saving malicious files with disallowed extensions.

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-2024-5692?

CVE-2024-5692 is a medium-severity vulnerability in Mozilla Firefox, published on 11 Jun 2024. 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

On Windows 10, when using the 'Save As' functionality, an attacker could have tricked the browser into saving the file with a disallowed extension such as `.url` by including an invalid character in the extension. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Which versions are affected by CVE-2024-5692?

It affects 2 products.

Products include Mozilla Firefox, Mozilla Thunderbird.

How do I fix CVE-2024-5692?

Upgrade to a fixed version.

Is CVE-2024-5692 being exploited?

There is no known exploitation of CVE-2024-5692 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-pqfc-h2m7-5p9p.

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