CVE-2020-3400

EUVD-2020-24671

24.09.2020, 18:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.8 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cisco	CNA	8.8 HIGH	NETWORK	LOW	LOW	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 41%

Affected Products (NVD)

Vendor	Product	Version
cisco	ios_xe	16.2.2
cisco	ios_xe	16.3.1
cisco	ios_xe	16.3.1a:a
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:b
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:t

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-862 - Missing Authorization
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-auth-bypass-6j2BYUc7