{"id":"DEBIAN-CVE-2014-0979","details":"The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.","modified":"2026-09-01T20:03:20.623816359Z","published":"2014-01-23T01:55:04.460Z","upstream":["CVE-2014-0979"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2014-0979"}],"affected":[{"package":{"name":"lightdm-gtk-greeter","ecosystem":"Debian:12","purl":"pkg:deb/debian/lightdm-gtk-greeter?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-5"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0979.json"}},{"package":{"name":"lightdm-gtk-greeter","ecosystem":"Debian:13","purl":"pkg:deb/debian/lightdm-gtk-greeter?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-5"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0979.json"}},{"package":{"name":"lightdm-gtk-greeter","ecosystem":"Debian:14","purl":"pkg:deb/debian/lightdm-gtk-greeter?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-5"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0979.json"}}],"schema_version":"1.9.0"}