InfoSec Week 1, 2019

Let's Encrypt recapitulated the last year in the operation of their ACME based certification authority, and summarized the challenges that they will work on in 2019.
They intend to deploy multi-perspective validation, checking multiple distinct Autonomous Systems for domain validation, preventing potential BGP hijacks. They also plan to run own Certificate Transparency (CT) log.

According to the consultant Nathan Ziehnert, "CenturyLink 50 hour outage at 15 datacenters across the US — impacting cloud, DSL, and 911 services was caused by a single network card sending bad packets."

Great blog by Artem Dinaburg, where he is resurrecting 30 years old fuzzing techniques from the famous research papers to run them on on the current Linux distro. Successfully.

An article by Wired about the fake murder for hire services on dark web and a freelance security researcher that took them down. As it turned out, some clients killed their targets themselves.

Multiple newspaper publishers in the US were hit by a ransomware attack, delaying their operations.

The European Union starts running bug bounties on Free and Open Source Software.

Foxit Readers' proof of concept exploit for the Use-After-Free vulnerability (CVE-2018-14442) was published on Github.

Attacker launched multiple servers that return an error message to the connected Electrum clients, which then turn them into a fake update prompt linking to a malware.

Adam Langley published blog about the zero-knowledge attestation when using FIDO based authentication. It could prevent a single-vendor policy some sites started to require.

Interesting blog post by Wouter Castryck on "CSIDH: post-quantum key exchange using isogeny-based group actions".

The security researcher Bruno Keith published a a proof of concept for a remote code execution vulnerability in Microsoft Edge browser (CVE-2018-8629).

If you are interested in older car hacking/tuning, check this article about overcoming the speed limitation on an old Japanese Subaru Impreza STi.

Jonathan “smuggler” Logan published study on the future of black markets and cryptoanarchy named "Dropgangs, or the future of darknet markets".

InfoSec Week 41, 2017

SensePost researchers found out that the Microsoft Office home page is able to compromise user by loading ActiveX component with VBscript.

Microsoft security department were contacted by a worried user that found 2 seemingly identical µTorrent executables, with valid digital signatures, but different cryptographic hashes. As they have found out there were marketing campaign identifier in "a text file inside a ZIP file inside a PE file, BASE64 encoded and injected in the digital signature of a PE file.". Quite complicated...

A vulnerability (CVE-2017-15361) in generation of RSA keys used by a software library adopted in cryptographic smartcards, security tokens and other secure hardware chips manufactured by Infineon Technologies AG allows for a practical factorization attack, in which the attacker computes the private part of an RSA key. The attack is feasible for commonly used key lengths, including 1024 and 2048 bits, and affects chips manufactured as early as 2012, that are now commonplace.

The rolling code in electronic keys for Subaru Forester (2009) and some other models are not random. Keys can be cloned, cars unlocked, with the hardware costs of $25. https://github.com/tomwimmenhove/subarufobrob

Microsoft reintroduced a Pool-based overflow kernel vulnerability on Windows 10 x64 (RS2) Creators Update which was originally patched in 2016. The guys wrote an exploit with rich explanation.

Blog about the "Exploding Git Repositories" that will crash your git process.

MediaTek and Broadcom Wi-Fi AP drivers have a weak random number generator, allowing prediction of Group Temporal Key. Practical attack requires a LOT of handshakes.

How to hide a process from SysInternals without the admin rights, but with the privilege escalation.

Adam Langley blogged about the low level testing of the FIDO U2F security keys, namely Yubico, VASCO SecureClick, Feitian ePass, Thetis, U2F Zero, KEY-ID / HyperFIDO.

Good introductory blog about the (in)security of Intel Boot Guard. The author also published source code of the UEFITool with visual validation of Intel Boot Guard coverage.
https://medium.com/@matrosov/bypass-intel-boot-guard-cc05edfca3a9 https://github.com/LongSoft/UEFITool

A script that tests if access points are affected by Key Reinstallation Attacks (CVE-2017-13082) was published on a GitHub by researcher Mathy Vanhoef.

The Miscreant is a Misuse-resistant symmetric encryption library supporting the AES-SIV (RFC 5297) and CHAIN/STREAM constructions.