Nytro Posted August 15, 2017 Report Posted August 15, 2017 Friday the 13 JSON Attacks Alvaro Muñoz & Oleksandr Mirosh HPE Software Security Research Introduction Security issues with deserialization of untrusted data in several programming languages have been known for many years. However, it got major attention on 2016 which will be remembered as the year of Java Deserialization apocalypse. Despite being a known attack vector since 2011, the lack of know n classes leading to arbitrary code execution in popular libraries or even the Java Runtime allowed Java Deserialization vulnerabilities fly under the radar for a long time. These classes could be used to execute arbitrary code or run arbitrary processes (remote code execution or RCE gadgets). In 2015 Frohoff and Lawrence published an RCE gadget in the Apache Commons - Collections library which was used by many applications and therefore caught many applications deserializing untrusted data off - guard. The publication of the Apache Commons - Collections gadget was followed by an explosion of new research on gadgets, defense and bypass techniques and by the hunting of vulnerable products/endpoints. Download: https://www.blackhat.com/docs/us-17/thursday/us-17-Munoz-Friday-The-13th-JSON-Attacks-wp.pdf 1 Quote
