CVE-2022-20919 Cisco IOS and IOS XE Software Common Industrial Protocol Request Denial of Service Vulnerability

High 8.6 Published 30 Sep 2022 Updated 1 Nov 2024

Remote attackers can cause Cisco IOS devices to reload by sending malformed CIP packets, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-20919?

CVE-2022-20919 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 30 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the processing of malformed Common Industrial Protocol (CIP) packets that are sent to Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient input validation during processing of CIP packets. An attacker could exploit this vulnerability by sending a malformed CIP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.

Weakness: CWE-755, CWE-248

Which versions are affected by CVE-2022-20919?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2022-20919?

No fix has been published for CVE-2022-20919 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-20919 being exploited?

There is no known exploitation of CVE-2022-20919 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-3mfm-pfv2-vmrp.