Microsoft Windows Vista privilege escalation vulnerability

Overview

Microsoft Windows Vista contains a local privilege escalation vulnerability.

Description

The Windows Advanced Local Procedure Call (ALPC) does not properly evaluate certain conditions in legacy reply paths.

Per Microsoft Security Bulletin MS07-066:
An elevation of privilege vulnerability exists in the way that the Windows kernel processes certain access requests. This vulnerability could allow an attacker to run code and to take complete control of the system. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
Note that this vulnerability is present in the 32 and 64-bit versions of Windows Vista.

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Impact

A local attacker may be able to gain elevated privileges.

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Solution

Update
Microsoft has released an update to address this issue. Administrators and users should see Microsoft Security Bulletin MS07-066 for information about obtaining fixed software.

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Vendor Information

601073

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Updated: December 11, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

See <http://www.microsoft.com/technet/security/bulletin/ms07-066.mspx&gt; for more information.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23601073 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

<http://www.microsoft.com/technet/security/bulletin/ms07-066.mspx&gt;

Acknowledgements

Microsoft credits Thomas Garnier of SkyRecon for reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

CVE IDs:	CVE-2007-5350
Severity Metric:	6.35 Date Public: