A look at the new Fuchsia Operating System.

Ansible is an open-source software automating configuration management and software deployment. Ansible is used in Quarkslab to manage our infrastructure and in our product Irma. In order to have an idea of the security of Ansible, we conducted a security assessment. This blogpost presents our findings.

In the context of the Inter-CESTI 2019 challenge, we "accidentally" found a timing difference disclosing the length of a PIN handled via the standard OwnerPIN.check JavaCard API. Here is the story.

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.

This blog post presents a vulnerability which affects the widely installed Android web browser.

On September 2018, FreeBSD published the security advisory FreeBSD-SA-18:12, fixing a kernel memory disclosure vulnerability affecting all the supported versions of this operating system.

Broadcom is one of the major vendors of wireless devices worldwide. Since these chips are so widespread they constitute a high value target to attackers and any vulnerability found in them should be considered to pose high risk. In this blog post I provide an account of my internship at Quarkslab which included obtaining, reversing and fuzzing the firmware, and finding a few new vulnerabilities.

Earlier this year, on March 2018, we published a blog post detailing 2 vulnerabilities in the Android Bluetooth stack, which were independently discovered by Quarkslab, but were fixed in the March 2018 Android Security Bulletin while we were in the process of reporting them to Google.

This year has been very fruitful for Quarkslab with lots of research, new challenges, newcomers, open source success. It is now a tradition to look back at what we have done during a small conference named “Quarks in the Shell” or just "QITS", where we share the year experience with our customers, partners and friends. QITS meeting is one of the output channels for our research work that is also reflected in internal tools, our open-source projects (e.g. Triton, LIEF and QBDI), and our products (IRMA Enterprise and Epona).

The March 2018 Android Security Bulletin includes fixes for 10 vulnerabilities in its Bluetooth stack, some of which were also independently discovered by Quarkslab, but were fixed while we were in the process of reporting them to Google (spoiler alert: we have reported a few more new Bluetooth vulnerabilities to the Android team — we'll disclose the details after they get fixed). This blogpost shows technical details for a couple of these fixed bugs, which can be triggered remotely and without any user interaction, as well as proof-of-concept code for them.