The following is a detailed write-up regarding the 0day vulnerabilities and security hitlists relevant to the week of January 1, 2024 through January 7, 2024 (Week 01, 2024).
This period is historically significant in cybersecurity as it coincides with the Pwn2Own Vancouver 2024 "Call for Targets" and the publication of the Q1 2024 Hitlists by major security research entities. It also marks the first active exploitation periods for vulnerabilities disclosed in late December 2023. 0day and hitlist week 01102024 work
0-day exploits refer to attacks that take advantage of a previously unknown vulnerability in a computer application, network, or hardware. The term "0-day" signifies that the exploit occurs on the same day a weakness is discovered, or even before a fix is available. This kind of exploit can be particularly devastating because the targeted software or hardware vendor may not have had any time (i.e., zero days) to develop and distribute a patch. The following is a detailed write-up regarding the
At the start of the week, a Type Confusion in the Turbofan JIT compiler (Issue 41497621) was being actively exploited in the wild. The hitlist for this 0day specifically included financial auditors and crypto wallet users. The exploit bypassed the V8 sandbox by confusing the compiler about a JSTypedArray object’s length. A simple Array.prototype.map call on a malicious website was enough to execute shellcode. What are 0-Day Exploits
The "Work" factor: Due to the complexity of crafting a reliable trigger, only APT groups (specifically TA544 and DarkHotel) were seen using this in high-value spear-phishing campaigns.
The chaos of 0day and hitlist week 01102024 work taught the industry three hard lessons:
The speed from private disclosure to mass exploitation is now under 48 hours. The "work" cannot rely on vendors to release patches. Instead, organizations need behavioral baselines. The CLFS exploit, for example, triggered unusual PsSetCreateProcessNotifyRoutine calls. If you had EDR watching for that, you didn't need a signature.
