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CVE-2024-53691 is a link following (symlink traversal) vulnerability affecting multiple QNAP operating system versions, including QTS and QuTS hero. The vulnerability allows remote attackers who have already obtained user access to traverse the file system beyond intended boundaries by exploiting improper handling of symbolic links. This could enable access to files and directories outside the permitted scope, potentially exposing sensitive data or system files.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a working exploit for CVE-2024-53691, a vulnerability in QNAP QTS 5.1.x and QuTS hero h5.1.x that allows a low-privileged user to achieve remote code execution as root. The exploit leverages a symlink attack via a ZIP file upload, abusing the encrypt/decrypt functionality to overwrite the 'restore_config.cgi' script with attacker-controlled shell commands. The main exploit script (rce.py) automates the attack: it logs in as a regular user, uploads a malicious ZIP containing a symlink, extracts it, uploads a payload, encrypts and renames the payload to match the symlink, then decrypts it to overwrite the target CGI script. Finally, it triggers the overwritten script via a web request, resulting in a reverse shell to the attacker's machine. The repository consists of a detailed README.md explaining the vulnerability and manual exploitation steps, and a Python script (rce.py) that automates the entire process. The exploit targets QNAP NAS devices accessible over the network and requires valid user credentials with file upload permissions.
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