CVE-2017-4988 in Isilon OneFS
Summary
by MITRE
EMC Isilon OneFS 8.0.1.0, 8.0.0 - 8.0.0.3, 7.2.0 - 7.2.1.4, 7.1.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 • 10/19/2019
The vulnerability identified as CVE-2017-4988 represents a critical privilege escalation flaw within EMC Isilon OneFS storage operating system versions ranging from 8.0.1.0 through 8.0.0.3, as well as 7.2.0 to 7.2.1.4 and 7.1.x releases. This vulnerability resides in the system's authorization mechanisms and allows unprivileged attackers to escalate their privileges to administrative levels, potentially leading to complete system compromise. The flaw stems from insufficient access controls and improper privilege validation within the storage system's authentication framework, creating a pathway for malicious actors to bypass normal security restrictions and gain elevated system privileges.
The technical implementation of this vulnerability involves a weakness in the privilege validation process where the system fails to properly verify user credentials and authorization levels during critical system operations. Attackers can exploit this by manipulating system calls or using specific command sequences that should require administrative privileges but instead execute with elevated permissions due to the flawed access control checks. This type of vulnerability maps directly to CWE-276, which describes improper privilege management, and aligns with ATT&CK technique T1068, which covers privilege escalation through local exploits. The vulnerability essentially allows attackers to perform operations that should be restricted to system administrators, including but not limited to modifying system configurations, accessing sensitive data, and potentially installing malicious software.
The operational impact of CVE-2017-4988 extends beyond simple privilege escalation, as it fundamentally compromises the integrity and confidentiality of the affected storage infrastructure. Organizations using vulnerable Isilon systems face significant risk of data breaches, system compromise, and potential lateral movement within their network infrastructure. Storage systems often contain sensitive corporate data, making them attractive targets for attackers seeking persistent access to organizational resources. The vulnerability's presence in multiple release versions indicates a widespread exposure across EMC Isilon deployments, potentially affecting hundreds or thousands of organizations that have not yet applied the necessary security patches. This creates a substantial risk for enterprises that may have delayed patching due to operational constraints or lack of awareness regarding the severity of the issue.
Organizations should implement immediate mitigation strategies including applying the vendor-provided security patches released by EMC to address the privilege escalation vulnerability. System administrators must conduct thorough vulnerability assessments to identify all affected Isilon OneFS installations and prioritize patching efforts based on risk exposure and business criticality. Network segmentation and monitoring should be enhanced to detect anomalous privilege escalation activities, as attackers may attempt to exploit this vulnerability to establish persistent access. The vulnerability's classification as a high-severity issue under the CVSS scoring system indicates that organizations should treat this as an immediate priority for remediation. Additionally, implementing comprehensive audit logging and access control monitoring can help detect exploitation attempts and provide forensic evidence for incident response activities. Organizations should also consider conducting security awareness training for system administrators to recognize potential exploitation indicators and maintain updated security baselines for their storage infrastructure deployments.