CVE-2014-8100

xorg-x11-server: out of bounds access due to not validating length or offset values in Render extension

Severity Score

6.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Render extension in XFree86 4.0.1, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or possibly execute arbitrary code via a crafted length or index value to the (1) ProcRenderQueryVersion, (2) SProcRenderQueryVersion, (3) SProcRenderQueryPictFormats, (4) SProcRenderQueryPictIndexValues, (5) SProcRenderCreatePicture, (6) SProcRenderChangePicture, (7) SProcRenderSetPictureClipRectangles, (8) SProcRenderFreePicture, (9) SProcRenderComposite, (10) SProcRenderScale, (11) SProcRenderCreateGlyphSet, (12) SProcRenderReferenceGlyphSet, (13) SProcRenderFreeGlyphSet, (14) SProcRenderFreeGlyphs, or (15) SProcRenderCompositeGlyphs function.

La extensión Render en XFree86 4.0.1, X.Org X Window System (también conocido como X11 o X) X11R6.7, y X.Org Server (también conocido como xserver y xorg-server) anterior a 1.16.3 permite a usuarios remotos autenticados causar una denegación de servicio (lectura o escritura fuera de rango) o posiblemente ejecutar código arbitrario a través de un valor de longitud o de indice manipulado en la función (1) ProcRenderQueryVersion, (2) SProcRenderQueryVersion, (3) SProcRenderQueryPictFormats, (4) SProcRenderQueryPictIndexValues, (5) SProcRenderCreatePicture, (6) SProcRenderChangePicture, (7) SProcRenderSetPictureClipRectangles, (8) SProcRenderFreePicture, (9) SProcRenderComposite, (10) SProcRenderScale, (11) SProcRenderCreateGlyphSet, (12) SProcRenderReferenceGlyphSet, (13) SProcRenderFreeGlyphSet, (14) SProcRenderFreeGlyphs, o (15) SProcRenderCompositeGlyphs.

Multiple out-of-bounds access flaws were found in the way the X.Org server calculated memory requirements for certain requests. A malicious, authenticated client could use either of these flaws to crash the X.Org server.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

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
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125: Out-of-bounds Read

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.oracle.com/technetwork/topics/security/cpujul2015-2367936.html	X_refsource_confirm
http://www.securityfocus.com/bid/71602	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
https://security.gentoo.org/glsa/201504-06	2023-02-13
https://access.redhat.com/security/cve/CVE-2014-8100	2014-12-11
https://bugzilla.redhat.com/show_bug.cgi?id=1168711	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"		Xfree86 Search vendor "X.org" for product "Xfree86"				4.0.1 Search vendor "X.org" for product "Xfree86" and version "4.0.1"		-		Affected
X.org Search vendor "X.org"		Xorg-server Search vendor "X.org" for product "Xorg-server"				<= 1.16.2.99.901 Search vendor "X.org" for product "Xorg-server" and version " <= 1.16.2.99.901"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.7 Search vendor "X.org" for product "X11" and version "6.7"		-		Affected