CVE-2022-20915

2022-10-1021:15:10

CWE-436

CWE-115

[email protected]

web.nvd.nist.gov

cisco

ios xe software

6vpe

zone-based firewall

vulnerability

dos

cve-2022-20915

7.4 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

19.8%

JSON

A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.

Affected configurations

NVD

Node

ciscoios_xeMatch-

CPENameOperatorVersion
cisco:ios_xecisco ios xeeq-

CPE	Name	Operator	Version
cisco:ios_xe	cisco ios xe	eq	-

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco IOS XE Software ",
    "versions": [
      {
        "version": "n/a",
        "status": "affected"
      }
    ]
  }
]