CVE-2014-0979

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

La función start_authentication en lightdm-gtk-greeter.c de LightDM GTK+ Greeter anterior a la versión 1.7.1 no maneja adecuadamente el valor desde la función lightdm_greeter_get_authentication_user, lo que permite a usuarios locales provocar una denegación de servicio (dereferencia a puntero nulo) a través de un nombre de usuario vacío.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-01-07 CVE Reserved
2014-01-23 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2014/01/07/15	Mailing List
http://www.securityfocus.com/bid/64679	Vdb Entry
https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449	X_refsource_confirm
https://bugzilla.novell.com/show_bug.cgi?id=857303	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html	2018-10-30
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html	2018-10-30
http://secunia.com/advisories/56211	2018-10-30
http://secunia.com/advisories/56423	2018-10-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.2 Search vendor "Opensuse" for product "Opensuse" and version "12.2"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				12.3 Search vendor "Opensuse" for product "Opensuse" and version "12.3"		-		Affected
Opensuse Search vendor "Opensuse"		Opensuse Search vendor "Opensuse" for product "Opensuse"				13.1 Search vendor "Opensuse" for product "Opensuse" and version "13.1"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				<= 1.7.0 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version " <= 1.7.0"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.1 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.1"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.2 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.2"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.3 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.3"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.4 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.4"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.5 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.5"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.1.6 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.1.6"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.3.0 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.3.0"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.3.1 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.3.1"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.5.0 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.5.0"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.5.1 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.5.1"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.5.2 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.5.2"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.6.0 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.6.0"		-		Affected
Lightdm Gtk\+ Greeter Project Search vendor "Lightdm Gtk\+ Greeter Project"		Lightdm Gtk\+ Greeter Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter"				1.6.1 Search vendor "Lightdm Gtk\+ Greeter Project" for product "Lightdm Gtk\+ Greeter" and version "1.6.1"		-		Affected