CVE-2014-7155

Severity Score

5.8

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.

La función x86_emulate en arch/x86/x86_emulate/x86_emulate.c en Xen 4.4.x y anteriores no comprueba debidamente los permisos del modo de supervisor, lo que permite a usuarios locales de HVM causar una denegación de servicio (caída del huésped) o ganar privilegios del medo del kernel del huésped a través de vectores que involucran una instrucción (1) HLT, (2) LGDT, (3) LIDT, o (4) LMSW.

*Credits: N/A

CVSS Scores

NISTv2 5.8

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-09-24 CVE Reserved
2014-10-01 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (12)

URL	Tag	Source
http://secunia.com/advisories/61858	Third Party Advisory
http://secunia.com/advisories/61890	Third Party Advisory
http://support.citrix.com/article/CTX200218	Third Party Advisory
http://www.securityfocus.com/bid/70057	Third Party Advisory
http://www.securitytracker.com/id/1030888	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://xenbits.xen.org/xsa/advisory-105.html	2018-10-30

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html	2018-10-30
http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html	2018-10-30
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html	2018-10-30
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html	2018-10-30
http://security.gentoo.org/glsa/glsa-201412-42.xml	2018-10-30
http://www.debian.org/security/2014/dsa-3041	2018-10-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				<= 4.4.0 Search vendor "Xen" for product "Xen" and version " <= 4.4.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.0.2 Search vendor "Xen" for product "Xen" and version "3.0.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.0.3 Search vendor "Xen" for product "Xen" and version "3.0.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.0.4 Search vendor "Xen" for product "Xen" and version "3.0.4"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.1.3 Search vendor "Xen" for product "Xen" and version "3.1.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.1.4 Search vendor "Xen" for product "Xen" and version "3.1.4"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.2.0 Search vendor "Xen" for product "Xen" and version "3.2.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.2.1 Search vendor "Xen" for product "Xen" and version "3.2.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.2.2 Search vendor "Xen" for product "Xen" and version "3.2.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.2.3 Search vendor "Xen" for product "Xen" and version "3.2.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.3.0 Search vendor "Xen" for product "Xen" and version "3.3.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.3.1 Search vendor "Xen" for product "Xen" and version "3.3.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.3.2 Search vendor "Xen" for product "Xen" and version "3.3.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.4.0 Search vendor "Xen" for product "Xen" and version "3.4.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.4.1 Search vendor "Xen" for product "Xen" and version "3.4.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.4.2 Search vendor "Xen" for product "Xen" and version "3.4.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.4.3 Search vendor "Xen" for product "Xen" and version "3.4.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				3.4.4 Search vendor "Xen" for product "Xen" and version "3.4.4"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.0.0 Search vendor "Xen" for product "Xen" and version "4.0.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.0.1 Search vendor "Xen" for product "Xen" and version "4.0.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.0.2 Search vendor "Xen" for product "Xen" and version "4.0.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.0.3 Search vendor "Xen" for product "Xen" and version "4.0.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.0.4 Search vendor "Xen" for product "Xen" and version "4.0.4"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.0 Search vendor "Xen" for product "Xen" and version "4.1.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.1 Search vendor "Xen" for product "Xen" and version "4.1.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.2 Search vendor "Xen" for product "Xen" and version "4.1.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.3 Search vendor "Xen" for product "Xen" and version "4.1.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.4 Search vendor "Xen" for product "Xen" and version "4.1.4"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.5 Search vendor "Xen" for product "Xen" and version "4.1.5"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.1.6.1 Search vendor "Xen" for product "Xen" and version "4.1.6.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.2.0 Search vendor "Xen" for product "Xen" and version "4.2.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.2.1 Search vendor "Xen" for product "Xen" and version "4.2.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.2.2 Search vendor "Xen" for product "Xen" and version "4.2.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.2.3 Search vendor "Xen" for product "Xen" and version "4.2.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.3.0 Search vendor "Xen" for product "Xen" and version "4.3.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.3.1 Search vendor "Xen" for product "Xen" and version "4.3.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.4.0 Search vendor "Xen" for product "Xen" and version "4.4.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.4.0 Search vendor "Xen" for product "Xen" and version "4.4.0"		rc1		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
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				19 Search vendor "Fedoraproject" for product "Fedora" and version "19"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				20 Search vendor "Fedoraproject" for product "Fedora" and version "20"		-		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