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.
Published 2022-03-21 20:15:14
Updated 2022-03-29 17:36:47
Source MITRE
View at NVD,   CVE.org
Vulnerability category: BypassGain privilegeDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-46390

0.18%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-46390

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
6.8
MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.9
5.9
NIST

CWE ids for CVE-2021-46390

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-46390

Products affected by CVE-2021-46390

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