CVE-2021-1389
Assigner: cisco
Published: 2021-02-03T00:00:00
State: PUBLISHED
affected: product: Cisco IOS XR Software 
vendor: Cisco
versions: status: affected
version: n/a
datePublic: 2021-02-03T00:00:00
descriptions: value: A vulnerability in the IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL.
exploits: value: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. 
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.8
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
version: 3.1
problemTypes: descriptions: cweId: CWE-284
description: CWE-284
type: CWE
source: advisory: cisco-sa-ipv6-acl-CHgdYk8j
defect: CSCvm55638
CSCvv45698
discovery: INTERNAL
title: Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability