CVE-2018-0472 Cisco IOS XE Software and Cisco ASA 5500-X Series Adaptive Security Appliance IPsec Denial of Service Vulnerability

High 8.6 Published 5 Oct 2018 Updated 26 Nov 2024

Remote unauthenticated attackers can cause device reloads by sending malformed IPsec packets to affected Cisco ASA and IOS XE 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-2018-0472?

CVE-2018-0472 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 IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected device.

Weakness: CWE-20

Which versions are affected by CVE-2018-0472?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2018-0472?

No fix has been published for CVE-2018-0472 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-2018-0472 being exploited?

There is no known exploitation of CVE-2018-0472 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-mj5q-hmjx-cx8j.