CVE-2021-1443 Cisco IOS XE Software Web UI OS Command Injection Vulnerability

Medium 5.5 Published 24 Mar 2021 Updated 8 Nov 2024

Authenticated attackers can execute arbitrary code with root privileges on Cisco IOS XE devices by tampering with configuration files and sending API calls.

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-2021-1443?

CVE-2021-1443 is a medium-severity command injection vulnerability in Cisco Ios Xe, published on 24 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying operating system of an affected device. The vulnerability exists because the affected software improperly sanitizes values that are parsed from a specific configuration file. An attacker could exploit this vulnerability by tampering with a specific configuration file and then sending an API call. A successful exploit could allow the attacker to inject arbitrary code that would be executed on the underlying operating system of the affected device. To exploit this vulnerability, the attacker would need to have a privileged set of credentials to the device.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2021-1443?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2021-1443?

No fix has been published for CVE-2021-1443 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-2021-1443 being exploited?

There is no known exploitation of CVE-2021-1443 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-g475-p834-3234.