CVE-2020-3223 Cisco IOS XE Software Web UI Arbitrary File Read Vulnerability

Medium 4.5 Published 3 Jun 2020 Updated 15 Nov 2024

An authenticated admin can read arbitrary files on Cisco IOS XE devices via the web UI due to insufficient file scope limiting.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2020-3223?

CVE-2020-3223 is a medium-severity path traversal vulnerability in Cisco Ios Xe, published on 3 Jun 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker with administrative privileges to read arbitrary files on the underlying filesystem of the device. The vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the filesystem and then accessing it through the web UI. An exploit could allow the attacker to read arbitrary files from the underlying operating system's filesystem.

Weakness: CWE-59

Which versions are affected by CVE-2020-3223?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3223?

No fix has been published for CVE-2020-3223 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-2020-3223 being exploited?

There is no known exploitation of CVE-2020-3223 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-4c9c-3725-v3v6.