CVE-2018-0470 Cisco IOS XE Software HTTP Denial of Service Vulnerability

High 8.6 Published 5 Oct 2018 Updated 26 Nov 2024

Unauthenticated remote attackers can cause a denial of service on Cisco IOS XE devices by sending malformed HTTP packets that trigger a buffer overflow.

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-2018-0470?

CVE-2018-0470 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 web framework of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the affected software improperly parsing malformed HTTP packets that are destined to a device. An attacker could exploit this vulnerability by sending a malformed HTTP packet to an affected device for processing. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected device, resulting in a DoS condition.

Weakness: CWE-119, CWE-399

Which versions are affected by CVE-2018-0470?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2018-0470?

No fix has been published for CVE-2018-0470 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-2018-0470 being exploited?

There is no known exploitation of CVE-2018-0470 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-m395-rxf5-2vf4.