CVE-2015-7835

Severity Score

7.2

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.

La función mod_l2_entry en arch/x86/mm.c en Xen 3.4 hasta la versión 4.6.x no valida correctamente las entradas de la tabla de paginación de nivel 2, lo que permite a administradores invitados PV locales obtener privilegios a través de un mapeo de superpage manipulado.

*Credits: N/A

CVSS Scores

NISTv2 7.2

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-10-14 CVE Reserved
2015-10-30 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (12)

URL	Tag	Source
http://support.citrix.com/article/CTX202404	X_refsource_confirm
http://www.securityfocus.com/bid/77366	Vdb Entry
http://www.securitytracker.com/id/1034032	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html	2018-10-30
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html	2018-10-30
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html	2018-10-30
http://lists.opensuse.org/opensuse-updates/2015-12/msg00053.html	2018-10-30
http://www.debian.org/security/2015/dsa-3390	2018-10-30
http://xenbits.xen.org/xsa/advisory-148.html	2018-10-30
https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-022-2015.txt	2018-10-30
https://security.gentoo.org/glsa/201604-03	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"				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"				4.3.2 Search vendor "Xen" for product "Xen" and version "4.3.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.3.4 Search vendor "Xen" for product "Xen" and version "4.3.4"		-		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"				4.4.1 Search vendor "Xen" for product "Xen" and version "4.4.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.0 Search vendor "Xen" for product "Xen" and version "4.5.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.1 Search vendor "Xen" for product "Xen" and version "4.5.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.6.0 Search vendor "Xen" for product "Xen" and version "4.6.0"		-		Affected