CVE-2022-20915

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

Description

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.

Categories

7.4
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory cisco.com
Affected: Cisco Cisco IOS XE Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-20915?
CVE-2022-20915 has been scored as a high severity vulnerability.
How to fix CVE-2022-20915?
To fix CVE-2022-20915, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-20915 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-20915 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-20915?
CVE-2022-20915 affects Cisco Cisco IOS XE Software.
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