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Debian Security Advisory DSA 4270-1 (gdm3 - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Chris Coulson discovered a use-after-free flaw in the GNOME Display Manager, triggerable by an unprivileged user via a specially crafted sequence of D-Bus method calls, leading to denial of service or potentially the execution of arbitrary code.
Affected Software
Affected Software
gdm3 on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (stretch), this problem has been fixed in version 3.22.3-3+deb9u2. We recommend that you upgrade your gdm3 packages. For the detailed security status of gdm3 please refer to its security tracker page linked in the references.