CVE-2017-5427 Race condition in Firefox
A local attacker can exploit a race condition during Firefox startup to load malicious files, resulting in arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-5427?
CVE-2017-5427 is a medium-severity vulnerability in Mozilla Firefox, published on 11 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A non-existent chrome.manifest file will attempt to be loaded during startup from the primary installation directory. If a malicious user with local access puts chrome.manifest and other referenced files in this directory, they will be loaded and activated during startup. This could result in malicious software being added without consent or modification of referenced installed files. This vulnerability affects Firefox < 52.
Weakness: CWE-362
Which versions are affected by CVE-2017-5427?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2017-5427?
Upgrade to a fixed version.
Is CVE-2017-5427 being exploited?
There is no known exploitation of CVE-2017-5427 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-g22c-72wp-3974, UBUNTU-CVE-2017-5427.