CVE-2010-2938

kernel: guest crashes on non-EPT machines may crash the host as well

Severity Score

4.9

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure (VMCS) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5, when an Intel platform without Extended Page Tables (EPT) functionality is used, accesses VMCS fields without verifying hardware support for these fields, which allows local users to cause a denial of service (host OS crash) by requesting a VMCS dump for a fully virtualized Xen guest.

El fichero arch/x86/hvm/vmx/vmcs.c en la implementación de la estructura de control de máquina virtual (VMCS) en el kernel de Linux v2.6.18 de Linux en Red Hat Enterprise Linux (RHEL) 5, cuando se usa una plataforma de Intel sin la funcionalidad de Tabla de páginas extendida(EPT), tiene acceso a los campos VMCS sin verificar el soporte de hardware para estos campos, lo que permite a usuarios locales causar una denegación de servicio (caida del sistema operativo) pidiendo un dump de VMCS para un huésped Xen totalmente virtualizado.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2010-08-04 CVE Reserved
2010-10-08 CVE Published
2023-03-08 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (9)

URL	Tag	Source
http://secunia.com/advisories/46397	Third Party Advisory
http://support.avaya.com/css/P8/documents/100113326	X_refsource_confirm
http://www.securityfocus.com/archive/1/520102/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/43578	Vdb Entry
http://www.vmware.com/security/advisories/VMSA-2011-0012.html	X_refsource_confirm
http://xenbits.xensource.com/xen-unstable.hg?rev/15911	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.redhat.com/support/errata/RHSA-2010-0723.html	2018-10-10
https://bugzilla.redhat.com/show_bug.cgi?id=620490	2010-09-29
https://access.redhat.com/security/cve/CVE-2010-2938	2010-09-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	5 Search vendor "Redhat" for product "Enterprise Linux" and version "5"	-	Safe