webPromedium

DocuVault — Stored XSS via Malicious PDF (CVE-2024-4367)

hackadvisor

Task: Document sharing platform with in-browser PDF rendering via pdf.js 4.1.392, admin bot reviews shared documents. Solution: CVE-2024-4367 — inject JavaScript via malicious FontMatrix string in PDF font dictionary, exfiltrate admin cookie containing flag.

xss javascript stored_xss pdf express admin_bot pdfjs cve_2024_4367 font_injection truetype

admin_bot_cookie_exfiltrationhoneypot_flag_detectioncve_2024_4367_pdfjs_fontmatrix_injectiontruetype_unitsperem_zero_bypasstext_rendering_mode_add_to_pathstored_xss_via_pdf_uploadinteract_server_path_exfiltration

$ ls tags/ techniques/

xss javascript stored_xss pdf express admin_bot pdfjs cve_2024_4367 font_injection truetype

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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