CVE-2022-34378 in PowerScale OneFS
Summary
by MITRE • 09/02/2022
Dell PowerScale OneFS, versions 9.0.0 up to and including 9.1.0.20, 9.2.1.13, 9.3.0.6, and 9.4.0.3, contain a relative path traversal vulnerability. A low privileged local attacker could potentially exploit this vulnerability, leading to denial of service.
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Analysis
by VulDB Data Team • 10/13/2022
The vulnerability identified as CVE-2022-34378 affects Dell PowerScale OneFS storage systems across multiple version ranges including 9.0.0 through 9.1.0.20, 9.2.1.13, 9.3.0.6, and 9.4.0.3. This represents a significant security weakness in enterprise storage infrastructure that could be exploited by malicious actors within the network perimeter. The vulnerability stems from improper input validation mechanisms that fail to adequately sanitize file path references during system operations. The affected systems operate under the assumption that all file access requests originate from trusted sources, creating an exploitable condition where crafted relative path references can bypass normal access controls.
The technical flaw manifests as a relative path traversal vulnerability classified under CWE-23, which specifically addresses improper limitation of a pathname to a restricted directory. This weakness allows attackers to manipulate file system access by using directory traversal sequences such as "../" to navigate outside of intended directories. In the context of PowerScale OneFS, the vulnerability occurs when the system processes file operations without proper validation of the relative paths provided by local users. The implementation fails to normalize or validate path components, enabling an attacker to construct malicious paths that can access restricted system files or directories. This particular implementation flaw affects the storage system's file handling mechanisms and could potentially expose sensitive system information or disrupt normal operations.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable more severe security consequences. A low privileged local attacker with access to the system can exploit this weakness to cause service disruption or gain unauthorized access to system resources that should remain protected. The vulnerability's classification as a local attack vector means that exploitation requires physical or network access to the target system, but does not require elevated privileges. This makes it particularly concerning for environments where physical security controls may be insufficient or where insider threats exist. The potential for denial of service impacts business continuity by disrupting storage services and potentially affecting critical data operations that organizations depend upon for daily operations.
Mitigation strategies for CVE-2022-34378 should focus on immediate patching of affected systems to ensure all vulnerable versions are updated to patched releases. Organizations should implement network segmentation to limit local access to storage systems and enforce strict access controls for system administration. The implementation of input validation controls and path normalization should be enforced at all levels of the storage system architecture. Security monitoring should be enhanced to detect anomalous file access patterns that may indicate exploitation attempts. System administrators should conduct thorough vulnerability assessments to identify any other potential path traversal weaknesses in related systems. The use of principle of least privilege should be enforced to minimize the potential impact of any successful exploitation attempts. Regular security updates and patch management processes should be strengthened to prevent similar vulnerabilities from being introduced in future releases. Organizations should also consider implementing intrusion detection systems that can identify and alert on suspicious file system access patterns that may indicate exploitation of similar vulnerabilities.