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Observable Discrepancy

CVE-2020-36421

Severity Medium
Score 5.3/10

Summary

An issue was discovered in Arm Mbed TLS through 2.16.6 and 2.17.0 through 2.22.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • LOW
  • 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.

Advisory Timeline

  • Published