Technical Description

Multiple vulnerabilities have been identified in various VMware products, which could be exploited by attackers to bypass security restrictions, cause a denial of service or potentially execute arbitrary code.

The first issue is caused by an error in the virtual machine process (VMX) that reads state information from an incorrect memory location when returning from a sleep state (S2) to the run state (S0), which could be exploited by attackers to create a denial of service condition.

The second vulnerability is caused by an error in the virtual machine process (VMX) when storing configuration information in VMware system files, which could be exploited by attackers to cause a denial of service on the guest operating system.

The third issue is caused by an error when handling certain general protection faults (GPFs) in Windows guest operating systems, which could be exploited by attackers to crash a Windows virtual machine or potentially execute arbitrary code.

The fourth vulnerability is caused by a memory corruption error when debugging local programs executed on 64-bit Windows systems, which could be exploited to cause a denial of service or potentially execute arbitrary code.

The fifth issue is caused by an input validation error in the "Shared Folders" feature, which could be exploited by attackers to read or write arbitrary content on the host system.

The sixth vulnerability is caused by an unspecified error which could allow a malicious user to make plaintext additions to the encrypted preferences file by overwriting the file while VMware Player is running.

Affected Products

VMware Workstation versions prior to 5.5.4 Build 44386
VMware Server versions prior to 1.0.3 Build 44356
VMware ACE versions prior to 1.0.3 Build 44385
VMware Player versions prior to 1.0.4 Build 44386

Solution

Upgrade to VMware Workstation 5.5.4 Build 44386 :
http://www.vmware.com/download/ws

Upgrade to VMware Server 1.0.3 Build 44356 :
http://www.vmware.com/download/server/

Upgrade to VMware ACE 1.0.3 Build 44385 :
http://www.vmware.com/download/ace

Upgrade to VMware Player 1.0.4 Build 44386 :
http://www.vmware.com/download/player

References

http://www.vupen.com/english/advisories/2007/1592
http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
http://www.vmware.com/support/ace/doc/releasenotes_ace.html
http://www.vmware.com/support/player/doc/releasenotes_player.html
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=521

Credits

Vulnerabilities reported by Tavis Ormandy (Google), Sungard Ixsecurity, Ruben Santamarta (Reversemode), Ken Johnson and Greg MacManus (iDefense Labs).

ChangeLog

2007-04-30 : Initial release

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