CVE-2023-5727 Security feature bypass in Firefox
Firefox failed to warn users when downloading executable MSIX files, potentially allowing attackers to trick users into running malicious code.
- 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-2023-5727?
CVE-2023-5727 is a medium-severity vulnerability in Mozilla Firefox, published on 24 Oct 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
The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle files, which can run commands on a user's computer. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
Which versions are affected by CVE-2023-5727?
It affects 3 products.
Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.
How do I fix CVE-2023-5727?
Upgrade to a fixed version.
Is CVE-2023-5727 being exploited?
There is no known exploitation of CVE-2023-5727 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-5c37-6j7c-hr7x, UBUNTU-CVE-2023-5727.