CVE-2022-20697 Cisco IOS and IOS XE Software Web Services Denial of Service Vulnerability

High 8.6 Published 15 Apr 2022 Updated 6 Nov 2024

An authenticated remote attacker can cause a denial of service by sending excessive HTTP requests to Cisco IOS devices, requiring a patch.

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-2022-20697?

CVE-2022-20697 is a high-severity denial of service vulnerability in Cisco Ios, 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 web services interface of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper resource management in the HTTP server code. An attacker could exploit this vulnerability by sending a large number of HTTP requests to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Weakness: CWE-772, CWE-691

Which versions are affected by CVE-2022-20697?

It affects 2 products.

Products include Cisco Ios, Cisco Ios Xe.

How do I fix CVE-2022-20697?

No fix has been published for CVE-2022-20697 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-2022-20697 being exploited?

There is no known exploitation of CVE-2022-20697 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-hhh3-rvr9-x6qq.