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CVE-2022-28382

An issue was discovered in certain Verbatim drives through 2022-03-31. Due to the use of an insecure encryption AES mode (Electronic Codebook, aka ECB), an attacker may be able to extract information even from encrypted data, for example by observing repeating byte patterns. The firmware of the USB-to-SATA bridge controller INIC-3637EN uses AES-256 with the ECB mode. This operation mode of block ciphers (e.g., AES) always encrypts identical plaintext data, in this case blocks of 16 bytes, to identical ciphertext data. For some data, for instance bitmap images, the lack of the cryptographic property called diffusion, within ECB, can leak sensitive information even in encrypted data. Thus, the use of the ECB operation mode can put the confidentiality of specific information at risk, even in an encrypted form. This affects Keypad Secure USB 3.2 Gen 1 Drive Part Number #49428, Store ‘n’ Go Secure Portable HDD GD25LK01-3637-C VER4.0, Executive Fingerprint Secure SSD GDMSFE01-INI3637-C VER1.1, and Fingerprint Secure Portable Hard Drive Part Number #53650.

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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2022-010 Product: Executive Fingerprint Secure SSD Manufacturer: Verbatim Affected Version(s): GDMSFE01-INI3637-C VER1.1 Tested Version(s): GDMSFE01-INI3637-C VER1.1 Vulnerability Type: Use of a Cryptographic Primitive with a Risky Implementation (CWE-1240) Risk Level: Low Solution Status: Open Manufacturer Notification: 2022-02-03 Solution Date: - Public Disclosure: 2022-06-08 CVE Reference: CVE-2022-28382 Author of Advisory: Matthias Deeg (SySS GmbH) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: The Verbatim Executive Fingerprint Secure SSD is a USB drive with AES 256-bit hardware encryption and a built-in fingerprint sensor for unlocking the device with previously registered fingerprints. The manufacturer describes the product as follows: “The AES 256-bit Hardware Encryption seamlessly encrypts all data on the drive in real-time. The drive is compliant with GDPR requirements as 100% of the drive is securely encrypted. The built-in fingerprint recognition system allows access for up to eight authorised users and one administrator who can access the device via a password. The SSD does not store passwords in the computer or system’s volatile memory making it far more secure than software encryption.”[1] Due to the use of an insecure encryption AES mode (Electronic Codebook), an attacker may be able to extract information even from encrypted data, for example by observing repeating byte patterns. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: When analyzing the Verbatim Executive Fingerprint Secure SSD, Matthias Deeg found out that the firmware of the USB-to-SATA bridge controller INIC-3637EN uses AES-256 with the ECB (Electronic Codebook) mode. This operation mode of block ciphers like AES encrypts identical plaintext data, in this case blocks of 16 bytes, always to identical ciphertext data. For some data, for instance bitmap images, the lack of the cryptographic property called diffusion concerning the ECB mode can leak sensitive information even in encrypted data. One famous example for this is an ECB-encrypted image of the TUX penguin, which, for instance, is referenced in the Wikipedia article about block cipher modes of operation[2] to illustrate this issue. Thus, the use of the ECB operation mode can put the confidentiality of specific information at risk, even in an encrypted form. Additionally, in attack scenarios where an attacker has short-time physical access to a Verbatim Executive Fingerprint Secure SSD, and later returns it to its legitimate owner, the attacker may be able to compromise the integrity of the stored data by exploiting the fact that the same 16-byte plaintext blocks result in the same 16-byte ciphertext blocks, by replacing specific encrypted 16-byte blocks with other ones. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): The same 16 byte long plaintext pattern was written several times to an unlocked Verbatim Executive Fingerprint Secure SSD. When the SSD was then read using another SSD enclosure, the same 16 byte long ciphertext pattern could be observed for the corresponding plaintext data. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: SySS GmbH is not aware of a solution for the described security issue. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2022-02-03: Vulnerability reported to manufacturer 2022-02-11: Vulnerability reported to manufacturer again 2022-03-07: Vulnerability reported to manufacturer again 2022-06-08: Public release of security advisory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product website for Verbatim Executive Fingerprint Secure SSD https://www.verbatim-europe.co.uk/en/prod/executive-fingerprint-secure-ssd-usb-32-gen-1–usb-c-1tb-53657/ [2] Wikipedia article about block cipher mode of operation https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Electronic_codebook_(ECB) [3] SySS Security Advisory SYSS-2022-010 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2022-010.txt [4] SySS GmbH, SySS Responsible Disclosure Policy https://www.syss.de/en/responsible-disclosure-policy ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Matthias Deeg of SySS GmbH. E-Mail: matthias.deeg (at) syss.de Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Matthias_Deeg.asc Key fingerprint = D1F0 A035 F06C E675 CDB9 0514 D9A4 BF6A 34AD 4DAB ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided “as is” and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS website. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: http://creativecommons.org/licenses/by/3.0/deed.en -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE0fCgNfBs5nXNuQUU2aS/ajStTasFAmKgQWYACgkQ2aS/ajSt Tau+kBAAifIP8IEYs96niHMd9ji0mYtXGuW/xP6+HDjY49zEp1VwlfmpGZpTiK6G WxZ7ECvcV9bWYR8d5KerOEtqwahdZ/4FWSY9IJMU8Jy2G+on5fsB9xnW4OT7i5yz tn8wv0WQkHcsGz4e/o/JzB5rpY0ptVH/a4Vr+LfIShm2R1PZGw56bZ3IZyJ8QGEz 6X+U+6VZR9vpetFbvgaZzgfMGy2v4TX90lx+ZeX/oYPJiBdfYUpzyWD+5rXTBVXo T0ArzvzBqPCNw1wF/FmGpygUjK+NBea2vKDxf7Opw72zsDbfLEKJYEWccW/5DrVf z4DO41LuRtrzwyVr4v9nxRKrb7JbnKX+lA8dmspLAm4ccI9vC5km4i1VWrGK54a9 4p09xL2Dzl6hxYE0ImRCBBJyrDfXbcOoadvkYQc4a8n34s4WfFyijCkTCxG8m5FH 3YC+gYvGuX/PCdqOvnvesDbWD9Fvx0b3mMq19MMRa180pcSAvnF5Yx9mWnFK4GX0 TwxDjDESVqZeqCvAwGrqbZlbpFd2byJu1jNavq51toNAzDkAMUTS3Yr8Dc/qs9if Oxv46aQLFBZjadVW5sC7T2ss4kikWr0GbYiSIx/iv7DjHseH3Lp+mKgFx9G0PmS3 RXl2YBvVNxt+zQDHezSbH5OqVeTH63WnsBwGYAA4ThRZY8QA5EA= =bCOj -----END PGP SIGNATURE-----

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