Constant-time-defeating optimisations in hmac.compare_digest vulnerability

Constant-time-defeating optimisations in hmac.compare_digest vulnerability

CVE-2022-48566 · MEDIUM Severity

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.

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