CVE-2020-3228 Cisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Service Vulnerability

Medium 6.8 Published 3 Jun 2020 Updated 15 Nov 2024

Unauthenticated remote attackers can cause device reloads via crafted SXP packets, leading to denial of service on Cisco network devices.

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-2020-3228?

CVE-2020-3228 is a medium-severity denial of service vulnerability in Cisco Ios, published on 3 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Weakness: CWE-20

Which versions are affected by CVE-2020-3228?

It affects 3 products.

Products include Cisco Ios, Cisco Ios Xe, Cisco Nx-Os.

How do I fix CVE-2020-3228?

No fix has been published for CVE-2020-3228 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-2020-3228 being exploited?

There is no known exploitation of CVE-2020-3228 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-cp9x-q25f-c3q9.