CVE-2018-0467 Cisco IOS and IOS XE Software IPv6 Hop-by-Hop Options Denial of Service Vulnerability

High 8.6 Published 5 Oct 2018 Updated 26 Nov 2024

Remote attackers can cause Cisco IOS devices to reload via malicious IPv6 packets, resulting in a denial of service.

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-2018-0467?

CVE-2018-0467 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 5 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the IPv6 processing code of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of specific IPv6 hop-by-hop options. An attacker could exploit this vulnerability by sending a malicious IPv6 packet to or through the affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.

Weakness: CWE-20

Which versions are affected by CVE-2018-0467?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2018-0467?

No fix has been published for CVE-2018-0467 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-2018-0467 being exploited?

There is no known exploitation of CVE-2018-0467 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-w77w-7rqr-q6v8.