CVE-2018-0484: 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…

PriorityP336medium6.5CVSS 3.0

AVNACLPRLUINSUCNIHAN

EPSS

0.79%

51.9th percentile

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_ios	—	—
cisco	ios	—	—
cisco	ios	—	—
cisco	ios_and_ios_xe	—	—

CVSS provenance

nvdv3.06.5MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N

vendor_cisco5.3MEDIUM

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