CVE-2020-27349 aptdaemon performed policykit permissions checks too late
Aptdaemon allowed privilege escalation by interacting with untrusted files before performing PolicyKit authorization checks.
- 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-2020-27349?
CVE-2020-27349 is a medium-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 9 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Aptdaemon performed policykit checks after interacting with potentially untrusted files with elevated privileges. This affected versions prior to 1.1.1+bzr982-0ubuntu34.1, 1.1.1+bzr982-0ubuntu32.3, 1.1.1+bzr982-0ubuntu19.5, 1.1.1+bzr982-0ubuntu14.5.
Weakness: CWE-862
Which versions are affected by CVE-2020-27349?
It affects 1 product.
Products include Canonical Ubuntu Linux.
How do I fix CVE-2020-27349?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-27349 being exploited?
There is no known exploitation of CVE-2020-27349 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-qxjq-5hf8-7hff, UBUNTU-CVE-2020-27349.