Tag hacking

InfoSec Week 19, 2018

There is a first ransomware which is taking advantage of a new Process Doppelgänging fileless code injection technique. Working on all modern versions of Microsoft Windows, since Vista. This variant of a known SynAck ransomware is using NTFS transactions to launch a malicious process by replacing the memory of a legitimate process.

Security researchers from the Dutch information security company Computes has found that some Volkswagen and Audi cars are vulnerable to remote hacking. They were able to exploit vehicle infotainment systems. The possible attackers could track car location as well as listen to the conversations in a car.

Twitter found a bug that stored user passwords unmasked in an internal log, there is no indication of a breach, but all Twitter users should change their passwords.

There is a breakthrough cryptographic attack on 5-round AES using only 2^22 (previous best was 2^32) presented at CRYPTO 2018. It is joint work of Nathan Keller, Achiya Bar On, Orr Dunkelman, Eyal Ronen and Adi Shamir. This kind of attack is good when evaluating the security of a cipher, it does not have any real world implication as the AES is using at least 10 rounds in production implementations.

Bug hunter which found multiple vulnerabilities in the 7-zip software used by anti-virus vendors wrote an blog on how to exploit one of such bugs. Interesting read.

The 360 Core Security Division response team detected an APT attack exploiting a 0-day vulnerability and captured the world’s first malicious sample that uses a browser 0-day vulnerability (CVE-2018-8174). It is a remote code execution vulnerability of Windows VBScript engine and affects the latest version of Internet Explorer.
Microsoft patched this vulnerability few days ago and credited Chinese researchers.

Source code of TreasureHunter Point-of-Sale malware leaks online.

The ssh-decorator package from Python pip had an obvious backdoor (sending ip+login+password to ssh-decorate[.]cf in cleartext HTTP).

Luke Picciau wrote about his experience with Matrix and it's Riot messenger for one year.

There is a first official version 1.0 RC of Briar for Android.
Briar is an open-source End-to-end encrypted Bluetooth / WiFi / Tor based mesh-networking (decentralized) messaging application.

The Infection Monkey is an open source security tool for testing a data center's resiliency to perimeter breaches and internal server infection.

InfoSec Week 13, 2018

The city of Atlanta government has become the victim of a ransomware attack. The ransomware message demanding a payment of $6,800 to unlock each computer or $51,000 to provide all the keys for affected systems. Employees were told to turn off their computers.

The academic researchers have discovered a new side-channel attack method called BranchScope that can be launched against devices with Intel processors and demonstrated it against an SGX enclave. The patches released in response to the Spectre and Meltdown vulnerabilities might not prevent these types of attacks.

Good insight into the ransomware business and how it operates, how it transfers Bitcoin funds, with data gathered over a period of two years.
The paper is named "Tracking Ransomware End-to-end"

Mozilla has created a Facebook Container extension for Firefox, which should enable users to protect their online habits by sandboxing Facebook webpage.

Interesting article about the North Korean army of hackers operating abroad with the mission to earn money by any means necessary.

Unified logs in the MacOS High Sierra (up to 10.13.3) show the plain text password for APFS encrypted external volumes via disk utility application.

SophosLabs researchers analyzed a new Android malware which is pretending to he a legitimate QR reader application, but actually is monetizing users by showing them a flood of full-screen advertisements. More than 500k apps were installed.

Brian Krebs analyzed the social network behind the recently famous Coinhive javascript cryptocurrency mining business.

CloudFlare published a Merkle Town dashboard, Certificate Transparency logs visualization tool.

Facebook is tracking users' phone call information via their Android Messenger application.

There are multiple critical vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software.

New version (4.0) of the most secure operating system on the planet - Qubes OS was released.

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 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.