TI-2014-00897 Aliases CVE-2014-0979 GHSA-3wgq-2r52-v65w

The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before…

LOW 11Published 2014-01-23 · Updated 2024-08-06

Key facts

Attack vector: Local
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.0041 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 17

CPE	Versions	Role	Vendor
cpe:2.3:o:opensuse:opensuse:12.2:::::::*	12.2	Vulnerable	openSUSE
cpe:2.3:o:opensuse:opensuse:12.3:::::::*	12.3	Vulnerable	openSUSE
cpe:2.3:o:opensuse:opensuse:13.1:::::::*	13.1	Vulnerable	openSUSE
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter::::::::	up to 1.7.0	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.1:::::::*	1.1.1	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.2:::::::*	1.1.2	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.3:::::::*	1.1.3	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.4:::::::*	1.1.4	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.5:::::::*	1.1.5	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.6:::::::*	1.1.6	Vulnerable	Lightdm Gtk+ Greeter Project

cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:* Versions 12.2 Vulnerable ·openSUSE
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:* Versions 12.3 Vulnerable ·openSUSE
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* Versions 13.1 Vulnerable ·openSUSE
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:*:*:*:*:*:*:*:* Versions up to 1.7.0 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.2:*:*:*:*:*:*:* Versions 1.1.2 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.3:*:*:*:*:*:*:* Versions 1.1.3 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.4:*:*:*:*:*:*:* Versions 1.1.4 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.5:*:*:*:*:*:*:* Versions 1.1.5 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.1.6:*:*:*:*:*:*:* Versions 1.1.6 Vulnerable ·Lightdm Gtk+ Greeter Project

Show 7 more CPE

CPE	Versions	Role	Vendor
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.3.0:::::::*	1.3.0	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.3.1:::::::*	1.3.1	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.0:::::::*	1.5.0	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.1:::::::*	1.5.1	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.2:::::::*	1.5.2	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.6.0:::::::*	1.6.0	Vulnerable	Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.6.1:::::::*	1.6.1	Vulnerable	Lightdm Gtk+ Greeter Project

cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.0:*:*:*:*:*:*:* Versions 1.5.0 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.1:*:*:*:*:*:*:* Versions 1.5.1 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.5.2:*:*:*:*:*:*:* Versions 1.5.2 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.6.0:*:*:*:*:*:*:* Versions 1.6.0 Vulnerable ·Lightdm Gtk+ Greeter Project
cpe:2.3:a:lightdm_gtk\+_greeter_project:lightdm_gtk\+_greeter:1.6.1:*:*:*:*:*:*:* Versions 1.6.1 Vulnerable ·Lightdm Gtk+ Greeter Project

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2014-0979
2026-10-03 Alias added: GHSA-3wgq-2r52-v65w

References

Advisory 3

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences