CVE-2016-9867 in ScaleIO
Summary
by MITRE
An issue was discovered in EMC ScaleIO versions before 2.0.1.1. A low-privileged local attacker may be able to modify the kernel memory in the SCINI driver and may achieve code execution to escalate privileges to root on ScaleIO Data Client (SDC) servers.
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Analysis
by VulDB Data Team • 04/20/2025
The vulnerability identified as CVE-2016-9867 represents a critical privilege escalation flaw within the EMC ScaleIO storage platform, specifically affecting versions prior to 2.0.1.1. This issue resides in the SCINI driver component of the ScaleIO Data Client (SDC) servers, where a low-privileged local user can exploit a kernel memory modification vulnerability to achieve root-level system access. The flaw fundamentally undermines the security model of the storage platform by allowing unauthorized users to bypass normal access controls and execute arbitrary code with the highest system privileges.
The technical implementation of this vulnerability stems from inadequate input validation and memory management within the SCINI driver module. Attackers can manipulate kernel memory structures through crafted inputs or direct memory access operations that should be restricted to privileged system components. This type of vulnerability aligns with CWE-122, which describes improper restriction of operations within a memory buffer, and represents a classic kernel-level privilege escalation vector. The flaw enables an attacker to modify critical kernel data structures, potentially corrupting system integrity and allowing arbitrary code execution in kernel space.
The operational impact of CVE-2016-9867 extends beyond simple privilege escalation, as it fundamentally compromises the security posture of ScaleIO environments. SDC servers, which serve as the primary interface between storage arrays and compute nodes, become potential attack vectors for lateral movement within storage networks. Once an attacker achieves root access on an SDC server, they can manipulate storage volumes, access sensitive data, or establish persistent backdoors within the storage infrastructure. This vulnerability directly maps to ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation', and T1566, which encompasses 'Phishing for Information', as the initial compromise often occurs through social engineering or other attack vectors that lead to local access.
Organizations utilizing EMC ScaleIO platforms must implement immediate remediation measures including updating to version 2.0.1.1 or later, which contains patches addressing the kernel memory modification vulnerability. System administrators should also enforce strict access controls and monitor for unauthorized local access attempts on SDC servers. Additional mitigations include implementing kernel module signing requirements, disabling unnecessary kernel debugging features, and conducting regular security assessments of storage infrastructure components. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches in enterprise storage systems, as these platforms often serve as central points of compromise within larger network infrastructures.