CVE-2021-1421 Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability

High 7.8 Published 6 May 2021 Updated 8 Nov 2024

Authenticated local attackers can inject commands to execute arbitrary code with root privileges on Cisco NFVIS devices.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-1421?

CVE-2021-1421 is a high-severity command injection vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 6 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to perform a command injection attack on an affected device. The vulnerability is due to insufficient validation of user-supplied input to a configuration command. An attacker could exploit this vulnerability by including malicious input during the execution of this command. A successful exploit could allow a non-privileged attacker authenticated in the restricted CLI to execute arbitrary commands on the underlying operating system (OS) with root privileges.

Weakness: CWE-78

Which versions are affected by CVE-2021-1421?

It affects 1 product.

Products include Cisco Enterprise Nfv Infrastructure Software.

How do I fix CVE-2021-1421?

No fix has been published for CVE-2021-1421 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-2021-1421 being exploited?

There is no known exploitation of CVE-2021-1421 in the wild and no public exploit code.

Sources

Also known as GHSA-cw65-w4qp-2r37.