CVE-2023-38146: Arbitrary Code Execution via Windows Themes
This is a fun bug I found while poking around at weird Windows file formats. It's a kind of classic Windows style vulnerability featuring broken signing, sketchy DLL loads, file races, cab files, and Mark-of-the-Web silliness. It was also my first experience submitting to the MSRC Windows bug bounty since leaving Microsoft in April of 2022.
The Sonar Research team discovered critical code vulnerabilities in Proton Mail, Skiff and Tutanota. This post covers the technical details of the XSS vulnerability in Proton Mail.
CVE-2023-38408: Remote Code Execution in OpenSSH’s forwarded ssh-agent
The Qualys Threat Research Unit (TRU) has discovered a remote code execution vulnerability in OpenSSH's forwarded ssh-agent. This vulnerability allows a remote…
BlackLotus UEFI Bootkit Source Code Leaked on GitHub
The source code for the BlackLotus UEFI bootkit has been shared publicly on GitHub, albeit with several modifications compared to the original malware. Designed specifically for Windows, the bootkit emerged on hacker forums in October last year, being advertised with APT-level capabilities such as secure boot and user access control (UAC) bypass and the ability to disable security applications and defense mechanisms on victim systems.
Process Mockingjay: Echoing RWX In Userland To Achieve Code Execution
Our research team is committed to continuously identifying potential security vulnerabilities and techniques that threat actors may exploit to bypass existing security controls. In this blog post, our team is detailing on a comprehensive research specifically focused on process injection techniques utilized by attackers to deceive robust security products integrated into the security stack, such as EDRs and XDRs. Throughout the blog post, we will delve into various process injection techniques e