CVE-2020-0069: Autopsy of the Most Stable MediaTek Rootkit

In March 2020, Google patched a critical vulnerability affecting many MediaTek based devices. This vulnerability had been known by MediaTek since April 2019, and later exploited in the wild! In this post, we give some details about this vulnerability and see how we can use it to achieve kernel memory reads and writes.

more ...

No Tears, No Fears

Cappsule was released a few weeks ago and we're happy of the positive attention received. However, relying on a custom hypervisor make its usage quite difficult across various distros. This blogpost explains how the same goals can be achieved on Linux with usual software. Impatient readers can directly checkout NoFear's GitHub.

more ...

Xen exploitation part 1: XSA-105, from nobody to root

This blog post describes the exploitation of Xen Security Advisory 105 (XSA-105) (CVE-2014-7155). This post explains the environment setup and shows the development of a fully working exploit on Linux 4.4.5.

more ...

A glimpse of ext4 filesystem-level encryption

Linux 4.1 has arrived with a new feature for its popular ext4 filesystem: filesystem-level encryption!

more ...