Vulnerability Name:

CVE-2014-0979 (CCN-90142)

Assigned:2014-01-07
Published:2014-01-07
Updated:2018-10-30
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.
Per: http://cwe.mitre.org/data/definitions/476.html

"CWE-476: NULL Pointer Dereference"
CVSS v3 Severity:5.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
1.6 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
3.4 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-Other
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2014-0979

Source: FEDORA
Type: UNKNOWN
FEDORA-2014-1647

Source: FEDORA
Type: UNKNOWN
FEDORA-2014-1648

Source: SUSE
Type: UNKNOWN
openSUSE-SU-2014:0071

Source: CCN
Type: oss-security: Tue, 7 Jan 2014
CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference

Source: CCN
Type: SA56211
LightDM GTK+ Greeter NULL Pointer Dereference Denial of Service Vulnerability

Source: SECUNIA
Type: Vendor Advisory
56211

Source: SECUNIA
Type: Vendor Advisory
56423

Source: CCN
Type: LightDM Web site
LightDM

Source: MLIST
Type: UNKNOWN
[oss-security] 20140107 Re: CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference

Source: BID
Type: UNKNOWN
64679

Source: CCN
Type: BID-64679
LightDM GTK+ Greeter Local Denial of Service Vulnerability

Source: CONFIRM
Type: UNKNOWN
https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.novell.com/show_bug.cgi?id=857303

Source: XF
Type: UNKNOWN
lightdm-cve20140979-dos(90142)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2014-0979

Vulnerable Configuration:Configuration 1:
  • cpe:/o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
  • OR cpe:/o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
  • OR cpe:/o:opensuse:opensuse:13.1:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.2:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.3:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.4:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.5:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.1.6:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.3.1:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.5.1:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.5.2:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.6.0:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:1.6.1:*:*:*:*:*:*:*
  • OR cpe:/a:lightdm_gtk+_greeter_project:lightdm_gtk+_greeter:*:*:*:*:*:*:*:* (Version <= 1.7.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20140979
    V
    		CVE-2014-0979
    2017-03-01
    oval:com.ubuntu.xenial:def:201409790000000
    V
    		CVE-2014-0979 on Ubuntu 16.04 LTS (xenial) - medium.
    2014-01-23
    oval:com.ubuntu.precise:def:20140979000
    V
    		CVE-2014-0979 on Ubuntu 12.04 LTS (precise) - medium.
    2014-01-22
    oval:com.ubuntu.trusty:def:20140979000
    V
    		CVE-2014-0979 on Ubuntu 14.04 LTS (trusty) - medium.
    2014-01-22
    oval:com.ubuntu.xenial:def:20140979000
    V
    		CVE-2014-0979 on Ubuntu 16.04 LTS (xenial) - medium.
    2014-01-22
    BACK
    opensuse opensuse 12.2
    opensuse opensuse 12.3
    opensuse opensuse 13.1
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.1
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.2
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.3
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.4
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.5
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.1.6
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.3.0
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.3.1
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.5.0
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.5.1
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.5.2
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.6.0
    lightdm_gtk+_greeter_project lightdm gtk+ greeter 1.6.1
    lightdm_gtk+_greeter_project lightdm gtk+ greeter *