GLSA-200804-12 : gnome-screensaver: Privilege escalation
Medium Nessus Plugin ID 31959
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200804-12 (gnome-screensaver: Privilege escalation)
gnome-screensaver incorrectly handles the results of the getpwuid() function in the file src/setuid.c when using directory servers (like NIS) during a network outage, a similar issue to GLSA 200705-14.
A local user can crash gnome-xscreensaver by preventing network connectivity if the system uses a remote directory service for credentials such as NIS or LDAP, which will unlock the screen.
There is no known workaround at this time.
SolutionAll gnome-screensaver users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=gnome-extra/gnome-screensaver-2.20.0-r3'