CVE-2020-3218 Cisco IOS XE Software Web UI Remote Code Execution Vulnerability

High 7.2 Published 3 Jun 2020 Updated 15 Nov 2024

Authenticated administrators can execute arbitrary code with root privileges on Cisco IOS XE devices via malicious file uploads in the web UI.

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-2020-3218?

CVE-2020-3218 is a high-severity command injection vulnerability in Cisco Ios Xe, published on 3 Jun 2020. 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 with administrative privileges to execute arbitrary code with root privileges on the underlying Linux shell. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by first creating a malicious file on the affected device itself and then uploading a second malicious file to the device. A successful exploit could allow the attacker to execute arbitrary code with root privileges or bypass licensing requirements on the device.

Weakness: CWE-20

Which versions are affected by CVE-2020-3218?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3218?

No fix has been published for CVE-2020-3218 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-2020-3218 being exploited?

There is no known exploitation of CVE-2020-3218 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-2vmg-wrjc-c333.