The exploit for the bug I presented last March at SyScan360 is today one year old so I decided to release it. I wasn’t sure if I should do it or not since it can be used in the wild but Google Project Zero also released a working version so it doesn’t really make a difference. I’m also publishing here the final version of the slides that differ slightly from the version made available at the corporate blog....
Nothing 😃. HackingTeam was deeply hacked in July 2015 and most of their data was spilled into public hands, including source code for all their sofware and also some 0day exploits. This was an epic hack that shown us their crap internal security but more important than that, their was of doing things and internal and external discussions, since using PGP was too much of an annoyance for these guys (Human biases are a royal pain in the ass, I know!...
Two days ago El Capitan 10.11.3 was released together with security updates for Yosemite and Mavericks. The bulletin available here describes nine security issues, most of them related to kernel or IOKit drivers. The last security issue is about a memory corruption issue on syslog that could lead to arbitratry code execution with root privileges. I was quite curious about this bug mostly because it involved syslogd, a logging daemon....
Last month Patrick Wardle presented Exposing Gatekeeper at VB2015 Prague. The core of the presentation deals with Gatekeeper bypasses originating in the fact that Gatekeeper only verifies the code signatures of the main binary and not of any linked libraries/frameworks/bundles. This means it is possible to run unsigned code using dynamic library hijacking techniques also presented by Patrick in code that should be protected by Gatekeeper. His exploit uses an Apple code signed application that is vulnerable to dylib hijacking and is modified to run unsigned code when downloaded from the Internet....
Finally back home from China and Japan tour, so it’s time to finally release the updated slides about EFI Monsters. After Secuinside I updated them a bit, fixing stuff I wasn’t happy with and adding some new content. The updated version was first presented at 44CON London. I had serious reservations about going to the UK (not even in transit!) but Steve Lord and Adrian charm convinced me to give it a try....