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Microsoft BitLocker Password Disclosure Security Issue

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Release Date:  2008-09-01    Last Update:  2008-09-04    Views:  8,652

Secunia Advisory SA31619

Where:

Local system

Impact:

Exposure of sensitive information

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


A security issue has been reported in Microsoft BitLocker, which can be exploited by malicious, local users to disclose sensitive information.

The security issue is caused due to the BIOS keyboard buffer not being properly flushed when pre-boot authentication is used and can be exploited to disclose the used password.

Successful exploitation requires that BitLocker is configured to use a TPM chip.

The security issue is reported in Microsoft BitLocker included Windows Vista without Service Pack 1.


Solution:
The security issue is reportedly fixed in Windows Vista Service Pack 1.

Provided and/or discovered by:
Jonathan Brossard, iViZ Techno Solutions

Original Advisory:
http://www.ivizsecurity.com/security-advisory-iviz-sr-0801.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft BitLocker Password Disclosure Security Issue

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