CVE-2014-8091

xorg-x11-server: denial of service due to unchecked malloc in client authentication

Severity Score

4.3

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

X.Org X Window System (aka X11 and X) X11R5 and X.Org Server (aka xserver and xorg-server) before 1.16.3, when using SUN-DES-1 (Secure RPC) authentication credentials, does not check the return value of a malloc call, which allows remote attackers to cause a denial of service (NULL pointer dereference and server crash) via a crafted connection request.

X.Org X Window System (también conocido como X11 and X) X11R5 y X.Org Server (también conocido como xserver y xorg-server) anterior a 1.16.3, cuando utiliza las credenciales de autenticación SUN-DES-1 (Secure RPC), no compreuba el valor de retorno de una llamada malloc, lo que permite a atacantes remotos causar una denegación de servicio (referencia a puntero nulo y caída de servidor) a través de una solicitud de conexión manipulada.

It was found that the X.Org server did not properly handle SUN-DES-1 (Secure RPC) authentication credentials. A malicious, unauthenticated client could use this flaw to crash the X.Org server by submitting a specially crafted authentication request.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-10-10 CVE Reserved
2014-12-09 CVE Published
2024-07-22 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-252: Unchecked Return Value

CAPEC

References (13)

URL	Tag	Source
http://advisories.mageia.org/MGASA-2014-0532.html	X_refsource_confirm
http://secunia.com/advisories/61947	Third Party Advisory
http://secunia.com/advisories/62292	Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html	X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html	X_refsource_confirm
http://www.securityfocus.com/bid/71597	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://www.x.org/wiki/Development/Security/Advisory-2014-12-09	2023-02-13

URL	Date	SRC
http://www.debian.org/security/2014/dsa-3095	2023-02-13
http://www.mandriva.com/security/advisories?name=MDVSA-2015:119	2023-02-13
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html	2023-02-13
https://security.gentoo.org/glsa/201504-06	2023-02-13
https://access.redhat.com/security/cve/CVE-2014-8091	2014-12-11
https://bugzilla.redhat.com/show_bug.cgi?id=1168680	2014-12-11

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
X.org Search vendor "X.org"		Xorg-server Search vendor "X.org" for product "Xorg-server"				<= 1.16.2 Search vendor "X.org" for product "Xorg-server" and version " <= 1.16.2"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				5.0 Search vendor "X.org" for product "X11" and version "5.0"		-		Affected