CVE-2020-3414 Cisco IOS XE Software for Cisco 4461 Integrated Services Routers Denial of Service Vulnerability

High 8.6 Published 24 Sep 2020 Updated 13 Nov 2024

Remote unauthenticated attackers can cause Cisco 4461 routers to reload via crafted IP traffic, 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-2020-3414?

CVE-2020-3414 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 24 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the packet processing of Cisco IOS XE Software for Cisco 4461 Integrated Services Routers could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect processing of IPv4 or IPv6 traffic to or through an affected device. An attacker could exploit this vulnerability by sending IP traffic to or through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Weakness: CWE-400, CWE-19

Which versions are affected by CVE-2020-3414?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2020-3414?

No fix has been published for CVE-2020-3414 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-2020-3414 being exploited?

There is no known exploitation of CVE-2020-3414 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-r9hr-g977-8299.