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Advisories

OpenEMR 7.0.1 before 8.4.0 OneTimeAuth Token Replay and PIN Brute Force

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Severity
critical
Date
Affecting

  • openemr >= 7.0.1, < 8.4.0

CWE
  • CWE-307 Improper Restriction of Excessive Authentication Attempts
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Nora-Qiu, CyberKareem
Description
OpenEMR from 7.0.1 before 8.4.0 contains a flaw in src/Common/Auth/OneTimeAuth.php that ignores the enforce_onetime_use and max_access_count flags, never revokes consumed service_auth tokens, and checks login_pin without rate limiting or strict comparison. Attackers holding a captured token can replay it or brute-force the PIN to open patient-portal sessions exposing PHI.

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