Security bypass of PDF.js checks using iframes
- October 29, 2013
- Cody Crews
- Firefox, Firefox ESR
- Fixed in
- Firefox 25
- Firefox ESR 24.1
Security researcher Cody Crews discovered a method to append
iframe into an embedded PDF object rendered with the chrome
PDF.js. This can used to bypass security restrictions to
load local or chrome privileged files and objects within the embedded PDF
object. This can lead to information disclosure of local system files.
In general this flaw cannot be exploited through email in the Thunderbird and Seamonkey products because scripting is disabled, but is potentially a risk in browser or browser-like contexts.