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

Published Sep 24, 2020

Updated

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.

Affected Software

15 affected components

Cisco IOS XE=16.2.2

Cisco IOS XE=16.3.1

Cisco IOS XE=16.3.1a

Cisco IOS XE=16.3.2

Cisco IOS XE=16.3.3

Cisco IOS XE=16.3.4

Cisco IOS XE=16.3.5

Cisco IOS XE=16.3.5b

Cisco IOS XE=16.3.6

Cisco IOS XE=16.3.7

Cisco IOS XE=16.3.8

Cisco IOS XE=16.3.9

Cisco IOS XE=16.3.10

Cisco IOS XE=16.3.11

Cisco IOS XE=17.2.1t

Event History

Sep 24, 2020

CVE Published

via MITRE·06:02 PM

Data Sourced

via MITRE·06:02 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2020-3400?

CVE-2020-3400 has been rated as a high severity vulnerability due to potential unauthorized web UI access.

How do I fix CVE-2020-3400?

To mitigate CVE-2020-3400, upgrade Cisco IOS XE to a version that addresses this vulnerability.

Which Cisco IOS XE versions are affected by CVE-2020-3400?

CVE-2020-3400 affects Cisco IOS XE versions 16.2.2, 16.3.1 through 16.3.11, and 17.2.1t.

Can CVE-2020-3400 be exploited remotely?

Yes, CVE-2020-3400 can be exploited by an authenticated remote attacker.

What type of vulnerability is CVE-2020-3400?

CVE-2020-3400 is an authorization vulnerability in the web UI of Cisco IOS XE Software.