CVE-2020-3404 MEDIUM

CVE-2020-3404: Cisco IOS XE Software Consent Token Bypass Vulnerability

Vendor Cisco
Product Cisco IOS XE Software
Weakness CWE-863 · Incorrect authorization
Published September 24, 2020
Last update November 13, 2024

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A vulnerability in the persistent Telnet/Secure Shell (SSH) CLI of Cisco IOS XE Software could allow an authenticated, local attacker to gain shell access on an affected device and execute commands on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient enforcement of the consent token in authorizing shell access. An attacker could exploit this vulnerability by authenticating to the persistent Telnet/SSH CLI on an affected device and requesting shell access. A successful exploit could allow the attacker to gain shell access on the affected device and execute commands on the underlying OS with root privileges.

Key dates

02Disclosure timeline

September 24, 2020 CVE published
November 13, 2024 Record updated