CVE-2022-20624 Cisco NX-OS Software Cisco Fabric Services Over IP Denial of Service Vulnerability

What is CVE-2022-20624?

CVE-2022-20624 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 23 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Cisco Fabric Services over IP (CFSoIP) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of incoming CFSoIP packets. An attacker could exploit this vulnerability by sending crafted CFSoIP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Weakness: CWE-20, CWE-400

Which versions are affected by CVE-2022-20624?

It affects 1 product.

Products include Cisco Nx-Os.

How do I fix CVE-2022-20624?

No fix has been published for CVE-2022-20624 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-2022-20624 being exploited?

There is no known exploitation of CVE-2022-20624 in the wild and no public exploit code.

Other vulnerabilities in Cisco Nx-Os

• CVE-2024-20399 Cisco NX-OS Command Injection Exploited Medium 6.0
• CVE-2021-1361 Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability Critical 9.8
• CVE-2018-0301 Memory corruption in Cisco NX-OS unknown Critical 9.8
• CVE-2016-1453 Memory corruption in n/a Critical 9.8
• CVE-2016-1341 Hardcoded credentials in n/a Critical 9.8

All Cisco Nx-Os vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hrv6-4774-856p.