CVE-2016-9871 in Isilon OneFS
Summary
by MITRE
EMC Isilon OneFS 7.2.1.0 - 7.2.1.3, EMC Isilon OneFS 7.2.0.x, EMC Isilon OneFS 7.1.1.0 - 7.1.1.10, EMC Isilon OneFS 7.1.0.x is affected by a privilege escalation vulnerability that could potentially be exploited by attackers to compromise the affected system.
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Analysis
by VulDB Data Team • 11/04/2022
The vulnerability identified as CVE-2016-9871 represents a critical privilege escalation flaw within EMC Isilon OneFS storage systems across multiple version ranges including 7.2.1.0 through 7.2.1.3, 7.2.0.x, 7.1.1.0 through 7.1.1.10, and 7.1.0.x. This vulnerability resides in the system's authorization mechanisms and allows unauthenticated attackers to gain elevated privileges that would normally require legitimate administrative credentials. The flaw specifically impacts the way the system handles user permissions and access controls, creating a pathway for malicious actors to bypass normal security boundaries and execute commands with heightened privileges.
The technical implementation of this vulnerability stems from improper validation of user authentication tokens and insufficient access control checks within the OneFS operating system. Attackers can exploit this weakness to escalate their privileges from standard user level to administrative level without requiring valid credentials, effectively allowing them to assume complete control over the affected storage infrastructure. This type of vulnerability falls under the CWE-276 category of improper privilege management, where the system fails to properly enforce access controls and authorization mechanisms. The vulnerability demonstrates a fundamental flaw in the system's security model where legitimate administrative functions can be accessed through unauthorized means, creating a persistent backdoor for attackers.
The operational impact of CVE-2016-9871 is severe and multifaceted, affecting organizations that rely on EMC Isilon storage solutions for critical data infrastructure. Successful exploitation enables attackers to access, modify, or delete sensitive data stored on the affected systems, potentially leading to data breaches, system compromise, and complete loss of storage infrastructure control. The vulnerability also creates opportunities for lateral movement within networks, as compromised storage systems often serve as central data repositories that other systems depend upon. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and can be leveraged to establish persistent access through the T1068 privilege escalation tactic, potentially leading to broader network infiltration.
Organizations affected by this vulnerability should immediately implement mitigations including applying the latest security patches provided by EMC, restricting network access to Isilon systems, implementing strict firewall rules, and monitoring for unauthorized access attempts. The vulnerability also highlights the importance of network segmentation and principle of least privilege enforcement, as attackers could use this flaw to gain access to multiple systems within a network. Security teams should conduct thorough audits of their Isilon deployments to identify all affected versions and ensure proper access controls are implemented. Additionally, continuous monitoring for anomalous system behavior and unauthorized privilege escalation attempts should be implemented to detect potential exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches and implementing comprehensive security monitoring strategies for enterprise storage infrastructure.