KB968537

UpdatesDescription: This security update resolves two publicly disclosed and two privately reported vulnerabilities in the Windows kernel that could allow elevation of privilege. An attacker who successfully exploited any of these vulnerabilities could execute arbitrary code and take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have valid logon credentials and be able to log on locally to exploit these vulnerabilities. The vulnerabilities could not be exploited remotely or by anonymous users. The security update addresses these vulnerabilities by correcting the methods used for validating a change in specific kernel objects, for validating the input passed from user mode to the kernel, and for validating the argument passed to the system call.

Update type: Important

Release date: June 9, 2009

Applies to: All versions

Knowledge base: http://support.microsoft.com/kb/968537

Download link: 32-bit | 64-bit

Comments:Here are the specifics on the vulnerabilities covered by this update:

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