Multiple Web Browser Image-Based Information Leak

Multiple web browsers, including Mozilla Firefox 2.0.0.11, Opera 9.50 beta, Apple Safari 3.0.4 and Konqueror 3.5.8, contain unsafe image loading code. Exploiting the code leads to echoing a small, random, heap memory area on the screen - as image data. In case of the web browsers with fully implemented HTML5 tag functionality (Firefox and Opera), the image data can be collected, and sent to a remote server using a simple JavaScript script.