CVE-2016-9869 in ScaleIO
Summary
by MITRE
An issue was discovered in EMC ScaleIO versions before 2.0.1.1. Incorrect permissions on the SCINI driver may allow a low-privileged local attacker to modify the configuration and render the ScaleIO Data Client (SDC) server unavailable.
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Analysis
by VulDB Data Team • 04/20/2025
The vulnerability identified as CVE-2016-9869 affects EMC ScaleIO storage software versions prior to 2.0.1.1, representing a critical access control flaw that undermines the security posture of enterprise storage infrastructure. This issue specifically targets the SCINI (ScaleIO Client Interface) driver component, which serves as the primary interface between the ScaleIO Data Client and the underlying storage system. The flaw stems from improper permission settings on the driver files, creating a privilege escalation vector that allows local attackers with minimal system access to manipulate critical configuration parameters. The vulnerability falls under the category of improper access control as classified by CWE-284, where insufficient permissions on system components enable unauthorized modification of security-sensitive elements.
The technical exploitation of this vulnerability enables a low-privileged local attacker to gain unauthorized access to the ScaleIO Data Client configuration mechanisms through the compromised SCINI driver permissions. This misconfiguration allows the attacker to modify critical system parameters that control how the SDC operates within the storage environment, potentially leading to service disruption or complete unavailability of the data client functionality. The attack vector is particularly concerning because it requires only local system access, making it accessible to users who might not have elevated privileges but still maintain presence on the target system. This scenario aligns with ATT&CK technique T1068, which covers local privilege escalation through the exploitation of system vulnerabilities.
The operational impact of this vulnerability extends beyond simple service disruption, as it can compromise the integrity and availability of the entire ScaleIO storage environment. When an attacker successfully modifies the SDC configuration, they can potentially cause cascading failures throughout the storage fabric, affecting data availability for applications and services that depend on the ScaleIO infrastructure. The vulnerability essentially provides an attacker with the ability to manipulate the storage client's behavior, which could lead to data corruption, unauthorized access to storage resources, or complete denial of service for storage operations. This risk is particularly severe in enterprise environments where ScaleIO deployments often serve as critical infrastructure components for mission-critical applications and data storage services.
Organizations affected by this vulnerability should prioritize immediate remediation through the installation of EMC ScaleIO version 2.0.1.1 or later, which includes the necessary permission fixes for the SCINI driver. System administrators should also conduct comprehensive security audits to verify that no unauthorized modifications have occurred within the ScaleIO environment, particularly focusing on the SDC configuration files and driver permissions. Additional mitigations include implementing principle of least privilege access controls, monitoring for unauthorized configuration changes, and conducting regular security assessments of storage infrastructure components. The vulnerability demonstrates the importance of proper permission management in storage systems and highlights the need for continuous security monitoring of critical infrastructure components that handle data access and storage operations.