CVE-2024-20343 Cisco IOS XR Software CLI Arbitrary File Read Vulnerability

Medium 5.5 Published 11 Sep 2024 Updated 11 Sep 2024

Authenticated local attackers can read arbitrary files on the underlying Linux OS via improper CLI argument validation in Cisco IOS XR.

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-2024-20343?

CVE-2024-20343 is a medium-severity path traversal vulnerability in Cisco Ios Xr, published on 11 Sep 2024. 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 XR Software could allow an authenticated, local attacker to read any file in the file system of the underlying Linux operating system. The attacker must have valid credentials on the affected device. This vulnerability is due to incorrect validation of the arguments that are passed to a specific CLI command. An attacker could exploit this vulnerability by logging in to an affected device with low-privileged credentials and using the affected command. A successful exploit could allow the attacker access files in read-only mode on the Linux file system.

Weakness: CWE-284

Which versions are affected by CVE-2024-20343?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2024-20343?

No fix has been published for CVE-2024-20343 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2024-20343 being exploited?

There is no known exploitation of CVE-2024-20343 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-9m8x-hm95-w858.