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Time-of-check Time-of-use (TOCTOU) Race Condition

CVE-2023-20521

Low
3.3/10

Summary

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of service.

  • HIGH
  • PHYSICAL
  • NONE
  • CHANGED
  • NONE
  • HIGH
  • LOW
  • LOW

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

References

Advisory Timeline

  • Published