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HIGH

Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability

Published Jun 3, 2020

Description

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.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (2)

References (2)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Jun 3, 2020
Updated Nov 15, 2024
Reserved Dec 12, 2019
CISA Vulnrichment
Updated Nov 15, 2024
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity n/a
Public date n/a
ENISA EUVD
Assigner cisco
Published Jun 3, 2020
Updated Nov 15, 2024
Exploited since n/a
EUVD-2020-24471