CVE-2024-11054 in Simple Music Cloud Community System
Summary
by MITRE • 11/10/2024
A vulnerability classified as critical was found in SourceCodester Simple Music Cloud Community System 1.0. This vulnerability affects unknown code of the file /music/ajax.php?action=signup. The manipulation of the argument pp leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 11/14/2024
This critical vulnerability exists in the SourceCodester Simple Music Cloud Community System version 1.0 within the /music/ajax.php script when processing the signup action. The flaw specifically resides in the handling of the pp parameter which controls the upload functionality, creating an unrestricted file upload condition that allows remote attackers to execute arbitrary code on the affected system. The vulnerability stems from inadequate input validation and sanitization of user-supplied data, particularly in the context of file upload operations where the application fails to properly verify file types and content before processing. This weakness enables attackers to bypass security controls and upload malicious files such as web shells or executable code that can be executed within the application's context, potentially leading to complete system compromise. The remote exploitation capability means that attackers do not require physical access or local network presence to exploit this vulnerability, making it particularly dangerous in publicly accessible environments. According to CWE classification, this represents a direct instance of CWE-434 Unrestricted Upload of File with Dangerous Type, which specifically addresses the scenario where applications allow file uploads without proper validation of file types and content. The vulnerability's impact extends beyond simple code execution to include potential privilege escalation, data theft, and persistence mechanisms that attackers can leverage to maintain access to the compromised system. The disclosure of the exploit publicly increases the risk profile significantly, as it provides threat actors with ready-made tools to target installations of this software without requiring additional research or development time. This vulnerability aligns with ATT&CK technique T1190 Exploit Public-Facing Application, which describes how adversaries target vulnerabilities in externally accessible applications to establish initial access. The attack vector involves sending malicious payloads through the signup functionality, where the pp parameter is manipulated to include executable code or malicious file types that are then processed by the vulnerable application. The lack of proper file type validation and content inspection creates a pathway for attackers to upload files with extensions such as .php, .asp, .jsp, or other server-side script files that can be executed directly by the web server.
The operational impact of this vulnerability is severe and multifaceted, potentially allowing attackers to gain complete control over the affected system and its underlying infrastructure. Once exploited, the attacker can establish persistent access through uploaded web shells, manipulate database contents, steal sensitive user data, and use the compromised system as a launchpad for further attacks within the network. The vulnerability affects not just individual user accounts but can potentially compromise the entire application infrastructure, including databases, file systems, and associated services. Organizations running this software are at risk of data breaches, regulatory compliance violations, and potential legal consequences due to the exposure of sensitive information. The unrestricted upload capability also enables attackers to deploy malware, backdoors, or other malicious tools that can be used for ongoing surveillance or to facilitate additional attacks. The vulnerability's critical classification indicates that it can be exploited without requiring special privileges or access, making it particularly attractive to threat actors who seek to compromise systems quickly and efficiently. From a security perspective, this vulnerability represents a failure in the principle of least privilege and proper input validation, as the application should never trust user-provided data without thorough sanitization and verification. The attack surface is expanded by the fact that the vulnerability exists in a community system that may be widely deployed across multiple organizations, increasing the potential impact of the public disclosure. Organizations should immediately assess their exposure to this vulnerability and implement emergency mitigations to protect their systems from exploitation. The vulnerability's presence in a community system also suggests that similar issues may exist in other components of the application, warranting comprehensive security assessment and code review.
Mitigation strategies for this vulnerability must be implemented immediately to protect affected systems from exploitation. The most effective immediate fix involves implementing strict file type validation and content inspection mechanisms within the application's upload handling code, ensuring that only approved file types are accepted and that file contents are verified against known safe patterns. Organizations should also implement proper input sanitization and parameter validation for all user-supplied data, particularly in the pp parameter handling within the signup functionality. The application should enforce file size limits and implement proper file naming conventions to prevent path traversal attacks and other related vulnerabilities. Additionally, implementing proper access controls and authentication mechanisms can help limit the impact of successful exploitation attempts. Security monitoring and logging should be enhanced to detect suspicious upload activities and unauthorized access attempts. Organizations should also consider implementing web application firewalls and intrusion detection systems that can identify and block malicious upload attempts. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities throughout the application codebase. The implementation of secure coding practices and regular security training for development teams can help prevent similar issues in future releases. Organizations should also establish incident response procedures to quickly address any exploitation attempts and minimize potential damage. Patch management processes should be prioritized to ensure that all affected systems receive security updates as soon as vendor patches become available. The vulnerability's public disclosure necessitates immediate action to prevent widespread exploitation across vulnerable installations. Proper security configuration of web servers and application environments should also be verified to ensure that uploaded files are not directly executable and that appropriate permissions are enforced. Regular security audits and code reviews should be implemented to identify and remediate similar vulnerabilities before they can be exploited by malicious actors. The remediation process should include not just fixing the immediate vulnerability but also addressing the underlying architectural and development practices that allowed such a critical flaw to exist in the first place.