CVE-2020-3400 Cisco IOS XE Software Web UI Authorization Bypass Vulnerability

High 8.8 Published 24 Sep 2020 Updated 13 Nov 2024

An authenticated attacker can bypass web UI authorization checks to perform administrative actions, requiring a patch for Cisco IOS XE.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-3400?

CVE-2020-3400 is a high-severity missing authorization vulnerability in Cisco Ios Xe, published on 24 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to utilize parts of the web UI for which they are not authorized.The vulnerability is due to insufficient authorization of web UI access requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web UI. A successful exploit could allow the attacker to utilize parts of the web UI for which they are not authorized. This could allow a Read-Only user to perform actions of an Admin user.

Weakness: CWE-862

Which versions are affected by CVE-2020-3400?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3400?

No fix has been published for CVE-2020-3400 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-3400 being exploited?

There is no known exploitation of CVE-2020-3400 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-wpmp-jhx9-xgq5.