Mike @PinToStart
Security for MSRC. RPISEC alum Joined May 2016-
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File system redirection has long been a tool for attackers seeking privilege escalation. RedirectionGuard, a new Windows mitigation, is designed to block malicious junction-based redirection by default, strengthening system security. Key Features of RedirectionGuard: •Blocks junction traversal only when followed by an opted-in process and when created by a non-admin user. •Stores privilege metadata in an admin-only alternate data stream to verify junction trustworthiness. •Already enabled in Windows Insider builds for User Profile Service, AppX Deployment Service, and Installer Service, historically among the most vulnerable components. Learn more in our new blog by Mike Macelletti (@pintostart), Senior Security Researcher, Microsoft: msft.it/6018SIil0 Many thanks to Georgios Baltas (@gebaltas) and James Forshaw (@tiraniddo) for their contributions.
@galdeleon Great blog post, and you're right that it isn't enabled for any processes on Windows 10 yet (keep an eye out next month though). But if you scan on Windows 11, and better yet an insider build, you will see a different story.
Back by popular demand! This time I wrote one of the pwnables.
It’s almost time for Hack The Vote 2020 and registration is now live! Sign up for RPISEC's quadrennial CTF at the link below - our registration page is available in English, Spanish and AT&T hackthe.vote
Registration for Hack the Vote CTF now open: pwn.voting
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