By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script.
WebRTC used the memory address of a class instance as a connection identifier. Unfortunately, this value is often transmitted to the peer, which allows bypassing ASLR.
Crafted media files could lead to a race in texture caches, resulting in a use-after-free, memory corruption, and a potentially exploitable crash.
Given an installed malicious file picker application, an attacker was able to overwrite local files and thus overwrite Firefox settings (but not access the previous profile).
Note: This issue only affected Firefox for Android. Other operating systems are unaffected.
Given an installed malicious file picker application, an attacker was able to steal and upload local files of their choosing, regardless of the actually files picked.
Note: This issue only affected Firefox for Android. Other operating systems are unaffected.
Mozilla developers Jason Kratzer and Luke Wagner reported memory safety bugs present in Firefox 78 and Firefox ESR 68.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
Vulmon