CVE-2024-20464 Denial of service in Cisco IOS XE Software

High 8.6 Published 25 Sep 2024 Updated 25 Sep 2024

An unauthenticated remote attacker can cause a denial of service by sending crafted PIMv2 packets to Cisco 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-2024-20464?

CVE-2024-20464 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 25 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of received IPv4 PIMv2 packets. An attacker could exploit this vulnerability by sending a crafted PIMv2 packet to a PIM-enabled interface on an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Note: This vulnerability can be exploited with either an IPv4 multicast or unicast packet.

Weakness: CWE-20

Which versions are affected by CVE-2024-20464?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2024-20464?

No fix has been published for CVE-2024-20464 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-2024-20464 being exploited?

There is no known exploitation of CVE-2024-20464 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-pffp-cxqq-7pcw.