CVE-2020-3200 HIGH

CVE-2020-3200: Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability

Vendor Cisco
Product Cisco IOS 12.2(58)SE
Weakness CWE-371
Published June 3, 2020
Last update November 15, 2024

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Key dates

02Disclosure timeline

June 3, 2020 CVE published
November 15, 2024 Record updated