Replay Protected Memory Block (RPMB) protocol does not adequately defend against replay attacks

ronjor · Nov 11, 2020

Original Release Date: 2020-11-10 | Last Revised: 2020-11-10

Description
The RPMB protocol "...enables a device to store data in a small, specific area that is authenticated and protected against replay attack." RPMB is most commonly found in mobile phones and tablets using flash storage technology such as eMMC, UFS, and NVMe. The RPMB protocol allows an attacker to replay stale write failure messages and write commands, leading to state confusion between a trusted component and the contents of an RPMB area. Additional details are available in Replay Attack Vulnerabilities in RPMB Protocol Applications.
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Replay Protected Memory Block (RPMB) protocol does not adequately defend against replay attacks

ronjor Global Moderator

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Replay Protected Memory Block (RPMB) protocol does not adequately defend against replay attacks

ronjor Global Moderator

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