Authentication Bypass in IBM i via Service-Name Matching

Executive Summary

This vulnerability in IBM i 7.6, 7.5, 7.4, and 7.3 allows a remote authenticated attacker to bypass security restrictions. The issue occurs due to improper authentication during service-name matching, which could let an attacker gain unauthorized access or perform actions beyond their intended permissions.

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Detection Guidance

This vulnerability involves improper authentication during service-name matching in IBM i systems. Detection requires checking for misconfigured service authentication settings and verifying service-name matching logic. Review IBM i system logs for authentication failures related to service access and validate service configurations against IBM's security guidelines.

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Impact Analysis

If exploited, this vulnerability could allow attackers to bypass security controls, potentially accessing sensitive data, executing unauthorized actions, or escalating privileges on affected IBM i systems. The impact depends on the attacker's goals and system configuration.

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Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating compliance requirements under GDPR, HIPAA, or other regulations. Organizations may face penalties, reputational damage, or legal consequences if such breaches occur due to inadequate security controls.

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Mitigation Strategies

Apply IBM i PTFs or updates to address improper authentication during service-name matching. Monitor IBM i security bulletins for patches and verify service configurations to ensure proper authentication mechanisms are enforced.

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