CVE-2013-7439

libX11: buffer overflow in MakeBigReq macro

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote attackers to have unspecified impact via a crafted request, which triggers a buffer overflow.

Múltiples errores de superación de límite (off-by-one) en los macros (1) MakeBigReq y (2) SetReqLen en include/X11/Xlibint.h en X11R6.x y libX11 anterior a 1.6.0 permiten a atacantes remotos tener un impacto no especificado a través de una solicitud manipulada, lo que provoca un desbordamiento de buffer.

Abhishek Arya discovered that libX11 incorrectly handled memory in the MakeBigReq macro. A remote attacker could use this issue to cause applications to crash, resulting in a denial of service, or possibly execute arbitrary code. In addition, following the macro fix in libx11, a number of other packages have also been rebuilt as security updates including libxrender, libxext, libxi, libxfixes, libxrandr, libsdl1.2, libxv, libxp, and xserver-xorg-video-vmware. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Adjacent

Attack Complexity

High

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-04-09 CVE Reserved
2015-04-14 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-189: Numeric Errors

CAPEC

References (9)

URL	Tag	Source
http://seclists.org/oss-sec/2015/q2/81	Mailing List
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html	X_refsource_confirm
http://www.securityfocus.com/bid/73962	Third Party Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=56508	Issue Tracking

URL	Date	SRC

URL	Date	SRC
http://lists.x.org/archives/xorg-announce/2015-April/002561.html	2016-10-18

URL	Date	SRC
http://www.debian.org/security/2015/dsa-3224	2016-10-18
http://www.ubuntu.com/usn/USN-2568-1	2016-10-18
https://access.redhat.com/security/cve/CVE-2013-7439	2014-10-13
https://bugzilla.redhat.com/show_bug.cgi?id=1209943	2014-10-13

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"		Libx11 Search vendor "X.org" for product "Libx11"				1.0.1 Search vendor "X.org" for product "Libx11" and version "1.0.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.0.2 Search vendor "X.org" for product "Libx11" and version "1.0.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.0.3 Search vendor "X.org" for product "Libx11" and version "1.0.3"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1 Search vendor "X.org" for product "Libx11" and version "1.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1 Search vendor "X.org" for product "Libx11" and version "1.1"		rc1		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1 Search vendor "X.org" for product "Libx11" and version "1.1"		rc2		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1.4 Search vendor "X.org" for product "Libx11" and version "1.1.4"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1.5 Search vendor "X.org" for product "Libx11" and version "1.1.5"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1.6 Search vendor "X.org" for product "Libx11" and version "1.1.6"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1.99.1 Search vendor "X.org" for product "Libx11" and version "1.1.99.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.1.99.2 Search vendor "X.org" for product "Libx11" and version "1.1.99.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.2 Search vendor "X.org" for product "Libx11" and version "1.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.2.1 Search vendor "X.org" for product "Libx11" and version "1.2.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.2.2 Search vendor "X.org" for product "Libx11" and version "1.2.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3 Search vendor "X.org" for product "Libx11" and version "1.3"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.1 Search vendor "X.org" for product "Libx11" and version "1.3.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.2 Search vendor "X.org" for product "Libx11" and version "1.3.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.3 Search vendor "X.org" for product "Libx11" and version "1.3.3"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.4 Search vendor "X.org" for product "Libx11" and version "1.3.4"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.5 Search vendor "X.org" for product "Libx11" and version "1.3.5"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.6 Search vendor "X.org" for product "Libx11" and version "1.3.6"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.99.901 Search vendor "X.org" for product "Libx11" and version "1.3.99.901"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.99.902 Search vendor "X.org" for product "Libx11" and version "1.3.99.902"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.3.99.903 Search vendor "X.org" for product "Libx11" and version "1.3.99.903"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.0 Search vendor "X.org" for product "Libx11" and version "1.4.0"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.1 Search vendor "X.org" for product "Libx11" and version "1.4.1"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.2 Search vendor "X.org" for product "Libx11" and version "1.4.2"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.3 Search vendor "X.org" for product "Libx11" and version "1.4.3"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.4 Search vendor "X.org" for product "Libx11" and version "1.4.4"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.99.901 Search vendor "X.org" for product "Libx11" and version "1.4.99.901"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.4.99.902 Search vendor "X.org" for product "Libx11" and version "1.4.99.902"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.5.0 Search vendor "X.org" for product "Libx11" and version "1.5.0"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.5.99.901 Search vendor "X.org" for product "Libx11" and version "1.5.99.901"		-		Affected
X.org Search vendor "X.org"		Libx11 Search vendor "X.org" for product "Libx11"				1.5.99.902 Search vendor "X.org" for product "Libx11" and version "1.5.99.902"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.0 Search vendor "X.org" for product "X11" and version "6.0"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.1 Search vendor "X.org" for product "X11" and version "6.1"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.3 Search vendor "X.org" for product "X11" and version "6.3"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.4 Search vendor "X.org" for product "X11" and version "6.4"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.5.1 Search vendor "X.org" for product "X11" and version "6.5.1"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.6 Search vendor "X.org" for product "X11" and version "6.6"		-		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
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.8.0 Search vendor "X.org" for product "X11" and version "6.8.0"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.8.1 Search vendor "X.org" for product "X11" and version "6.8.1"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.8.2 Search vendor "X.org" for product "X11" and version "6.8.2"		-		Affected
X.org Search vendor "X.org"		X11 Search vendor "X.org" for product "X11"				6.9 Search vendor "X.org" for product "X11" and version "6.9"		-		Affected