Cisco IOS XR Software Standby Route Processor Gigabit Ethernet Management Interface Access Control List Bypass Vulnerability (cisco-sa-xracl-zbWSWREt)

medium Nessus Plugin ID 137851

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

An authentication bypass vulnerability exists in Cisco IOS XR Software due to a logic error, which prevents the ACL from working when applied against the standby route processor management interface. An unauthenticated, remote attacker can exploit this by attempting to access the device through the standby route processor management interface.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvt55079

Plugin Details

Severity: Medium

ID: 137851

File Name: cisco-sa-xracl-zbWSWREt.nasl

Version: 1.8

Type: combined

Family: CISCO

Published: 6/26/2020

Updated: 9/10/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-3364

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2020

Vulnerability Publication Date: 6/17/2020

Reference Information

CVE: CVE-2020-3364

CWE: 284

CISCO-SA: cisco-sa-xracl-zbWSWREt

IAVA: 2020-A-0278-S

CISCO-BUG-ID: CSCvt55079

Detections

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