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Insufficient Granularity of Access Control

CVE-2021-46747

High
7.1/10

Summary

Insufficient granularity of access control in ASP (AMD Secure Processor) may allow an attacker with an untrusted user space application to map sensitive SMN (System Management Network) apertures leading to a potential escalation of privileges.

  • HIGH
  • LOCAL
  • NONE
  • HIGH

CWE-1220 - Insufficient Granularity of Access Control

The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets.

References

Advisory Timeline

  • Published