Description
gnome-screensaver 2.14.3, 2.22.2, 2.27.x, 2.28.0, and 2.28.3, when the X configuration enables the extend screen option, allows physically proximate attackers to bypass screen locking, access an unattended workstation, and view half of the GNOME desktop by attaching an external monitor.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | gnome-screensaver | 2.28.3-1 | — |
| Debian 12 | gnome-screensaver | 2.28.3-1 | — |
References
- https://bugzilla.gnome.org/show_bug.cgi?id=593616
- https://bugzilla.redhat.com/show_bug.cgi?id=557525
- http://git.gnome.org/browse/gnome-screensaver/commit/?id=2f597ea9f1f363277fd4dfc109fa41bbc6225aca
- http://security-tracker.debian.org/tracker/CVE-2010-0285
- screensaver-monitor-setup-sec-bypass(56366) vdb-entry
- MDVSA-2011:093 vendor-advisory
- 38254 vdb-entry