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Ghostbuster

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A Principled Plan to Prevent Transient Execution Attacks

Ghostbuster is a research program to stop advanced “transient execution attacks”, which by themselves already rank among the most advanced attacks ever—by finding vulnerable code fragments, analyzing them for exploitability, and i... see more

31/12/2029

STICHTING VU

2M€

Project Budget: 2M€

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STICHTING VU No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

PARTICIPATION DEPralty Sin fecha límite de participación.

Financing granted El organismo HORIZON EUROPE notifico la concesión del proyecto The day 2025-01-01

ERC-2023-ADG: ERC ADVANCED GRANTS Scope:Objectives

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Project duration: 59 months Date Start: 2025-01-01
End date: 2029-12-31

Project leader

STICHTING VU No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Project Budget 2M€

participation deadline Sin fecha límite de participación.

Project description Ghostbuster is a research program to stop advanced “transient execution attacks”, which by themselves already rank among the most advanced attacks ever—by finding vulnerable code fragments, analyzing them for exploitability, and injecting mitigations where needed. The vulnerabilities such as Spectre, Meltdown and others originate in vulnerable hardware and allow data leakage across all security boundaries. Recently, my team and I showed that even more advanced attacks exist by combining transient execution with traditional software exploitation. Today, we have no way of even detecting these hybrid attacks, let alone stop them. While we keep finding new variants, vendors have indicated that they cannot fix them all, as it would cripple performance. The hope is that developers identify and harden vulnerable code snippets (e.g., with instructions that stop transient execution). Unfortunately, finding vulnerable snippets is hard, beyond the abilities of top programmers, and even more so for the new hybrid attacks. Can it be done automatically?The challenge is daunting and involves all interaction between the code and a myriad of obscure CPU resources, requiring expertise in hardware, operating systems, fuzzing, program analysis, etc. State-of-the-art (and limited) tools do not even aim for mitigation and simply report potential issues—with many false positives and negatives. Unlike existing solutions that detect the snippets through pattern matching, Ghostbuster takes a principled approach and considers the fundamental conditions enabling attacks—without resorting to, say, symbolic execution, which scales poorly to large programs. It models the fundamental conditions of (steps of) an attack in terms of control + dataflow properties and translates the models into detectors. After detecting the code that looks vulnerable, it runs additional (possibly heavy-weight) exploitability analysis and, if need be, mitigates the issue by removing some of the enabling conditions

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