MGASA-2014-0026

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    MGASA-2014-0026

    Published: 24 Jan 2014Last Modified: 16 Apr 2026
    Upstream:
    CVE-2014-0979

    Summary: Updated lightdm-gtk-greeter fixes CVE-2014-0979

    Details: Updated lightdm-gtk-greeter package fixes security vulnerability: lightdm-gtk-greeter uses the lightdm-gobject API incorrectly and does not handle lightdm_greeter_get_authentication_user() returning NULL when the username of the previous authentication is invalid resulting in a NULL pointer dereference in start_authentication(). This constitutes a local denial of service which can be triggered by any unprivileged attacker requiring the intervention of an administrator to restart lightdm (CVE-2014-0979).

    References: https://advisories.mageia.org/MGASA-2014-0026.html, http://openwall.com/lists/oss-security/2014/01/07/5, http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html, https://bugs.mageia.org/show_bug.cgi?id=12238

    Affected packages

    Package

    Name: lightdm-gtk-greeter

    Purl: pkg:rpm/mageia/lightdm-gtk-greeter?arch=source&distro=mageia-3

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.3.1-6.1.mga3

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    MGASA-2014-0026 | CVE-DB