CVE-2019-12663 Cisco IOS XE Software TrustSec Protected Access Credential Provisioning Denial of Service Vulnerability

Medium 6.8 Published 25 Sep 2019 Updated 21 Nov 2024

An unauthenticated remote attacker can cause a device reload and denial of service by sending malicious RADIUS messages to Cisco IOS XE devices in a specific state.

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-2019-12663?

CVE-2019-12663 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 25 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Cisco TrustSec (CTS) Protected Access Credential (PAC) provisioning module of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of attributes in RADIUS messages. An attacker could exploit this vulnerability by sending a malicious RADIUS message to an affected device while the device is in a specific state.

Weakness: CWE-20

Which versions are affected by CVE-2019-12663?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2019-12663?

No fix has been published for CVE-2019-12663 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-2019-12663 being exploited?

There is no known exploitation of CVE-2019-12663 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-6jpf-pwf8-qj8x.