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CVE-2018-0484

CVE information

Published

5 years ago

Last Modified

4 years ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

Description

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..

CVSSv2.0 Score

Severity
Medium
Base Score
4/10
Exploit Score
8/10
Access Vector
Network
Access Complexity
Low
Authentication Required
Single
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Medium
Base Score
6.5/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
Low
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:cisco:ios:16.6.4:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios:16.6.2:*:*:*:*:*:*:*
  Yes
- -