CVE-2017-8020 in ScaleIO
Summary
by MITRE
An issue was discovered in EMC ScaleIO 2.0.1.x. A buffer overflow vulnerability in the SDBG service may potentially allow a remote unauthenticated attacker to execute arbitrary commands with root privileges on an affected server.
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Analysis
by VulDB Data Team • 01/25/2021
The vulnerability identified as CVE-2017-8020 represents a critical buffer overflow flaw within the SDBG service component of EMC ScaleIO version 2.0.1.x. This distributed storage platform is designed to provide software-defined storage solutions for enterprise environments, making the discovery of such a vulnerability particularly concerning from a cybersecurity perspective. The SDBG service operates as a debugging interface that facilitates diagnostic operations and system monitoring, but in this case it became a vector for remote code execution attacks.
The technical nature of this vulnerability stems from improper input validation within the SDBG service implementation. When processing incoming network requests, the service fails to adequately check buffer boundaries, allowing attackers to overflow memory structures and potentially overwrite critical program execution elements. This type of flaw falls under the Common Weakness Enumeration category CWE-121, which specifically addresses stack-based buffer overflow conditions that can lead to arbitrary code execution. The vulnerability is particularly dangerous because it does not require authentication credentials for exploitation, making it accessible to any remote attacker who can reach the affected service.
From an operational standpoint, the impact of this vulnerability extends beyond simple privilege escalation to encompass complete system compromise. Successful exploitation enables attackers to execute arbitrary commands with root privileges, effectively granting them full administrative control over the affected ScaleIO server. This level of access allows threat actors to manipulate storage configurations, access sensitive data, install malware, or establish persistent backdoors within the enterprise storage infrastructure. The implications are severe for organizations relying on ScaleIO for critical data storage operations, as the compromise of a single storage node could potentially expose entire storage clusters to unauthorized access and manipulation.
The attack surface for this vulnerability is particularly concerning given the nature of storage infrastructure within enterprise environments. Storage systems often contain sensitive organizational data and serve as foundational components for business operations, making them attractive targets for sophisticated attackers. Organizations utilizing EMC ScaleIO 2.0.1.x should immediately implement mitigations including network segmentation to restrict access to the SDBG service, applying vendor-provided security patches, and monitoring for suspicious network activity. The ATT&CK framework categorizes this type of vulnerability exploitation under T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation, highlighting the multi-stage nature of attacks that leverage such vulnerabilities. Additionally, implementing network intrusion detection systems and conducting regular security assessments can help identify potential exploitation attempts and maintain overall security posture against similar threats.