CVE-2017-8189 in FusionSphere OpenStack
Summary
by MITRE
FusionSphere OpenStack V100R006C00SPC102(NFV)has a path traversal vulnerability. Due to insufficient path validation, an attacker with high privilege may exploit this vulnerability to cover some files, causing services abnormal.
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Analysis
by VulDB Data Team • 01/16/2023
The FusionSphere OpenStack vulnerability identified as CVE-2017-8189 represents a critical path traversal flaw within the NFV version of the platform. This vulnerability specifically affects FusionSphere OpenStack V100R006C00SPC102 and stems from inadequate input validation mechanisms that fail to properly sanitize file paths. The issue manifests when the system processes user-supplied file paths without sufficient validation, allowing malicious actors to manipulate directory traversal sequences that can lead to unauthorized file access and modification.
The technical implementation of this vulnerability falls under CWE-22 Path Traversal and aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter. The flaw occurs at the application layer where file operations are performed without proper sanitization of input parameters that control file system access. Attackers with high privilege access can exploit this weakness by crafting malicious file paths that bypass normal access controls, potentially leading to arbitrary file overwrites within the system. This type of vulnerability is particularly dangerous in cloud infrastructure environments where maintaining system integrity and data confidentiality is paramount.
The operational impact of this vulnerability extends beyond simple file manipulation, as it can result in service disruption and potential system compromise. When an attacker successfully exploits this path traversal vulnerability, they can overwrite critical system files, modify configuration parameters, or inject malicious code into the platform's file system. This capability compromises the integrity of the entire FusionSphere OpenStack deployment and can lead to denial of service conditions, unauthorized access to sensitive data, and potential escalation of privileges within the NFV environment. The vulnerability essentially undermines the security boundaries that protect the cloud infrastructure from malicious file system operations.
Mitigation strategies for CVE-2017-8189 should focus on implementing robust input validation and sanitization mechanisms throughout the application code. Organizations should deploy proper path validation routines that reject or normalize input containing directory traversal sequences such as ../ or ..\, ensuring that all file operations occur within designated safe directories. The implementation of principle of least privilege access controls combined with regular security audits of file system operations can significantly reduce the attack surface. Additionally, applying the latest security patches provided by Huawei for FusionSphere OpenStack V100R006C00SPC102 addresses the root cause of this vulnerability. Network segmentation and monitoring solutions should be deployed to detect anomalous file system access patterns that may indicate exploitation attempts, while regular penetration testing helps identify potential weaknesses in the system's file handling mechanisms and overall security posture.