CVE-2016-1579 UDM doesn't check for confinement before running post-processing commands
Confined applications can bypass security restrictions to execute arbitrary commands as the phablet user via the Ubuntu Download Manager API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2016-1579?
CVE-2016-1579 is a medium-severity vulnerability in Ubuntu Download Manager, published on 22 Apr 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
UDM provides support for running commands after a download is completed, this is currently made use of for click package installation. This functionality was not restricted to unconfined applications. Before UDM version 1.2+16.04.20160408-0ubuntu1 any confined application could make use of the UDM C++ API to run arbitrary commands in an unconfined environment as the phablet user.
Weakness: CWE-264
Which versions are affected by CVE-2016-1579?
It affects 1 product.
Products include Canonical Ubuntu Download Manager.
How do I fix CVE-2016-1579?
Apply the vendor's patch.
Is CVE-2016-1579 being exploited?
There is no known exploitation of CVE-2016-1579 in the wild and no public exploit code.
Sources
Also known as GHSA-gvpc-fhpp-hm84, UBUNTU-CVE-2016-1579.