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VMWare Workstation vstor-ws60.sys Denial of Service
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Secunia Advisory:
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SA26606
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Release Date:
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2007-08-28
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Last Update:
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2007-09-03
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Popularity:
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5,983 views
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Critical:
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Not critical
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Impact:
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DoS
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Where:
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Local system
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Solution Status:
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Unpatched
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| Software: | VMware Workstation 6.x
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| CVE reference: | CVE-2007-4591
CVE-2007-4593
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Description:
seppi has reported a vulnerability in VMWare Workstation, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
The vulnerability is caused due to the improper validation of userspace parameters within the "FsSetVolumeInformation" IOCTL handler in vstor-ws60.sys. This can be exploited to crash the vulnerable system by sending a "FsSetVolumeInformation" IOCTL with a subcode equal to "FsSetFileInformation", containing an invalid, small size for the file buffer (1024 bytes under the actual size).
The vulnerability is reported in version 6.0. Other versions may also be affected.
NOTE: A crash is confirmed in the "vstor2-ws60.sys" driver from VMWare Workstation version 6.0 while performing standard "DC2" tests.
Solution:
Restrict access to trusted users only.
Provided and/or discovered by:
seppi
Changelog:
2007-09-03: Added CVE reference.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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