CVE-2014-0979
LOW · CVSS 2.1EPSS 0.4%EU EUVD
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.
Key facts
- CVSS score
- 2.1 (v2.0)
- Severity
- LOW
- CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 0.4% (35th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2014-1009)
- Published
- January 23, 2014
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2014-1009 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- lightdm gtk+ greeter project / lightdm gtk+ greeter
- opensuse / opensuse
- opensuse / opensuse
- opensuse / opensuse
References
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html
- http://secunia.com/advisories/56211(Vendor Advisory)
- http://secunia.com/advisories/56423(Vendor Advisory)
- http://www.openwall.com/lists/oss-security/2014/01/07/15
- http://www.securityfocus.com/bid/64679
- https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
- https://bugzilla.novell.com/show_bug.cgi?id=857303
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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