Microsoft Windows Server 2008 Hyper-V VMBus resource management

CVSS Meta Temp Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Windows Server 2008. Affected by this vulnerability is an unknown functionality of the component Hyper-V VMBus. The manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2011-1872. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Windows Server 2008 (Operating System). This issue affects some unknown processing of the component Hyper-V VMBus. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

Hyper-V in Microsoft Windows Server 2008 Gold, SP2, R2, and R2 SP1 allows guest OS users to cause a denial of service (host OS infinite loop) via malformed machine instructions in a VMBus packet, aka "VMBus Persistent DoS Vulnerability."

The weakness was disclosed 06/14/2011 by Nicolas Economou with Core Security Technologies as MS11-047 (Website). It is possible to read the advisory at coresecurity.com. The identification of this vulnerability is CVE-2011-1872 since 05/04/2011. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Core Security in ANSI C and been published immediately after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 55127 (MS11-047: Vulnerability in Hyper-V Could Allow Denial of Service (2525835)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90714 (Microsoft Hyper-V Denial of Service Vulnerability (MS11-047)).

Upgrading eliminates this vulnerability. Applying the patch MS11-047 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (67731), Exploit-DB (17401), Tenable (55127), SecurityFocus (BID 48179†) and Secunia (SA44908†). The entry VDB-4228 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Core Security
Programming Language: 🔍
Download: 🔍

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55127
Nessus Name: MS11-047: Vulnerability in Hyper-V Could Allow Denial of Service (2525835)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Exploit Delay Time: 🔍

Patch: MS11-047

Timelineinfo

05/04/2011 🔍
06/14/2011 +41 days 🔍
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06/14/2011 +0 days 🔍
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06/14/2011 +0 days 🔍
06/15/2011 +1 days 🔍
06/15/2011 +0 days 🔍
06/16/2011 +1 days 🔍
06/20/2011 +4 days 🔍
01/13/2025 +4955 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS11-047
Researcher: Nicolas Economou
Organization: Core Security Technologies
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1872 (🔍)
GCVE (CVE): GCVE-0-2011-1872
GCVE (VulDB): GCVE-100-4367

OVAL: 🔍
IAVM: 🔍

X-Force: 67731
SecurityFocus: 48179 - Microsoft Hyper-V VMBus CVE-2011-1872 Denial of Service Vulnerability
Secunia: 44908 - Microsoft Windows Hyper-V VMBus Denial of Service Vulnerability, Less Critical
SecurityTracker: 1025644 - Microsoft Hyper-V VMBus Packet Validation Flaw Lets Local Users Deny Service
Vulnerability Center: 31779 - [MS11-047] Microsoft Hyper-V on Windows Server 2008 Local Denial of Service Vulnerability, Medium

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 06/20/2011 02:00
Updated: 01/13/2025 00:12
Changes: 06/20/2011 02:00 (83), 04/07/2017 12:38 (18), 03/19/2021 11:21 (2), 01/13/2025 00:12 (16)
Complete: 🔍
Cache ID: 216::103

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