CVE-2018-20681

NameCVE-2018-20681
Descriptionmate-screensaver before 1.20.2 in MATE Desktop Environment allows physically proximate attackers to view screen content and possibly control applications. By unplugging and re-plugging or power-cycling external output devices (such as additionally attached graphical outputs via HDMI, VGA, DVI, etc.) the content of a screensaver-locked session can be revealed. In some scenarios, the attacker can execute applications, such as by clicking with a mouse.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mate-screensaver (PTS)bullseye1.24.1-1fixed
bookworm1.26.1-1+deb12u1fixed
sid, trixie1.26.2-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mate-screensaversourcejessie(not affected)
mate-screensaversource(unstable)1.20.2-1low

Notes

[stretch] - mate-screensaver <no-dsa> (Minor issue)
[jessie] - mate-screensaver <not-affected> (Vulnerability only manifests when built against GTK-3.22)
https://github.com/mate-desktop/mate-screensaver/issues/152
https://github.com/mate-desktop/mate-screensaver/issues/155
https://github.com/mate-desktop/mate-screensaver/issues/170
https://github.com/mate-desktop/mate-screensaver/pull/167

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