CVE-2016-5253 Path traversal in n/a
Local attackers can write to arbitrary files via hard links in the Firefox Updater, potentially leading to privilege escalation or 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-2016-5253?
CVE-2016-5253 is a medium-severity path traversal vulnerability in Mozilla Firefox, published on 5 Aug 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Updater in Mozilla Firefox before 48.0 on Windows allows local users to write to arbitrary files via vectors involving the callback application-path parameter and a hard link.
Weakness: CWE-264
Which versions are affected by CVE-2016-5253?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2016-5253?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2016-5253 being exploited?
There is no known exploitation of CVE-2016-5253 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-rw7w-hjmw-gj5r.