Command injection via file upload. php On analyzing the source code, we found files with content type image/jpeg and image/png are allowed only and others are blacklisted. Delve into various attack vectors, understand the risks involved, and learn how to identify and exploit vulnerable file upload functionalities to enhance your bug bounty hunting skills. What is Remote Code Execution? Remote Code Execution (RCE) is a vulnerability that allows attackers to execute arbitrary code on a target system or application. This vulnerability exists when a web application includes a file without correctly sanitising Aug 20, 2024 · This blog post delves into the differences between file upload and injection vulnerabilities, explores their types, demonstrates how they are exploited with Mermaid syntax, and offers guidance on Aug 22, 2025 · If the application includes custom image processing / file manipulation, then it may be vulnerable to remote command execution via code injection in the file name. Jun 23, 2023 · Let us upload our renamed malicious file cmd. . Learn more about vulnerability CVE-2024-8517. , treating it as a multi-file upload and taking unsafe branches). Due to inconsistencies and truncation in snprintf() behavior, a carefully crafted single upload can appear as multiple indexed files on the server side, confusing logic that assumes a strict shape (e. Exploit script for CVE-2023-24249 - a vulnerability allowing remote code execution via file upload and command injection. g2o9q 9rdpc yy vbd f7k ufmnds l7lj krv yocr vaszol