CVE-2018-6198 Path traversal in n/a
A local attacker can exploit improper temporary file handling to overwrite arbitrary files via symlink attacks when the configuration directory is unwritable.
- 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-2018-6198?
CVE-2018-6198 is a medium-severity path traversal vulnerability in Canonical Ubuntu Linux, published on 25 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
w3m through 0.5.3 does not properly handle temporary files when the ~/.w3m directory is unwritable, which allows a local attacker to craft a symlink attack to overwrite arbitrary files.
Weakness: CWE-59
Which versions are affected by CVE-2018-6198?
It affects 2 products.
Products include Canonical Ubuntu Linux, Tats W3m.
How do I fix CVE-2018-6198?
Apply the vendor's patch.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2018-6198 being exploited?
There is no known exploitation of CVE-2018-6198 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2018-6198, DEBIAN-CVE-2018-6198, GHSA-gvrg-2xvq-7j38, UBUNTU-CVE-2018-6198.