CVE Vulnerability

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 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.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-ios-ssh-vrf Vendor Advisory
http://www.securityfocus.com/bid/106560 Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:o:cisco:ios:16.6.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:16.6.2:*:*:*:*:*:*:*
Information

Published : 2019-01-10 06:29

Updated : 2019-10-09 11:32

NVD link : CVE-2018-0484

Mitre link : CVE-2018-0484

Products Affected
No products.
CWE
NVD-CWE-noinfo