CVE-2021-33964 Command injection in n/a

High 8.8 Published Updated

Attackers can execute arbitrary remote commands on China Mobile An Lianbao WF-1 routers via a command injection flaw in the firewall level API.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-33964?

CVE-2021-33964 is a high-severity command injection vulnerability in n/a, published on 18 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

China Mobile An Lianbao WF-1 V1.0.1 router provides a web interface /api/ZRRuleFilter/set_firewall_level which receives parameters by POST request, and the parameter firewall_level has a command injection vulnerability. An attacker can use the vulnerability to execute remote commands.

Weakness: CWE-77

Which versions are affected by CVE-2021-33964?

It affects 1 product.

Products include Chinamobile an Lianbao Wf-1 Firmware.

How do I fix CVE-2021-33964?

No fix has been published for CVE-2021-33964 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-2021-33964 being exploited?

There is no known exploitation of CVE-2021-33964 in the wild and no public exploit code.

Sources

Also known as GHSA-72m3-3p32-pw2q.

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