CVE-2024-1703 in CRMEB
Summary
by MITRE • 02/21/2024
A vulnerability was found in ZhongBangKeJi CRMEB 5.2.2. It has been classified as problematic. This affects the function openfile of the file /adminapi/system/file/openfile. The manipulation leads to absolute path traversal. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-254391. 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 • 12/04/2024
The vulnerability identified as CVE-2024-1703 represents a critical absolute path traversal flaw within the ZhongBangKeJi CRMEB 5.2.2 web application framework. This security weakness specifically impacts the openfile function located in the /adminapi/system/file/openfile endpoint, exposing the system to unauthorized file access and potential data breaches. The vulnerability's classification as problematic indicates its severity and potential for exploitation by malicious actors without requiring specialized tools or techniques.
The technical implementation of this flaw stems from inadequate input validation and sanitization within the file handling mechanism. When the openfile function processes user-supplied parameters, it fails to properly validate or sanitize the file path inputs, allowing attackers to manipulate the system's file access routines. This weakness enables attackers to traverse the file system beyond the intended directory boundaries, potentially accessing sensitive files, configuration data, or system resources that should remain protected. The vulnerability operates through path traversal techniques that leverage directory navigation sequences such as ../ or ..\ to move up the directory hierarchy and access files outside the designated application scope.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it can lead to complete system compromise and data exfiltration. Attackers exploiting this flaw can potentially access database configuration files, application source code, user credentials, and other sensitive information stored on the server. The public disclosure of this exploit means that threat actors can readily implement the attack without requiring advanced technical knowledge, significantly increasing the risk to affected systems. The lack of vendor response to early disclosure attempts compounds the severity, leaving organizations without official patches or mitigation guidance during the active exploitation period.
Organizations utilizing ZhongBangKeJi CRMEB 5.2.2 must implement immediate defensive measures including input validation controls, access restriction mechanisms, and comprehensive monitoring of file access patterns. The vulnerability aligns with CWE-22 Path Traversal and follows attack patterns documented in the MITRE ATT&CK framework under the T1078 Valid Accounts and T1566 Phishing techniques. Security teams should deploy web application firewalls to filter suspicious path traversal attempts and conduct thorough code reviews to identify similar vulnerabilities in other file handling functions. Additionally, implementing principle of least privilege access controls and regular security audits will help minimize potential damage from this and related vulnerabilities.
This vulnerability demonstrates the critical importance of proper input validation in web applications and highlights the risks associated with delayed vendor response to security disclosures. The combination of public exploit availability and lack of vendor remediation creates an urgent security concern requiring immediate organizational action. Organizations should prioritize patch management processes and maintain communication channels with vendors to ensure timely resolution of security issues. The incident underscores the necessity of proactive security measures including regular penetration testing, security code reviews, and implementation of defense-in-depth strategies to protect against similar path traversal vulnerabilities in other applications and systems.