CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
AI Score
Confidence
High
EPSS
Percentile
5.1%
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.
Vendor | Product | Version | CPE |
---|---|---|---|
opensuse | opensuse | 12.2 | cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:* |
opensuse | opensuse | 12.3 | cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:* |
opensuse | opensuse | 13.1 | cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | * | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:*:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.1 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.1:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.2 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.2:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.3 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.3:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.4 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.4:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.5 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.5:*:*:*:*:*:*:* |
lightdm_gtk\+_greeter_project | lightdm_gtk\+_greeter | 1.1.6 | cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.6:*:*:*:*:*:*:* |
lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html
lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html
lists.opensuse.org/opensuse-updates/2014-01/msg00048.html
secunia.com/advisories/56211
secunia.com/advisories/56423
www.openwall.com/lists/oss-security/2014/01/07/15
www.securityfocus.com/bid/64679
bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
bugzilla.novell.com/show_bug.cgi?id=857303