PT-2021-13785 · Telus · Telus Wi-Fi Hub

Evan Grant · Published 2021-10-11 · Updated 2021-10-18 · CVE-2021-20122

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Telus Wi-Fi Hub (PRV65B444A-S-TS) version 3.00.20

Description: The issue is an authenticated command injection vulnerability in multiple parameters passed to the tr69 cmd.cgi endpoint. A remote attacker connected to the router's LAN and authenticated with a super user account could leverage this issue to run commands or gain a shell as root on the target device.

Recommendations: For Telus Wi-Fi Hub (PRV65B444A-S-TS) version 3.00.20, consider restricting access to the tr69 cmd.cgi endpoint until a patch is available. As a temporary workaround, avoid using parameters that could be used for command injection in the tr69 cmd.cgi endpoint. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2021-20122

Affected Products

Telus Wi-Fi Hub

References · 4

• 🔥 https://tenable.com/security/research/tra-2021-41 · Exploit
• https://osv.dev/vulnerability/CVE-2021-20122 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20122 · Security Note
• https://t.me/cibsecurity/30354 · Telegram Post