CVE-2017-8007 in ViPR SRM
Summary
by MITRE
In EMC ViPR SRM, Storage M&R, VNX M&R, and M&R (Watch4Net) for SAS Solution Packs, the Webservice Gateway is affected by a directory traversal vulnerability. Attackers with knowledge of Webservice Gateway credentials could potentially exploit this vulnerability to access unauthorized information, and modify or delete data, by supplying specially crafted strings in input parameters of the web service call.
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Analysis
by VulDB Data Team • 01/14/2021
The vulnerability identified as CVE-2017-8007 represents a critical directory traversal flaw within the Webservice Gateway component of several EMC storage management solutions including ViPR SRM, Storage M&R, VNX M&R, and M&R for SAS Solution Packs. This directory traversal vulnerability stems from insufficient input validation mechanisms within the web service gateway that processes user-supplied parameters. The flaw allows authenticated attackers who possess valid Webservice Gateway credentials to manipulate input parameters through specially crafted strings that can traverse the file system directories beyond the intended scope of access. The vulnerability specifically affects the handling of file path references within web service calls, enabling attackers to access sensitive system files, configuration data, and potentially execute unauthorized operations.
From a technical perspective, this vulnerability aligns with CWE-22 which defines the weakness of improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. The flaw occurs when the web service gateway fails to properly sanitize or validate user input parameters that contain file path references, allowing maliciously constructed paths to navigate through the file system hierarchy. Attackers can exploit this by crafting input parameters that contain sequences such as "../" or similar path manipulation strings that bypass normal access controls and permit access to files outside the intended directory boundaries. The vulnerability demonstrates a classic lack of input sanitization and proper path validation that is fundamental to secure application design principles.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass data integrity and availability concerns. Successful exploitation could enable attackers to access sensitive configuration files, system logs, and potentially administrative credentials stored within the application's file system. The ability to modify or delete data through this vulnerability creates significant risk for storage management environments where data integrity is paramount. Organizations relying on these EMC solutions for critical storage infrastructure management face potential exposure to unauthorized data manipulation, which could compromise the reliability and security of their storage systems. The vulnerability particularly affects environments where the Webservice Gateway serves as an entry point for administrative functions and data access operations.
Mitigation strategies for CVE-2017-8007 should prioritize immediate patch deployment from EMC as the primary remediation measure, as this vulnerability requires vendor-specific fixes to address the underlying implementation flaws. Organizations should implement network segmentation to limit access to the Webservice Gateway component and enforce principle of least privilege for credentials used to access these services. Additional defensive measures include implementing input validation controls at the application level, deploying web application firewalls to detect and block suspicious path traversal patterns, and conducting regular security assessments of the affected systems. The vulnerability also highlights the importance of secure coding practices and proper input validation as outlined in the OWASP Top Ten and MITRE ATT&CK framework, particularly in the context of web service security and privilege escalation techniques that attackers can leverage through directory traversal vulnerabilities.