CVE-2016-0426 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 11 allows local users to affect confidentiality and availability via unknown vectors related to Solaris Kernel Zones.
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Analysis
by VulDB Data Team • 07/05/2022
The vulnerability identified as CVE-2016-0426 represents a significant security flaw within Oracle Sun Solaris 11 operating system that resides in the Solaris Kernel Zones component. This issue falls under the broader category of kernel-level vulnerabilities that can potentially compromise system integrity and security posture. The vulnerability affects local users who possess legitimate system access, making it particularly concerning as it can be exploited from within the system rather than through external network attacks. The unspecified nature of the exact attack vectors suggests that the flaw may involve multiple potential pathways for exploitation within the kernel zones framework.
The technical implementation of this vulnerability stems from weaknesses within the Solaris Kernel Zones functionality, which provides isolation mechanisms for running multiple operating system instances on a single physical machine. Kernel zones are designed to offer lightweight virtualization capabilities while maintaining system security boundaries. However, the flaw in this particular implementation allows local users to potentially bypass these security controls, creating opportunities to access sensitive information or disrupt system operations. The vulnerability's impact on both confidentiality and availability indicates that attackers could either extract confidential data or cause system disruptions that affect service availability. This dual impact makes the vulnerability particularly dangerous as it provides multiple attack vectors for compromising system security.
From an operational perspective, the exploitation of this vulnerability can result in severe consequences for organizations relying on Solaris 11 systems. Local privilege escalation opportunities mean that attackers who already have user-level access can potentially gain elevated privileges, leading to complete system compromise. The confidentiality impact allows for unauthorized data access, which could include sensitive system information, user credentials, or proprietary data stored on the affected systems. The availability impact could manifest through denial of service conditions that prevent legitimate users from accessing system resources or services. This vulnerability particularly affects enterprise environments where Solaris 11 systems may host critical applications and data repositories. The local nature of the attack means that attackers need minimal initial access, making this vulnerability especially dangerous in environments where user access controls are not properly enforced.
Security professionals should consider this vulnerability in the context of the CWE (Common Weakness Enumeration) framework, where such kernel-level flaws typically map to weaknesses related to insufficient privilege separation or inadequate access controls within system kernel components. The ATT&CK framework would classify this vulnerability under privilege escalation techniques, potentially falling into the category of local privilege escalation through kernel exploits. Organizations should implement immediate mitigations including applying Oracle's security patches and updates, implementing strict access controls, and monitoring for suspicious activities that might indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date system configurations and the need for comprehensive security assessments of kernel-level components. Additionally, system administrators should consider implementing network segmentation and monitoring solutions to detect potential exploitation attempts and maintain visibility into system activities that could indicate compromise.