CVE-2024-58281
Summary
CVE-2024-58281 is a high-severity remote code execution (RCE) vulnerability affecting Dotclear version 2.29. This vulnerability allows authenticated attackers to upload malicious PHP files through the media upload functionality, potentially leading to complete system compromise.
Technical Details
CVE-2024-58281 stems from insufficient input validation during the media upload process in Dotclear 2.29. An authenticated attacker with the necessary privileges can bypass existing security measures and upload a specially crafted PHP file. This file, often a PHP shell, can then be accessed via a web browser, allowing the attacker to execute arbitrary commands on the server. The vulnerability exists because the application fails to adequately sanitize uploaded files, allowing the execution of malicious code embedded within them. The attacker can craft a PHP shell containing a command execution form, which, when accessed, allows them to run commands with the privileges of the web server user.
Successful exploitation requires authentication to the Dotclear application and the ability to upload media files. The attacker must also know or be able to guess the location of the uploaded file on the server.
Affected Products and Versions
- Dotclear 2.29
Impact Assessment
Successful exploitation of CVE-2024-58281 can have severe consequences, including:
- Complete System Compromise: Attackers can gain full control of the affected server.
- Data Breach: Sensitive data stored on the server can be accessed and exfiltrated.
- Malware Deployment: The compromised server can be used to host and distribute malware.
- Denial of Service (DoS): The server can be rendered unavailable to legitimate users.
- Lateral Movement: Attackers can use the compromised server to gain access to other systems on the network.
Remediation
Immediate Actions
- Upgrade Dotclear: Upgrade to a patched version of Dotclear that addresses this vulnerability. Check the official Dotclear website for updates.
- Monitor System Logs: Closely monitor system logs for suspicious activity, such as unauthorized file uploads or command executions.
- Restrict File Upload Permissions: Review and restrict file upload permissions to only authorized users.
Long-term Solutions
- Implement Robust Input Validation: Implement strict input validation and sanitization for all file uploads.
- Regular Security Audits: Conduct regular security audits to identify and address potential vulnerabilities.
- Web Application Firewall (WAF): Deploy a web application firewall to detect and block malicious requests.
References
Detection & Scanning
This vulnerability can be detected by analyzing web server logs for suspicious file uploads and command executions. Security scanners can also be used to identify vulnerable Dotclear installations.
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