📄 phpMyFAQ 3.2.10 Unintended File Download

# Exploit Title: phpMyFAQ v3.2.10 - Unintended File Download Triggered by Embedded Frames
    # Date: 13 Dec 2024
    # Exploit Author: George Chen
    # Vendor Homepage: https://github.com/thorsten/phpMyFAQ/
    # Software Link: https://github.com/thorsten/phpMyFAQ/
    # Version: v3.2.10
    # Tested on: Mac, Win
    # CVE : CVE-2024–55889
    
    
    *Summary*
    A vulnerability exists in the FAQ Record component of
    https://github.com/thorsten/phpMyFAQ v3.2.10 where a privileged attacker
    can trigger a file download on a victim’s machine upon page visit by
    embedding it in an <iframe> element without user interaction or explicit
    consent.
    
    *Details*
    In http://localhost/admin/index.php?action=editentry&id=20&lang=en, where a
    FAQ record is either created or edited, an attacker can insert an iframe,
    as “source code”, pointing to a prior “malicious” attachment that the
    attacker has uploaded via FAQ “new attachment” upload, such that any page
    visits to this FAQ will trigger an automated download (from the edit
    screen, download is automated; from the faq page view as a normal user,
    depending on the browser, a pop up confirmation may be presented before the
    actual download. Firebox browser, for instance, does not require any
    interactions).
    
    [image: image.png]
    
    *PoC*
    
       1. create a new FAQ record and upload a “malicious” file — in my case, I
       uploaded an eicar file. Take note of the uri, ie
       “index.php?action=attachment&id=2”
       2. in the FAQ record, insert a “source code” blob using the “< >” button
       3. insert in the following snippet and save FAQ record:
        <p><iframe src="index.php?action=attachment&id=2"></iframe></p> [image:
       image.png]
       4. Once the edit page reloads, the malicious code will be downloaded
       onto the local machine without user interaction:[image: image.png]
    
       Advisory:
       https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-m3r7-8gw7-qwvc
       Disclosure: https://geochen.medium.com/cve-2024-55889-03572ae6c35c