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Vulnerability of Cisco IOS, IOS XE: access via SSH VRF

Synthesis of the vulnerability 

An attacker can bypass restrictions to open a SSH connection via VRF of Cisco IOS or IOS XE, in order to try to authenticate.
Impacted systems: Cisco ASR, Cisco Catalyst, IOS by Cisco, IOS XE Cisco, Cisco Router.
Severity of this alert: 2/4.
Creation date: 10/01/2019.
Références of this alert: cisco-sa-20190109-ios-ssh-vrf, CSCvk37852, CVE-2018-0484, VIGILANCE-VUL-28205.

Description of the vulnerability 

An attacker can bypass restrictions to open a SSH connection via VRF of Cisco IOS or IOS XE, in order to try to authenticate.
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This computer vulnerability bulletin impacts software or systems such as Cisco ASR, Cisco Catalyst, IOS by Cisco, IOS XE Cisco, Cisco Router.

Our Vigil@nce team determined that the severity of this vulnerability bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this threat note.

Solutions for this threat 

Cisco IOS, IOS XE: solution CSCvk37852.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvk37852
  https://tools.cisco.com/bugsearch/bug/CSCvk37852
  https://tools.cisco.com/quickview/bug/CSCvk37852
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Computer vulnerabilities tracking service 

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