LILO 22.6.1 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.
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 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.
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20080825 [IVIZ-08-008] LILO Security Model bypass exploiting wrong BIOS API usage