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
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.