CVE-2010-0306

kvm: emulator privilege escalation IOPL/CPL level check

Severity Score

4.1

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.

El emulador x86 en KVM3, cuando un invitado está configurado para Symmetric Multiprocessing (SMP), no usa Current Privilege Level (CPL) e I/O Privilege Level (IOPL) para restringir las instrucciones de ejecución, lo que permite a usuarios invitados del OS provocar una denegación de servicio (caída o cuelgue del sistema) o elevar sus privilegios aprovechando el acceso al (1) puerto IO o (2) a la región MMIO, y sustituyendo una instrucción entre la entrada del emulador y el analizador de instrucciones. Cuestión relacionada con CVE-2010-0298.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2010-01-12 CVE Reserved
2010-02-12 CVE Published
2023-03-08 EPSS Updated
2024-08-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/38158	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10953	Signature

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://secunia.com/advisories/38492	2017-09-19
http://secunia.com/advisories/38499	2017-09-19
http://www.debian.org/security/2010/dsa-1996	2017-09-19
https://bugzilla.redhat.com/show_bug.cgi?id=560654	2010-02-09
https://rhn.redhat.com/errata/RHSA-2010-0088.html	2017-09-19
https://rhn.redhat.com/errata/RHSA-2010-0095.html	2017-09-19
https://access.redhat.com/security/cve/CVE-2010-0306	2010-02-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Kvm Qumranet Search vendor "Kvm Qumranet"		Kvm Search vendor "Kvm Qumranet" for product "Kvm"				83 Search vendor "Kvm Qumranet" for product "Kvm" and version "83"		-		Affected