CWE-1258

Exposure of Sensitive System Information Due to Uncleared Debug Information
AI Translation Available

The hardware does not fully clear security-sensitive values, such as keys and intermediate values in cryptographic operations, when debug mode is entered.

Status
draft
Abstraction
base

Security sensitive values, keys, intermediate steps of cryptographic operations, etc. are stored in temporary registers in the hardware. If these values are not cleared when debug mode is entered they may be accessed by a debugger allowing sensitive information to be accessible by untrusted parties.

Common Consequences

confidentiality access control
Impacts
read memory bypass protection mechanism

Potential Mitigations

Phases:
architecture and design
Descriptions:
• Whenever debug mode is enabled, all registers containing sensitive assets must be cleared.