Zranitelnost CVE-2024-4367 v PDF.js (Firefox < 126) (diskuse)

[X]

PDF.js runs under the origin resource:pdf.js. This prevents access to local files, but it is slightly more privileged in other aspects. For example, it is possible to invoke a file download (through a dialog), even to “download” arbitrary file: URLs.

simple workaround is to set the PDF.js setting isEvalSupported to false. This will disable the vulnerable code-path. If you have a strict content-security policy (disabling the use of eval and the Function constructor), the vulnerability is also not reachable