CVE-2009-1542
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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."
- CVSS 2.0
- 9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C
- EPSS
- 7.98% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- microsoft/virtual pc · microsoft/virtual server
- Source
- secure@microsoft.com
References
- http://secunia.com/advisories/35808
- http://www.securitytracker.com/id?1022544
- http://www.us-cert.gov/cas/techalerts/TA09-195A.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2009/1890
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166
- http://secunia.com/advisories/35808
- http://www.securitytracker.com/id?1022544
- http://www.us-cert.gov/cas/techalerts/TA09-195A.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2009/1890
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-033
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6166
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.