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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade lightdm-gtk-greeter | Jul 30, 2024 | Jan 23, 2014 |
| Suse | — | Upgrade lightdm-gtk-greeter-langUpgrade lightdm-gtk-greeterUpgrade lightdm-gtk-greeter-branding-upstreamUpgrade lightdm-gtk-greeter-debuginfoUpgrade lightdm-gtk-greeter-debugsource | Dec 18, 2015 | Jan 15, 2014 |
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