CVE-2021-3567

NameCVE-2021-3567
DescriptionA flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs980061

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
caribou (PTS)jessie0.4.15-1vulnerable
stretch (security), stretch (lts), stretch0.4.21-1+deb9u1fixed
buster0.4.21-7fixed
bullseye0.4.21-7.1fixed
bookworm0.4.21-8fixed
sid, trixie0.4.21-9fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
caribousourcejessie(unfixed)end-of-life
caribousourcestretch(not affected)
caribousourcebuster(not affected)
caribousource(unstable)0.4.21-7.1980061

Notes

[buster] - caribou <not-affected> (Security impact only with cinnamon-screensaver >= 4.2)
[stretch] - caribou <not-affected> (Security impact only with cinnamon-screensaver >= 4.2)
https://bugs.launchpad.net/ubuntu/+source/caribou/+bug/1912060
https://gitlab.gnome.org/GNOME/caribou/-/merge_requests/3
https://gitlab.gnome.org/GNOME/caribou/-/commit/d41c8e44b12222a290eaca16703406b113a630c6

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