CVE-2021-20122 Command injection in Telus Wi-Fi Hub (PRV65B444A-S-TS)
Authenticated attackers can execute arbitrary commands as root on Telus Wi-Fi Hubs via command injection in tr69_cmd.cgi parameters.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20122?
CVE-2021-20122 is a high-severity command injection vulnerability in Telus Wi-Fi Hub (PRV65B444A-S-TS), published on 11 Oct 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router's LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device.
Weakness: CWE-78
Which versions are affected by CVE-2021-20122?
It affects 1 product.
Products include Telus Prv65b444a-S-Ts Firmware.
How do I fix CVE-2021-20122?
No fix has been published for CVE-2021-20122 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-20122 being exploited?
There is no known exploitation of CVE-2021-20122 in the wild and no public exploit code.
Other vulnerabilities in Telus Wi-Fi Hub (PRV65B444A-S-TS)
Sources
Also known as GHSA-28rc-568h-qq5j.