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CVE-2024-8743 is a vulnerability in the Bit File Manager WordPress plugin (versions up to and including 6.5.7) that allows authenticated users with Subscriber-level access (and granted permissions by an administrator) to upload .css and .js files due to insufficient file type validation. This can result in the execution of arbitrary JavaScript code via stored XSS if the uploaded files are accessed in a browser context.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a functional proof-of-concept exploit for CVE-2024-8743, targeting the Bit File Manager WordPress plugin (<=6.5.7). The exploit demonstrates a multi-stage attack: (1) an authenticated attacker (subscriber+) uploads a malicious CSS file via the vulnerable plugin, (2) the CSS payload exfiltrates a CSRF nonce from the admin's browser to the attacker's Flask web server, and (3) the attacker uses the leaked nonce to perform a CSRF attack that creates a new admin user, achieving privilege escalation. The repository contains two main Python scripts: 'generatepayload.py' (for crafting the CSS exfiltration payload) and 'poc.py' (the main exploit logic, including web server and attack orchestration). Two HTML templates are used for the nonce exfiltration and CSRF stages. The exploit requires the attacker to have valid subscriber credentials and the ability to run a web server accessible by the victim admin. The code is operational and demonstrates a real privilege escalation chain via web-based attack vectors.
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