CVE-2022-20870 — HIGH (8.6)

Vulnerability Description

A vulnerability in the egress MPLS packet processing function of Cisco IOS XE Software for Cisco Catalyst 3650, Catalyst 3850, and Catalyst 9000 Family Switches could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability 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.

CVSS Score

8.6

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cisco	Ios Xe	-
Cisco	Catalyst 3650	-
Cisco	Catalyst 3650-12X48Fd-E	-
Cisco	Catalyst 3650-12X48Fd-L	-
Cisco	Catalyst 3650-12X48Fd-S	-
Cisco	Catalyst 3650-12X48Uq	-
Cisco	Catalyst 3650-12X48Uq-E	-
Cisco	Catalyst 3650-12X48Uq-L	-
Cisco	Catalyst 3650-12X48Uq-S	-
Cisco	Catalyst 3650-12X48Ur	-
Cisco	Catalyst 3650-12X48Ur-E	-
Cisco	Catalyst 3650-12X48Ur-L	-
Cisco	Catalyst 3650-12X48Ur-S	-
Cisco	Catalyst 3650-12X48Uz	-
Cisco	Catalyst 3650-12X48Uz-E	-
Cisco	Catalyst 3650-12X48Uz-L	-
Cisco	Catalyst 3650-12X48Uz-S	-
Cisco	Catalyst 3650-24Pd	-
Cisco	Catalyst 3650-24Pd-E	-
Cisco	Catalyst 3650-24Pd-L	-

Related Weaknesses (CWE)

CWE-130

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iVendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iVendor Advisory

FAQ

What is CVE-2022-20870?

CVE-2022-20870 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the egress MPLS packet processing function of Cisco IOS XE Software for Cisco Catalyst 3650, Catalyst 3850, and Catalyst 9000 Family Switches could allow an unauthenticated, remote ...

How severe is CVE-2022-20870?

CVE-2022-20870 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2022-20870?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 3650, Cisco Catalyst 3650-12X48Fd-E, Cisco Catalyst 3650-12X48Fd-L, Cisco Catalyst 3650-12X48Fd-S.