CVE-2022-34551 in Sims
Summary
by MITRE • 07/27/2022
Sims v1.0 was discovered to allow path traversal when downloading attachments.
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Analysis
by VulDB Data Team • 07/27/2022
The vulnerability identified as CVE-2022-34551 affects Sims v1.0 software and represents a critical path traversal flaw that enables unauthorized access to files outside the intended download directory. This issue arises from insufficient input validation during attachment download operations, allowing malicious actors to manipulate file paths and access sensitive system resources. The vulnerability stems from improper handling of user-supplied data in the attachment processing pipeline, where relative path references are not adequately sanitized or restricted. Attackers can exploit this weakness by crafting specially formatted download requests that leverage directory traversal sequences such as ../ or ..\ to navigate beyond the designated attachment storage locations. The flaw directly maps to CWE-22, which defines path traversal vulnerabilities as improper restriction of file access, allowing attackers to access files and directories that are not intended to be accessible through the application's interface.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it provides attackers with the capability to read system configuration files, log data, and potentially sensitive user information stored on the same server. When combined with other exploitation techniques, this path traversal vulnerability can lead to complete system compromise, especially if the application runs with elevated privileges or has access to critical system resources. The vulnerability affects any user interaction involving attachment downloads, making it particularly dangerous in environments where users can upload or request various file types. Security professionals should note that this flaw aligns with ATT&CK technique T1074.001, which covers data staging through local file systems, and T1566.001, covering spearphishing attachments as initial access vectors. The vulnerability's exploitation typically requires minimal technical expertise and can be automated through various attack frameworks, making it a significant concern for organizations relying on the affected software.
Mitigation strategies for CVE-2022-34551 should focus on implementing robust input validation and sanitization mechanisms within the attachment download functionality. Organizations should immediately implement path normalization and validation that prevents any relative path components from being processed in download requests. The recommended approach includes implementing strict whitelist validation for allowed file paths, ensuring that all user-supplied paths are resolved within the intended directory boundaries. Additionally, the application should enforce proper access controls and privilege separation to minimize the impact of potential exploitation. Security patches should address the core issue by validating file paths against a predetermined safe directory structure, preventing any traversal outside of authorized locations. System administrators should also implement monitoring and logging for download activities to detect anomalous path requests that may indicate exploitation attempts. The remediation process should include comprehensive testing to ensure that legitimate functionality remains intact while eliminating the vulnerability's attack surface. Organizations should consider implementing additional security controls such as web application firewalls and intrusion detection systems to provide defense-in-depth protection against exploitation attempts targeting this specific vulnerability.