UBUNTU-CVE-2014-0979

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Source
https://ubuntu.com/security/CVE-2014-0979
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-0979.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2014-0979
Upstream
Withdrawn
2025-07-18T16:42:59Z
Published
2014-01-23T01:55:00Z
Modified
2025-07-16T08:10:55.212058Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

The startauthentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdmgreetergetauthentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.

References

Affected packages

Ubuntu:14.04:LTS / lightdm-gtk-greeter

Package

Name
lightdm-gtk-greeter
Purl
pkg:deb/ubuntu/lightdm-gtk-greeter@1.8.4-0ubuntu1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.4-0ubuntu1

Affected versions

1.*

1.6.1-0ubuntu1
1.6.1-0ubuntu2
1.6.1-0ubuntu3
1.8.1-1ubuntu1
1.8.1-1ubuntu2
1.8.2-1ubuntu1
1.8.3-0ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.8.4-0ubuntu1",
            "binary_name": "lightdm-gtk-greeter"
        }
    ]
}