National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2008-3896 Detail

Description

Grub Legacy 0.97 and earlier stores pre-boot authentication passwords in the BIOS Keyboard buffer and does not clear this buffer before and after use, which allows local users to obtain sensitive information by reading the physical memory locations associated with this buffer.

Source:  MITRE      Last Modified:  09/03/2008

Quick Info

CVE Dictionary Entry:
CVE-2008-3896
Original release date:
09/03/2008
Last revised:
01/29/2009
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
2.1 LOW
Vector:
(AV:L/AC:L/Au:N/C:P/I:N/A:N) (legend)
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

Vendor Statements (disclaimer)

Official Statement from Red Hat (01/01/1900)

Red Hat does not consider this to be a security issue. Since these operations can only be executed by root, no trust boundary is crossed as a result of this behaviour.

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://securityreason.com/securityalert/4204 External Source SREASON 4204
http://securityreason.com/securityalert/4206 External Source SREASON 4206
http://www.ivizsecurity.com/preboot-patch.html External Source MISC http://www.ivizsecurity.com/preboot-patch.html
http://www.ivizsecurity.com/research/preboot/preboot_whitepaper.pdf External Source MISC http://www.ivizsecurity.com/research/preboot/preboot_whitepaper.pdf
http://www.securityfocus.com/archive/1/archive/1/495726/100/0/threaded External Source BUGTRAQ 20080825 [IVIZ-08-009] Grub Legacy Security Model bypass exploiting wrong BIOS API usage

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History 1 change record found - show changes