CVE-2020-3364: Cisco IOS XR Software Standby Route Processor Gigabit Ethernet Management Interface Access Control List Bypass Vulnerability

Published Jun 18, 2020

Updated

A vulnerability in the access control list (ACL) functionality of the standby route processor management interface of Cisco IOS XR Software could allow an unauthenticated, remote attacker to reach the configured IP addresses on the standby route processor management Gigabit Ethernet Management interface. The vulnerability is due to a logic error that was introduced in the Cisco IOS XR Software, which prevents the ACL from working when applied against the standby route processor management interface. An attacker could exploit this vulnerability by attempting to access the device through the standby route processor management interface.

Affected Software

6 affected components

Cisco IOS XR=6.7.1

Cisco IOS XR=7.0.2

Cisco IOS XR=7.0.11

Cisco IOS XR=7.0.12

Cisco IOS XR=7.1.1

Cisco IOS XR=7.1.15

Event History

Jun 18, 2020

CVE Published

via MITRE·02:17 AM

Data Sourced

via MITRE·02:17 AM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2020-3364?

The severity of CVE-2020-3364 is medium with a CVSS score of 5.3.

How does CVE-2020-3364 affect Cisco IOS XR Software?

CVE-2020-3364 affects Cisco IOS XR Software versions 6.7.1, 7.0.2, 7.0.11, 7.0.12, 7.1.1, and 7.1.15.

What is the vulnerability in CVE-2020-3364?

CVE-2020-3364 is a vulnerability in the access control list (ACL) functionality of the standby route processor management interface of Cisco IOS XR Software.

How can an attacker exploit CVE-2020-3364?

An unauthenticated, remote attacker can exploit CVE-2020-3364 to reach the configured IP addresses on the standby route processor management interface.

How can I fix CVE-2020-3364?

To fix CVE-2020-3364, it is recommended to upgrade Cisco IOS XR Software to a fixed software release as mentioned in the Cisco Security Advisory.