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Recent works also showed the only way to extract the VMK from the TPM was physical access like probing the Low Pin Count (LPC) bus or TPM pins. Most security researchers concluded the VMK sealed by the TPM was safe. It has hidden behind the TPMs because the TPM protected the VMK of BitLocker with sealing and unsealing functions.
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Microsoft Windows has used both types of TPMs to protect the Volume Master Key (VMK) of their disk encryption software, BitLocker.īitLocker's TPM feature has not been analyzed in detail. There are two typical types of TPMs, hardware-based discrete TPM (dTPM) and firmware-based TPM (fTPM). It has been widely deployed in commercial devices to protect secret data and ensure the trustworthiness of a system. Trusted Platform Module (TPM) is a tamper-resistant security module.
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USENIX Security 2018: A Bad Dream: Subverting Trusted Platform Module While You Are Sleeping. Black Hat Asia 2019: Finally, I Can Sleep Tonight: Catching Sleep Mode Vulnerabilities of the TPM with the Napper. Black Hat Europe 2019: BitLeaker: Subverting BitLocker with One Vulnerability. Presentation, Paper, and DemoīitLeaker and related materials were introduced at security conferences below. If you want the detailed information about CVE-2018-6622 and a vulnerability checking tool, please read our USENIX paper, A Bad Dream: Subverting Trusted Platform Module While You Are Sleeping and Black Hat Asia presentation, Finally, I Can Sleep Tonight: Catching Sleep Mode Vulnerabilities of the TPM with Napper. They are related to the S3 sleeping state of Advanced Configuration and Power Interface (ACPI) and can reset the TPMs. BitLeaker uses the TPM vulnerability, CVE-2018-6622 for a discrete TPM and related vulnerability for a firmware TPM. ░ ░░▒░▒] ░░▒░▒░░▒▒░]░░▒ ▒▒]░░░░ ░ ░░j░░░▒░ ░ !īitLeaker v1.0 for decrypting BitLocker with One VulnerabilityīitLeaker is a new tool for extracting the VMK and mounting a BitLocker-locked partition.
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