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Observable Discrepancy

CVE-2021-46744

Medium
6.5/10

Summary

An attacker with access to a malicious hypervisor may be able to infer data values used in a SEV guest on AMD CPUs by monitoring ciphertext values over time.

  • LOW
  • LOCAL
  • NONE
  • CHANGED
  • NONE
  • LOW
  • HIGH
  • NONE

CWE-203 - Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References

Advisory Timeline

  • Published