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CVE-2021-46390 Detail


An access control issue in the authentication module of Lexar_F35 v1.0.34 allows attackers to access sensitive data and cause a Denial of Service (DoS). An attacker without access to securely protected data on a secure USB flash drive can bypass user authentication without having any information related to the password of the registered user. The secure USB flash drive transmits the password entered by the user to the authentication module in the drive after the user registers a password, and then the input password is compared with the registered password stored in the authentication module. Subsequently, the module returns the comparison result for the authentication decision. Therefore, an attacker can bypass password authentication by analyzing the functions that return the password verification or comparison results and manipulate the authentication result values. Accordingly, even if attackers enter an incorrect password, they can be authenticated as a legitimate user and can therefore exploit functions of the secure USB flash drive by manipulating the authentication result values.


CVSS 3.x Severity and Metrics:

Base Score:  6.8 MEDIUM
Vector:  CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/bosslabdcu/Vulnerability-Reporting/security/advisories/GHSA-fcqg-mq6w-h3fh Exploit  Third Party Advisory 
https://www.amazon.in/Lexar-LJDF35-128BNL-JumpDrive-Fingerprint-Silver/dp/B07GSMSL28/ref=sr_1_2?crid=37UZOWDJDLMIP&keywords=Lexar_F35&qid=1641532007&s=computers&sprefix=lexar_f3%2Ccomputers%2C311&sr=1-2 Product  Third Party Advisory 
https://www.ebay.com/itm/265316509212?hash=item3dc618a61c:g:YO0AAOSwoPJeNNQN Product  Third Party Advisory 
https://www.lexar.com/en/product/lexar-jumpdrive-fingerprint-f35-usb-3-0-flash-drive/ Product  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-287 Improper Authentication cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Quick Info

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