DSA-4783-1 sddm -- security update

Debian Security Advisory

DSA-4783-1 sddm -- security update

Date Reported:

05 Nov 2020

Affected Packages:

sddm

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 973748.
In Mitre's CVE dictionary: CVE-2020-28049.

More information:

Fabian Vogt discovered a flaw in sddm, a modern display manager for X11. A local attacker can take advantage of a race condition when creating the Xauthority file to escalate privileges.

For the stable distribution (buster), this problem has been fixed in version 0.18.0-1+deb10u1.

We recommend that you upgrade your sddm packages.

For the detailed security status of sddm please refer to its security tracker page at: https://security-tracker.debian.org/tracker/sddm