Kvm Qumranet KVM 83 access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9$0-$5k0.00

A vulnerability classified as problematic has been found in Kvm Qumranet KVM 83. Affected is an unknown code. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow 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.

The weakness was released 03/05/2010 by Paolo Bonzini as Bug 563463 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2010-0419 since 01/27/2010. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 44969 (CentOS 5 : kvm (CESA-2010:0126)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155678 (Oracle Enterprise Linux Update for KVM (ELSA-2010-0126)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (56662) and Tenable (44969). Entry connected to this vulnerability is available at 50658.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.9
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 44969
Nessus Name: CentOS 5 : kvm (CESA-2010:0126)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 840440
OpenVAS Name: Ubuntu Update for Linux kernel vulnerabilities USN-947-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/27/2010 🔍
03/01/2010 +33 days 🔍
03/01/2010 +0 days 🔍
03/01/2010 +0 days 🔍
03/05/2010 +4 days 🔍
03/05/2010 +0 days 🔍
03/09/2010 +4 days 🔍
03/18/2015 +1835 days 🔍
09/03/2021 +2360 days 🔍

Sourcesinfo

Advisory: Bug 563463
Researcher: Paolo Bonzini
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-0419 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 56662
SecurityTracker: 1023663 - KVM x86 Emulator Flaw Lets Local Users Gain Elevated Privileges on the Guest Operating System
Vulnerability Center: 24988 - Linux Kernel KVM 83 x86 Emulator SMP Configuration Local Privileges Escalation Vulnerability, Medium
SecurityFocus: 38467 - Linux Kernel KVM Segment Selector Loading Local Privilege Escalation Vulnerability

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 09/03/2021 00:40
Changes: 03/18/2015 15:15 (65), 02/21/2017 17:29 (15), 09/03/2021 00:40 (3)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!