IBM i: Security bypass and denial of service vulnerability
A local vulnerability in IBM i allows a local attacker to bypass security controls and trigger a denial of service condition.
Triage facts
Revision 1- Applicability
- IBM i
- Evidence
- Unknown
- Severity
- Medium
- Action
- Monitor or close
- Sources
- 1 public source
- Freshness
- Revision 1Nov 3, 15:43 UTC
- Source quality
- A3Roughly even chance
A security vulnerability has been identified in IBM i that may allow a local attacker to bypass existing security controls and initiate a denial of service (DoS) state on the affected system. The vulnerability requires local access to the target environment. No specific CVE identifier is currently associated with this advisory.
Impact
Successful exploitation allows for the bypass of security measures and the disruption of system availability (Denial of Service).
Recommendation
- Inventory all IBM i instances within the environment to identify systems running affected versions.
- Monitor vendor advisory channels for IBM i security patches or mitigation configurations.
- Restrict local system access to authorized personnel to minimize the potential for exploitation of this local-access vulnerability.
Immediate actions
Inventory all IBM i systems and review access control lists (ACLs) to ensure only authorized users have local access.
Threat Hunt
Monitor for unauthorized local login attempts or unusual elevated process activity on IBM i servers.
Data: IBM i Audit Journal (QAUDJRN) entries for object access and system service activity.
Mitigations
Apply vendor-supplied patches for IBM i once released.
Security bypass and DoS vulnerability in IBM i