CVE-2021-3710 Apport info disclosure via path traversal bug in read_file
An attacker can exploit a path traversal flaw in the apport read_file function to disclose sensitive information on Ubuntu systems.
- 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-2021-3710?
CVE-2021-3710 is a medium-severity path traversal vulnerability in Canonical apport, published on 1 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;
Which versions are affected by CVE-2021-3710?
It affects 1 product.
Products include Canonical Apport.
How do I fix CVE-2021-3710?
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-2021-3710 being exploited?
There is no known exploitation of CVE-2021-3710 in the wild and no public exploit code.
Other vulnerabilities in Canonical apport
Sources
Also known as GHSA-f7hq-m55j-5752, UBUNTU-CVE-2021-3710.