CVE-2024-0989 in KuERP
Summary
by MITRE • 01/29/2024
A vulnerability, which was classified as problematic, has been found in Sichuan Yougou Technology KuERP up to 1.0.4. Affected by this issue is the function del_sn_db of the file /application/index/controller/Service.php. The manipulation of the argument file leads to path traversal: '../filedir'. The exploit has been disclosed to the public and may be used. VDB-252254 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 02/21/2024
This vulnerability exists within the KuERP application developed by Sichuan Yougou Technology, specifically affecting versions up to 1.0.4. The issue resides in the del_sn_db function located in the /application/index/controller/Service.php file, representing a critical path traversal flaw that allows unauthorized access to arbitrary files on the server. The vulnerability manifests when an attacker manipulates the file argument parameter to include path traversal sequences such as '../filedir', enabling them to navigate beyond the intended directory structure and access sensitive system files or directories. This type of vulnerability falls under CWE-22, which specifically addresses path traversal or directory traversal attacks that occur when untrusted input is used to construct file paths without proper validation or sanitization. The disclosure of this exploit represents a significant security risk as it provides attackers with a direct method to bypass normal access controls and potentially gain unauthorized access to critical system resources. The vulnerability's public disclosure status, as indicated by VDB-252254 identifier, suggests that malicious actors have already developed working exploit code that can be leveraged against affected systems. The lack of vendor response to early disclosure attempts creates additional risk for organizations using this software, as they may remain unaware of the vulnerability or unable to obtain timely patches or mitigation guidance. This issue directly impacts the application's security posture by potentially allowing attackers to read sensitive files, access configuration data, or even execute arbitrary code depending on the server configuration and file permissions. The vulnerability's impact extends beyond simple file access, as it could enable attackers to escalate privileges, access user data, or compromise the entire server infrastructure. From an operational perspective, this vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing for Information) as attackers can use path traversal to discover system files and potentially extract sensitive information. Organizations using KuERP versions 1.0.4 or earlier should immediately implement mitigations such as input validation, parameterized queries, and proper file access controls. The vulnerability represents a critical risk for any environment where the application is deployed, particularly in production environments where sensitive data may be accessible through the affected function. The security implications are compounded by the fact that this vulnerability can be exploited without authentication, making it particularly dangerous for publicly accessible applications. Mitigation strategies should include immediate code review and patching, implementation of web application firewalls, and comprehensive monitoring for suspicious file access patterns. Additionally, organizations should consider implementing principle of least privilege access controls and regular security assessments to identify similar vulnerabilities in other application components.
The path traversal vulnerability in KuERP demonstrates a fundamental flaw in input validation and access control mechanisms within the application's file handling functions. This weakness enables attackers to manipulate file paths through crafted input parameters, potentially allowing access to system directories and sensitive files that should remain protected. The vulnerability's classification as problematic reflects its potential for serious security consequences, particularly when combined with the public availability of exploit code. The specific function del_sn_db in Service.php represents a critical attack surface where improper sanitization of user-supplied input creates an avenue for malicious file access. Security researchers and penetration testers should prioritize identifying similar path traversal vulnerabilities in other applications and systems, as this attack vector remains prevalent in web applications due to insufficient input validation. The lack of vendor response to initial disclosure attempts creates a dangerous precedent, as organizations may be left vulnerable without proper remediation guidance. This vulnerability highlights the importance of secure coding practices, particularly in file handling operations where user input directly influences file system access. Organizations should implement comprehensive security controls including proper input validation, access control lists, and regular security audits to prevent similar vulnerabilities from compromising their systems. The public disclosure of this exploit creates an immediate risk for all affected installations, requiring urgent action to assess exposure and implement appropriate protective measures.