Privilege Escalation in IBM i via Thread Authority Swap

Executive Summary

This vulnerability in IBM i 7.6, 7.5, 7.4, and 7.3 allows a local attacker to gain elevated privileges. It occurs due to improper management of thread authority swaps, which could let the attacker bypass security controls and execute actions with higher permissions than intended.

Useful 0 Not Useful 0

Detection Guidance

Detection of this vulnerability requires checking for improper thread authority swaps in IBM i systems. Review system logs for unusual privilege escalation events and monitor for unauthorized changes to user authorities. Use IBM i commands like DSPLOG to examine job logs, WRKACTJOB to check active jobs, and DSPAUT to review user authorities. Ensure all systems are updated to the latest IBM i fix levels.

Useful 0 Not Useful 0

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain full control over the system, access sensitive data, install malware, or disrupt operations. Since it requires local access, attackers must already have some level of system access to exploit it.

Useful 0 Not Useful 0

Compliance Impact

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

Useful 0 Not Useful 0

Mitigation Strategies

Apply the latest IBM i PTFs or updates provided by IBM to address the improper thread authority swap issue. Monitor IBM security advisories for patches and verify their installation on affected systems.

Useful 0 Not Useful 0