CVE-2024-33786 in Ticketing Management Platform
Summary
by MITRE • 05/03/2024
An arbitrary file upload vulnerability in Zhongcheng Kexin Ticketing Management Platform 20.04 allows attackers to execute arbitrary code via uploading a crafted file.
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Analysis
by VulDB Data Team • 05/03/2024
The CVE-2024-33786 vulnerability represents a critical arbitrary file upload flaw in the Zhongcheng Kexin Ticketing Management Platform version 20.04 which fundamentally compromises the system's integrity and security posture. This vulnerability classifies under CWE-434 which specifically addresses insecure file upload handling, where the application fails to properly validate or restrict file types during the upload process. The flaw enables attackers to bypass normal security controls and upload malicious files that can subsequently be executed within the target environment, creating a severe attack surface that can lead to complete system compromise.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization mechanisms within the platform's file upload functionality. Attackers can exploit this weakness by crafting specially designed files that appear legitimate but contain malicious code or payloads. When these files are uploaded through the vulnerable interface, the system processes them without proper security checks, allowing the malicious content to be stored and potentially executed with the privileges of the web application. This type of vulnerability commonly occurs when applications fail to implement proper file type verification, content inspection, or when they permit uploads of executable file extensions such as .php, .asp, .jsp, or other script files that can be interpreted by the web server.
The operational impact of CVE-2024-33786 extends far beyond simple data theft or service disruption, as it provides attackers with a persistent foothold within the target environment. Once successful, the vulnerability enables attackers to execute arbitrary code on the server, potentially leading to complete system compromise, data exfiltration, lateral movement within the network, and establishment of backdoors for continued access. The platform's ticketing management functionality, which likely handles sensitive customer data, financial transactions, and business-critical information, becomes vulnerable to manipulation and unauthorized access. This vulnerability directly aligns with ATT&CK technique T1190 for Exploit Public-Facing Application and T1059 for Command and Scripting Interpreter, as it allows for command execution through crafted file uploads.
Security mitigations for this vulnerability must address both the immediate exploitation vectors and the underlying architectural weaknesses that permit such flaws. Organizations should implement strict file type validation and content inspection mechanisms, ensuring that only approved file extensions are accepted and that file contents are verified against expected formats. The platform should enforce proper file naming conventions, implement secure upload directories with restricted permissions, and utilize file content analysis to detect malicious payloads. Additionally, the application should employ web application firewalls and implement proper input sanitization to prevent attackers from bypassing validation checks. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities, while security patches and updates should be applied immediately upon vendor releases. The vulnerability also highlights the importance of following secure coding practices and implementing defense-in-depth strategies to prevent similar issues in other components of the application stack, as outlined in the OWASP Top Ten and NIST cybersecurity frameworks.