PT-2019-1282 · Cisco · Cisco Ios Xe+1

Published 2019-01-09 · Updated 2019-10-09 · CVE-2018-0484

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Cisco IOS and IOS XE Software (affected versions not specified)

Description A vulnerability in the access control logic of the Secure Shell (SSH) server 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 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2019-00476

CVE-2018-0484

Affected Products

Cisco Ios

Cisco Ios Xe

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-ios-ssh-vrf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-0484 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-00476 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-0484 · Security Note
• http://securityfocus.com/bid/106560 · Note