CVE-2010-4255

xen: 64-bit PV xen guest can crash host by accessing hypervisor per-domain memory area

Severity Score

8.6

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

La función fixup_page_fault en arch/x86/traps.c en Xen v.4.0.1 y anteriores sobre plataformas 64-bit, cuando se activa la paravirtualización, no verifica que el modo kernel está usado para llamar a la función handle_gdt_ldt_mapping_fault, lo que permite a los usuarios invitados del sistema operativo provocar una denegación de servicio (host OS BUG_ON) a través de un acceso de memoria manipulado.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2010-11-16 CVE Reserved
2011-01-25 CVE Published
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (10)

URL	Tag	Source
http://secunia.com/advisories/42884	Third Party Advisory
http://secunia.com/advisories/46397	Third Party Advisory
http://www.securityfocus.com/archive/1/520102/100/0/threaded	Mailing List
http://www.vmware.com/security/advisories/VMSA-2011-0012.html	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html	2018-10-10
http://openwall.com/lists/oss-security/2010/11/30/5	2018-10-10
http://openwall.com/lists/oss-security/2010/11/30/8	2018-10-10
https://bugzilla.redhat.com/show_bug.cgi?id=658155	2011-01-13

URL	Date	SRC
http://www.redhat.com/support/errata/RHSA-2011-0017.html	2018-10-10
https://access.redhat.com/security/cve/CVE-2010-4255	2011-01-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				<= 4.0.1 Search vendor "Citrix" for product "Xen" and version " <= 4.0.1"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.0.2 Search vendor "Citrix" for product "Xen" and version "3.0.2"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.0.3 Search vendor "Citrix" for product "Xen" and version "3.0.3"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.0.4 Search vendor "Citrix" for product "Xen" and version "3.0.4"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.1.2 Search vendor "Citrix" for product "Xen" and version "3.1.2"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.1.3 Search vendor "Citrix" for product "Xen" and version "3.1.3"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.1.4 Search vendor "Citrix" for product "Xen" and version "3.1.4"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.2.0 Search vendor "Citrix" for product "Xen" and version "3.2.0"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.2.1 Search vendor "Citrix" for product "Xen" and version "3.2.1"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.2.2 Search vendor "Citrix" for product "Xen" and version "3.2.2"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.2.3 Search vendor "Citrix" for product "Xen" and version "3.2.3"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.3.0 Search vendor "Citrix" for product "Xen" and version "3.3.0"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.3.1 Search vendor "Citrix" for product "Xen" and version "3.3.1"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.3.2 Search vendor "Citrix" for product "Xen" and version "3.3.2"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.4.0 Search vendor "Citrix" for product "Xen" and version "3.4.0"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.4.1 Search vendor "Citrix" for product "Xen" and version "3.4.1"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.4.2 Search vendor "Citrix" for product "Xen" and version "3.4.2"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				3.4.3 Search vendor "Citrix" for product "Xen" and version "3.4.3"		-		Affected
Citrix Search vendor "Citrix"		Xen Search vendor "Citrix" for product "Xen"				4.0.0 Search vendor "Citrix" for product "Xen" and version "4.0.0"		-		Affected