What is the severity of CVE-2018-0484?

CVE-2018-0484 is classified as a medium-severity vulnerability affecting Cisco IOS and IOS XE software.

How do I fix CVE-2018-0484?

To fix CVE-2018-0484, upgrade your Cisco IOS or IOS XE software to a version that addresses this vulnerability.

What systems are affected by CVE-2018-0484?

CVE-2018-0484 affects Cisco IOS versions 16.6.2 and 16.6.4.

What type of vulnerability is CVE-2018-0484?

CVE-2018-0484 is an access control vulnerability in the SSH server of Cisco IOS.

Can CVE-2018-0484 allow unauthorized access?

Yes, CVE-2018-0484 may allow unauthorized connections to the SSH server from a VRF instance.

Vulnerability/
CVE-2018-0484

medium

6.5

CWE

284

10/1/2019

19/11/2024

CVE-2018-0484: Cisco IOS and IOS XE Software Secure Shell Connection on VRF Vulnerability

First published: Thu Jan 10 2019(Updated: )

A vulnerability in the access control logic of the Secure Shell (SSH) server of Cisco IOS and IOS XE Software may allow connections sourced from a virtual routing and forwarding (VRF) instance despite the absence of the vrf-also keyword in the access-class configuration. The vulnerability is due to a missing check in the SSH server. An attacker could use this vulnerability to open an SSH connection to an affected Cisco IOS or IOS XE device with a source address belonging to a VRF instance. Once connected, the attacker would still need to provide valid credentials to access the device.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Puppet Cisco IOS	=16.6.2
Puppet Cisco IOS	=16.6.4

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Frequently Asked Questions

What is the severity of CVE-2018-0484?
CVE-2018-0484 is classified as a medium-severity vulnerability affecting Cisco IOS and IOS XE software.
How do I fix CVE-2018-0484?
To fix CVE-2018-0484, upgrade your Cisco IOS or IOS XE software to a version that addresses this vulnerability.
What systems are affected by CVE-2018-0484?
CVE-2018-0484 affects Cisco IOS versions 16.6.2 and 16.6.4.
What type of vulnerability is CVE-2018-0484?
CVE-2018-0484 is an access control vulnerability in the SSH server of Cisco IOS.
Can CVE-2018-0484 allow unauthorized access?
Yes, CVE-2018-0484 may allow unauthorized connections to the SSH server from a VRF instance.

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version/cisco ios/16.6.4

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