CWE-1231

Improper Prevention of Lock Bit Modification

The product uses a trusted lock bit for restricting access to registers, address regions, or other resources, but the product does not prevent the value of the lock bit from being modified after it has been set.

CVE-2022-42285 (GCVE-0-2022-42285)
Vulnerability from cvelistv5
Published
2023-01-13 01:48
Modified
2025-04-07 18:03
Severity ?
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CWE
Summary
DGX A100 SBIOS contains a vulnerability in the Pre-EFI Initialization (PEI)phase, where a privileged user can disable SPI flash protection, which may lead to denial of service, escalation of privileges, or data tampering.
References
Impacted products
Vendor Product Version
NVIDIA NVIDIA DGX servers Version: All SBIOS firmware versions prior to 1.18
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Mitigation

Phases: Architecture and Design, Implementation, Testing

Description:

  • Security lock bit protections must be reviewed for design inconsistency and common weaknesses.
  • Security lock programming flow and lock properties must be tested in pre-silicon and post-silicon testing.
CAPEC-680: Exploitation of Improperly Controlled Registers

An adversary exploits missing or incorrectly configured access control within registers to read/write data that is not meant to be obtained or modified by a user.

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