CVE-2022-20915CWE-115

Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability

High · published October 10, 2022

CVSS v3.1
7.4
EPSS
0%
Percentile
22.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00304 · 22.0th percentile
Weakness
CWE-115 · Misinterpretation of Input
Published
2022-10-10T20:43Z
EPSS history
Timeline
  • 10 OCT 20:43Z
    Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability
    cvelistv5