Tag hacking

InfoSec Week 4, 2018

Electron applications designed to run on Windows that register themselves as the default handler for a protocol, like Skype, Slack and others, are vulnerable to the remote code execution vulnerability.

Dutch intelligence service AIVD provided the FBI with important information regarding Russian interference with the American elections. They have following the Cozy Bear APT for years.

Good blog about the exploitation of the Intel Management Engine 11 vulnerabilities. Researchers Mark Ermolov and Maxim Goryachy were able to debug and analyse most of the Intel ME processes.

It's possible to bypass the Cloudflare protection by scanning internet for misconfigured customers' servers.

It is possible for an unauthenticated attacker in the LAN network to achieve remote code execution (CVE-2018-5999) in the AsusWRT router as the root user.

The Tinder dating application is not using encryption when accessing data on a backend server. Your naked photos could be seen by a waitress in a restaurant. The geeky one.

Oracle has released patches for ten vulnerabilities in VirtualBox, which allows guest to host virtual machine escape.

The guy was able to obtain TLS certificates from the Let's Encrypt certification authority for domains that he does not own, due to the TLS-SNI-01 challenge workflow in a cloud environment. Shared hosting providers like Heroku, AWS CloudFront affected.

Blog by Joanna Rutkowska on a future Qubes Air operating system architecture roadmap. They want to provide compartmentalized secure Qubes OS as a service.

There is a cryptographic analysis of the WireGuard protocol. WireGuard is a layer 3 replacement for the IPsec, OpenVPN solutions. Interesting project.

Nice introduction on how to fuzz TCP servers by Robert Swiecki.

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 ĀµTorrent 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.