Microsoft Virtual Server 2005 access control

CVSS Meta Temp Score
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CTI Interest Score
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8.3$5k-$25k0.00

Summaryinfo

A vulnerability was found in Microsoft Virtual Server 2005. It has been classified as critical. This impacts an unknown function. Performing a manipulation results in access control. This vulnerability is reported as CVE-2009-1542. No exploit exists.

Detailsinfo

A vulnerability was found in Microsoft Virtual Server 2005. It has been classified as critical. This affects an unknown code block. 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. The summary by CVE is:

The Virtual Machine Monitor (VMM) in Microsoft Virtual PC 2004 SP1, 2007, and 2007 SP1, and Microsoft Virtual Server 2005 R2 SP1, does not enforce CPU privilege-level requirements for all machine instructions, which allows guest OS users to execute arbitrary kernel-mode code and gain privileges within the guest OS via a crafted application, aka "Virtual PC and Virtual Server Privileged Instruction Decoding Vulnerability."

The weakness was disclosed 07/15/2009 by Tavis Ormandy with Google (Website). It is possible to read the advisory at us-cert.gov. This vulnerability is uniquely identified as CVE-2009-1542 since 05/05/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. The requirement for exploitation is a authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/13/2025). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 39795 (MS09-033: Vulnerability in Virtual PC and Virtual Server Could Allow Elevation of Privilege (969856)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116509 (Microsoft Virtual PC and Virtual Server Elevation of Privilege Vulnerability (MS09-033)).

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 (51465), Tenable (39795), SecurityFocus (BID 35601†), Secunia (SA35808†) and SecurityTracker (ID 1022544†). The entries VDB-49046, VDB-49045, VDB-49044 and VDB-49197 are 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: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.3

VulDB Base Score: 8.8
VulDB Temp Score: 8.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 39795
Nessus Name: MS09-033: Vulnerability in Virtual PC and Virtual Server Could Allow Elevation of Privilege (969856)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 900690
OpenVAS Name: Microsoft Virtual PC/Server Privilege Escalation Vulnerability (969856)
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

05/05/2009 🔍
07/14/2009 +70 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/14/2009 +0 days 🔍
07/15/2009 +1 days 🔍
07/15/2009 +0 days 🔍
07/15/2009 +0 days 🔍
03/17/2015 +2071 days 🔍
04/13/2025 +3680 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: us-cert.gov
Researcher: Tavis Ormandy
Organization: Google
Status: Confirmed

CVE: CVE-2009-1542 (🔍)
GCVE (CVE): GCVE-0-2009-1542
GCVE (VulDB): GCVE-100-49047

OVAL: 🔍

X-Force: 51465
SecurityFocus: 35601 - Microsoft Virtual PC and Virtual Server Privilege Escalation Vulnerability
Secunia: 35808 - Microsoft Virtual PC / Virtual Server Privilege Escalation Vulnerability, Less Critical
SecurityTracker: 1022544 - Microsoft Virtual PC/Server Lets Local Users Gain Elevated Privileges Within a Guest Operating System
Vulnerability Center: 22873 - [MS09-033] Microsoft Virtual PC and Virtual Server Local Privilege Escalation Vulnerability, Medium
Vupen: ADV-2009-1890

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 04/13/2025 20:52
Changes: 03/17/2015 23:38 (61), 02/11/2017 10:40 (18), 08/12/2021 14:25 (3), 04/13/2025 20:52 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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