National Cyber-Alert System
Vulnerability Summary for CVE-2008-3894
Original release date:09/03/2008
Last revised:01/29/2009
Source:
US-CERT/NIST
Overview
IBM Lenovo firmware 7CETB5WW 2.05 stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer after use, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information
- Official Statement from Lenovo (11/05/2008)
-
Lenovo has released a BIOS update to address this issue.
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-64580
References to Advisories, Solutions, and Tools
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External Source: BUGTRAQ
Name: 20080825 [IVIZ-08-005] IBM Lenovo BIOS Plain Text Password Disclosure
External Source: MISC
Name: http://www.ivizsecurity.com/research/preboot/preboot_whitepaper.pdf
External Source: MISC
Name: http://www.ivizsecurity.com/preboot-patch.html
External Source: SREASON
Name: 4207