CVE-2021-46390 Auth bypass in n/a
Attackers can bypass authentication on Lexar secure USB drives by manipulating verification results, gaining unauthorized access to sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-46390?
CVE-2021-46390 is a medium-severity authentication bypass vulnerability in n/a, published on 21 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2021-46390?
It affects 1 product.
Products include Lexar F35 Firmware.
How do I fix CVE-2021-46390?
No fix has been published for CVE-2021-46390 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-46390 being exploited?
There is no known exploitation of CVE-2021-46390 in the wild and no public exploit code.