CVE-2022-20714 Cisco IOS XR Software for ASR 9000 Series Routers Lightspeed-Plus Line Cards Denial of Service Vulnerability

High 8.6 Published 15 Apr 2022 Updated 6 Nov 2024

Remote attackers can cause a denial of service on Cisco ASR 9000 line cards by sending crafted packets, requiring vendor patches.

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-2022-20714?

CVE-2022-20714 is a high-severity denial of service vulnerability in Cisco Ios Xr, published on 15 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the data plane microcode of Lightspeed-Plus line cards for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the line card to reset. This vulnerability is due to the incorrect handling of malformed packets that are received on the Lightspeed-Plus line cards. An attacker could exploit this vulnerability by sending a crafted IPv4 or IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the Lightspeed-Plus line card to reset, resulting in a denial of service (DoS) condition for any traffic that traverses that line card.

Weakness: CWE-125, CWE-126

Which versions are affected by CVE-2022-20714?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2022-20714?

No fix has been published for CVE-2022-20714 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-2022-20714 being exploited?

There is no known exploitation of CVE-2022-20714 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-47hj-93mx-2w7m.