Brute-forceable user authentication in DFIR-IRIS IRIS 2.4.26

Successful exploitation can allow an unauthenticated remote attacker to perform unlimited or insufficiently constrained password guessing against valid accounts. If account credentials are weak or reused, this can result in unauthorized access to affected user accounts and exposure of the data and functionality available to those accounts. The issue also materially weakens the overall authentication security posture of the application by making credential attacks practical at scale.

If no vendor fix is available, deploy compensating controls in front of or around the application. Recommended measures include reverse-proxy or WAF-enforced rate limiting on authentication requests, detection and blocking of repeated failed login attempts by source and target account, temporary account lockout or step-up verification after repeated failures, mandatory MFA where available, and alerting on anomalous authentication patterns. Returning HTTP 429 responses when thresholds are exceeded and logging over-limit events are appropriate defensive measures.

Upgrade to a vendor-fixed release when one becomes available. The authentication flow should be modified to enforce robust brute-force protections, including context-aware rate limiting on login attempts, progressive backoff or delay after repeated failures, and account or session-level lockout thresholds where appropriate. Authentication endpoints should also generate appropriate error handling for excessive requests and support security monitoring of repeated failed login activity.