To exploit this vulnerability, an attacker must first create a malicious PDF document that exploits the use-after-free issue in the media player API. Once crafted, the attacker must then trick the user into opening the malicious PDF file. This can be done through various social engineering techniques, such as sending the document as an email attachment or embedding it in a website.
Moreover, if the user visits a website containing the malicious payload with an enabled browser plugin extension, the vulnerability can also be exploited without direct interaction with the PDF document.
This code snippet demonstrates a simple malicious PDF manipulation
// Create a vulnerable PDF using Foxit PDF Reader's media player API var doc = app.createDocument(); var player = doc.createMediaPlayer(); // Trigger the use-after-free vulnerability by misusing the API doc.removeObject(player); player.setPlayState(1);
At the time of writing, there have been no reports of any in-the-wild attacks using this vulnerability. However, to protect against this exploit, users are advised to update to a patched version of Foxit PDF Reader immediately. Additionally, users should refrain from opening unknown or suspicious PDF documents and be cautious when visiting unfamiliar websites.
1. Foxit Software's Security Bulletin: https://www.foxit.com/support/security-bulletins/
2. CVE details page: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-37332
Published on: 11/21/2022 16:15:00 UTC
Last modified on: 11/22/2022 19:00:00 UTC