Infiltrate Security Conference OPEN CFP

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Bypassing Mitigations by Attacking JIT Server in Microsoft Edge

Exploit Development
45

With the Windows 10 Creators Update, to the shock and horror of exploit writers everywhere, Microsoft introduced Arbitrary Code Guard (ACG). ACG’s goal is to make it impossible to allocate new executable memory or modify existing executable memory in the protected process. Additionally, to be able to support just-in-time (JIT) compilation in Chakra (Edge’s JavaScript engine), Microsoft took out JIT into a separate process. But just how useful and how foolproof ACG currently is? In this talk we’ll attempt to answer those questions, with a special focus on Chakra and the JIT server. We’ll examine the attack surface of the JIT server and show examples of several types of issues in JIT server and Chakra that could lead to CFG and ACG mitigation bypasses.

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We are pleased to announce the Call For Papers for INFILTRATE 2018 is now open. If you would like to present and have an offense-focused-fresh-content presentation, please submit an abstract, Bio and headshot to cfp@immunityinc.com. This information will be included on our Open CFP site, here, where the public can vote on which presentations they are most interested in seeing at INFILTRATE. Call for papers will close on December 14th, 2017. Shortly after this date, the winning speakers will be notified.

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