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Debian LTS: Security Advisory for xorg-server (DLA-2627-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'xorg-server' package(s) announced via the DLA-2627-1 advisory.
Insight
Insight
Jan-Niklas Sohn discovered that there was an input validation failure in the X.Org display server. Insufficient checks on the lengths of the XInput extension's ChangeFeedbackControl request could have lead to out of bounds memory accesses in the X server. These issues can lead to privilege escalation for authorised clients, particularly on systems where the X server is running as a privileged user.
Affected Software
Affected Software
'xorg-server' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 'Stretch', this problem has been fixed in version 2:1.19.2-1+deb9u8. We recommend that you upgrade your xorg-server packages.