Mozilla Foundation Security Advisory 2016-26
Memory corruption when modifying a file being read by FileReader
- Announced
- March 8, 2016
- Reporter
- Oriol
- Impact
- Moderate
- Products
- Firefox
- Fixed in
-
- Firefox 45
Description
Security researcher Oriol reported memory corruption when local files
are modified (by either the user or another program) at the same time being read using the
FileReader API. This flaw requires that input be taken from a local file in
order to be triggered and cannot be triggered by web content. This results in a
potentially exploitable crash when triggered.