CVE-2018-14345 Auth bypass in n/a
Attackers with D-Bus access can unlock graphical sessions without passwords if ReuseSession is enabled, leading to unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-14345?
CVE-2018-14345 is a high-severity authentication bypass vulnerability in n/a, published on 17 Jul 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.
Which versions are affected by CVE-2018-14345?
It affects 1 product.
Products include Sddm Project Sddm.
How do I fix CVE-2018-14345?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-14345 being exploited?
There is no known exploitation of CVE-2018-14345 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2018-14345, GHSA-4wvx-qq9g-8hh9, UBUNTU-CVE-2018-14345.