CVE-2021-20121 — MEDIUM (4.0)

Vulnerability Description

The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is vulnerable to an authenticated arbitrary file read. An authenticated user with physical access to the device can read arbitrary files from the device by preparing and connecting a specially prepared USB drive to the device, and making a series of crafted requests to the device's web interface.

CVSS Score

4.0

MEDIUM

CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Telus	Prv65B444A-S-Ts Firmware	3.00.20
Telus	Prv65B444A-S-Ts	-

References

https://www.tenable.com/security/research/tra-2021-41ExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2021-41ExploitThird Party Advisory

FAQ

What is CVE-2021-20121?

CVE-2021-20121 is a vulnerability with a CVSS score of 4.0 (MEDIUM). The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is vulnerable to an authenticated arbitrary file read. An authenticated user with physical access to the device can read arbitrary f...

How severe is CVE-2021-20121?

CVE-2021-20121 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20121?

Check the references section above for vendor advisories and patch information. Affected products include: Telus Prv65B444A-S-Ts Firmware, Telus Prv65B444A-S-Ts.