CVE-2021-1432 Cisco IOS XE SD-WAN Software Arbitrary Command Execution Vulnerability

High 7.3 Published 24 Mar 2021 Updated 8 Nov 2024

Authenticated local attackers can inject commands into files to execute arbitrary code as root on Cisco IOS XE SD-WAN devices.

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

What is CVE-2021-1432?

CVE-2021-1432 is a high-severity command injection vulnerability in Cisco Ios Xe, published on 24 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.

Weakness: CWE-74, CWE-20

Which versions are affected by CVE-2021-1432?

It affects 2 products.

Products include Cisco Ios Xe, Cisco Ios Xe Sd-Wan.

How do I fix CVE-2021-1432?

No fix has been published for CVE-2021-1432 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-2021-1432 being exploited?

There is no known exploitation of CVE-2021-1432 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-gcqm-xc9c-9vw6.