Description
gnome-screensaver 2.28.x before 2.28.3 does not properly synchronize the state of screen locking and the unlock dialog in situations involving a change to the number of monitors, which allows physically proximate attackers to bypass screen locking and access an unattended workstation by connecting and disconnecting monitors multiple times, a related issue to CVE-2010-0414.
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.redhat.com/show_bug.cgi?id=564464
- https://bugzilla.gnome.org/show_bug.cgi?id=609789
- [oss-security] 20100212 Re: gnome-screensaver vulnerability (CVE-2010-0414) mailing-list
- http://ftp.gnome.org/pub/GNOME/sources/gnome-screensaver/2.28/gnome-screensaver-2.28.3.news
- gnome-screensaver-monitor-sec-bypass(56364) vdb-entry
- FEDORA-2010-1855 vendor-advisory
- 38565 third-party-advisory
- http://git.gnome.org/browse/gnome-screensaver/commit/?id=d4dcbd65a2df3c093c4e3a74bbbc75383eb9eadb
- 38583 third-party-advisory
- http://git.gnome.org/browse/gnome-screensaver/commit/?id=271ae93d7b140b8ba40d77f9e4ce894e5fd1b554
- 38248 vdb-entry
- http://git.gnome.org/browse/gnome-screensaver/commit/?id=f93a22c175090cf02e80bc3ee676b53f1251f685