We discovered a series of incidents where the credit card skimming attack Magecart was used to hit the booking websites of chain-brand hotels — the second time we’ve seen a Magecart threat actor directly hit ecommerce service providers instead of going for individual stores or third-party supply chains.Read More
We looked into the security implications of the changing banking paradigm with PSD2 in place. Our research highlights the current and new risks that the financial industry will have to defend against, and predict how cybercriminals will abuse and attack Open Banking.Read More
Skidmap, a Linux malware that we recently stumbled upon, demonstrates the increasing complexity of recent cryptocurrency-mining threats. This malware is notable because of the way it loads malicious kernel modules to keep its cryptocurrency mining operations under the radar.
These kernel-mode rootkits are not only more difficult to detect compared to its user-mode counterparts — attackers can also use them to gain unfettered access to the affected system. A case in point: the way Skidmap can also set up a secret master password that gives it access to any user account in the system. Conversely, given that many of Skidmap’s routines require root access, the attack vector that Skidmap uses — whether through exploits, misconfigurations, or exposure to the internet — are most likely the same ones that provide the attacker root or administrative access to the system.Read More
We’re always eager for new research and learning opportunities, but this time, serendipitously, the opportunity found us. At the closing party of the Hack In The Box Amsterdam conference — where we presented our industrial radio research and ran a CTS contest — we were given LED wristbands to wear. They’re flashing wristbands meant to enhance the experience of an event, party, or show. At the beginning, we were not interested in the security impact; we just wanted to learn. Later on, however, we discovered that the RF link was used to transport an industrial protocol: DMX512 (Digital MultipleX 512), the same protocol used to pilot large light exhibitions.Read More
Last June, I disclosed a use-after-free (UAF) vulnerability in Internet Explorer (IE) to Microsoft. It was rated as critical, designated as CVE-2019-1208, and then addressed in Microsoft’s September Patch Tuesday. I discovered this flaw through BinDiff (a binary code analysis tool) and wrote a proof of concept (PoC) showing how it can be fully and consistently exploited in Windows 10 RS5.
A more in-depth analysis of this vulnerability is in this technical brief. As mentioned, CVE-2019-1208 is a UAF vulnerability. This class of security flaws can corrupt valid data, crash a process, and, depending on when it is triggered, can enable an attacker to execute arbitrary or remote code. In the case of CVE-2019-1208, an attacker successfully exploiting this vulnerability could gain the same rights as the current user in the system. If the current user has administrative privileges, the attacker can hijack the affected system — from installing or uninstalling programs and viewing and modifying data to creating user accounts with full privileges.Read More