CVE-2022-23082 in CureKit
Summary
by MITRE • 05/31/2022
In CureKit versions v1.0.1 through v1.1.3 are vulnerable to path traversal as the function isFileOutsideDir fails to sanitize the user input which may lead to path traversal.
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Analysis
by VulDB Data Team • 06/04/2022
The vulnerability identified as CVE-2022-23082 affects CureKit versions v1.0.1 through v1.1.3 and represents a critical path traversal flaw that stems from inadequate input sanitization within the isFileOutsideDir function. This vulnerability exposes the application to potential unauthorized access and arbitrary file operations by allowing attackers to manipulate file paths through crafted user input. The flaw occurs when the application fails to properly validate or sanitize file paths before processing them, creating an opening for malicious actors to traverse the file system beyond intended directories.
The technical implementation of this vulnerability resides in the insufficient validation logic of the isFileOutsideDir function which is designed to verify whether a given file path exists outside of a designated directory scope. When user input containing directory traversal sequences such as ../ or ..\ is passed to this function, the sanitization mechanism fails to properly neutralize these sequences, allowing the traversal to succeed. This weakness directly maps to CWE-23 Path Traversal and CWE-77 Path Traversal, both of which are categorized under the broader weakness of improper input validation in file system operations. The vulnerability enables attackers to access files and directories that should normally be restricted, potentially leading to data exposure, system compromise, or privilege escalation.
The operational impact of this vulnerability extends beyond simple file access, as it can be leveraged to execute various malicious activities within the application's operational context. Attackers could potentially read sensitive configuration files, access database files, or even execute code if the application has sufficient privileges to manipulate system resources. The vulnerability is particularly dangerous in environments where CureKit is used for medical data management or other sensitive applications where unauthorized access to patient information or system files could result in significant data breaches. From an attack perspective, this vulnerability aligns with ATT&CK technique T1083 File and Directory Discovery, as attackers can use path traversal to enumerate system files and directories, and may also leverage it for T1566 Phishing with Malicious Attachments or T1059 Command and Scripting Interpreter if the application allows execution of commands based on file paths.
Mitigation strategies for CVE-2022-23082 should focus on implementing robust input validation and sanitization mechanisms within the isFileOutsideDir function. The recommended approach includes implementing strict path validation that rejects any input containing directory traversal sequences, employing absolute path resolution to normalize file paths, and implementing proper access controls that limit file system operations to intended directories. Organizations should immediately upgrade to CureKit version v1.1.4 or later, which contains the patched implementation of the isFileOutsideDir function with proper input sanitization. Additional defensive measures include implementing proper file access controls, monitoring for suspicious file access patterns, and conducting thorough code reviews to identify similar vulnerabilities in other functions that handle user-provided file paths. Security teams should also consider implementing network-based intrusion detection systems to monitor for exploitation attempts and establish incident response procedures for handling potential breaches resulting from this vulnerability.