PT-2022-6304 · Cisco · Cisco Ios Xe

Published 2022-09-28 · Updated 2022-10-13 · CVE-2022-20870

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software for Cisco Catalyst 3650, Catalyst 3850, and Catalyst 9000 Family Switches (affected versions not specified)

Description A vulnerability in the egress MPLS packet processing function could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This issue is due to insufficient input validation of IPv4 traffic. An attacker could exploit this vulnerability by sending a malformed packet out of an affected MPLS-enabled interface. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-130

Related Identifiers

BDU:2023-00797

CVE-2022-20870

Affected Products

Cisco Ios Xe

References · 4

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-mpls-dos-Ab4OUL3 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-mpls-dos-Ab4OUL3 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-20870 · Security Note
• https://bdu.fstec.ru/vul/2023-00797 · Security Note