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Last updated: 5/29/2016 5:39:52 AM

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Vulnerability Summary for CVE-2014-0979

Original release date: 01/22/2014
Last revised: 02/21/2014


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.


Per: http://cwe.mitre.org/data/definitions/476.html "CWE-476: NULL Pointer Dereference"


CVSS Severity (version 2.0):
CVSS v2 Base Score: 2.1 LOW
Impact Subscore: 2.9
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

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External Source: SUSE
Name: openSUSE-SU-2014:0071
External Source: FEDORA
Name: FEDORA-2014-1648
External Source: CONFIRM
Name: https://bugzilla.novell.com/show_bug.cgi?id=857303
External Source: MLIST
Name: [oss-security] 20140107 Re: CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference
External Source: FEDORA
Name: FEDORA-2014-1647
External Source: CONFIRM
Name: https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
External Source: BID
Name: 64679

Technical Details

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