CVE-2016-0230 in Power Hardware Management Console
Summary
by MITRE
IBM Power Hardware Management Console (HMC) 7.3 through 7.3.0 SP7, 7.9 through 7.9.0 SP3, 8.1 through 8.1.0 SP3, 8.2 through 8.2.0 SP2, 8.3 through 8.3.0 SP2, 8.4 through 8.4.0 SP1, and 8.5.0 allows physically proximate attackers to obtain root access via unspecified vectors.
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Analysis
by VulDB Data Team • 02/18/2019
The vulnerability identified as CVE-2016-0230 affects IBM Power Hardware Management Console versions spanning multiple release branches including 7.3 through 8.5.0, specifically impacting systems with firmware revisions up to and including Service Pack 7 for 7.3, Service Pack 3 for 7.9, Service Pack 3 for 8.1, Service Pack 2 for 8.2 and 8.3, Service Pack 1 for 8.4, and the initial release of 8.5.0. This security flaw represents a critical privilege escalation vulnerability that enables attackers with physical proximity to the affected systems to gain root access, fundamentally compromising the security posture of enterprise Power systems. The vulnerability exists within the hardware management console's authentication and authorization mechanisms, creating a significant attack surface that adversaries can exploit without requiring network connectivity or sophisticated exploitation techniques.
The technical nature of this vulnerability stems from insufficient security controls that allow unauthorized physical access to result in complete system compromise. Attackers positioned physically near the target systems can leverage unspecified vectors to escalate privileges from standard user levels to root access, effectively bypassing all normal security boundaries. This flaw operates at the system level rather than at the application layer, making it particularly dangerous as it can be exploited through direct hardware interaction or through manipulation of the console's physical interfaces. The vulnerability's classification aligns with CWE-284, which addresses improper access control, and represents a significant weakness in the physical security model of the HMC environment. The attack vector specifically enables local privilege escalation through physical proximity, making it a particularly concerning issue for enterprise environments where physical security controls may not be adequately enforced.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as root access to HMC systems provides attackers with complete control over the managed Power systems. This includes the ability to modify system configurations, access sensitive data, manipulate system resources, and potentially cause system instability or denial of service conditions. Organizations utilizing IBM Power systems with affected HMC versions face significant risks to their infrastructure integrity, as attackers can effectively take control of their entire Power environment from a single compromised console. The vulnerability's impact is particularly severe in data center environments where physical access controls may be inadequate, potentially allowing malicious actors to gain unauthorized access during routine maintenance or administrative activities. The threat landscape for this vulnerability includes both insider threats and external attackers who can gain physical access to the console environment, making it a critical concern for organizations with centralized system management.
Mitigation strategies for CVE-2016-0230 require immediate implementation of both software and physical security measures to address the privilege escalation vulnerability. Organizations should prioritize applying the relevant IBM security patches and service packs that address this specific vulnerability, ensuring all affected HMC systems receive the necessary updates to close the access control gaps. Physical security controls must be enhanced through strict access management protocols, including restricted console access, mandatory authentication for all console interactions, and regular security audits of console environments. The implementation of additional monitoring solutions that track console access and authentication attempts can provide early detection of potential exploitation attempts. Security teams should also consider implementing network segmentation controls to limit access to HMC systems, while establishing strict change management procedures for console configurations and access controls. These measures align with the ATT&CK framework's privilege escalation tactics and techniques, specifically addressing the T1068 and T1548 sub-techniques that relate to local privilege escalation and abuse of system permissions. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches across all system components, particularly those managing critical infrastructure, as unpatched systems remain vulnerable to exploitation regardless of other security controls in place.