CVE-2023-20035 Cisco IOS XE SD-WAN Software Command Injection Vulnerability

High 7.8 Published 23 Mar 2023 Updated 28 Oct 2024

Authenticated local attackers can execute arbitrary commands with root privileges via insufficient input validation in the CLI.

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-2023-20035?

CVE-2023-20035 is a high-severity command injection vulnerability in Cisco IOS XE Software, published on 23 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges. This vulnerability is due to insufficient input validation by the system CLI. An attacker with privileges to run commands could exploit this vulnerability by first authenticating to an affected device using either local terminal access or a management shell interface and then submitting crafted input to the system CLI. A successful exploit could allow the attacker to execute commands on the underlying operating system with root-level privileges. An attacker with limited user privileges could use this vulnerability to gain complete control over the system. Note: For additional information about specific impacts, see the Details section of this advisory.

Weakness: CWE-146

Which versions are affected by CVE-2023-20035?

It affects 1 product.

Products include Cisco Ios Xe Sd-Wan.

How do I fix CVE-2023-20035?

No fix has been published for CVE-2023-20035 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-2023-20035 being exploited?

There is no known exploitation of CVE-2023-20035 in the wild and no public exploit code.

Sources

Also known as GHSA-mg9g-g88j-w67g.