CVE-2024-20304 Cisco IOS XR Software Packet Memory Exhaustion Vulnerability

High 8.6 Published 11 Sep 2024 Updated 11 Sep 2024

An unauthenticated remote attacker can exhaust UDP packet memory via crafted Mtrace2 packets, causing a denial of service on Cisco IOS XR 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-2024-20304?

CVE-2024-20304 is a high-severity denial of service vulnerability in Cisco Ios Xr, published on 11 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 multicast traceroute version 2 (Mtrace2) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust the UDP packet memory of an affected device. This vulnerability exists because the Mtrace2 code does not properly handle packet memory. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to exhaust the incoming UDP packet memory. The affected device would not be able to process higher-level UDP-based protocols packets, possibly causing a denial of service (DoS) condition. Note: This vulnerability can be exploited using IPv4 or IPv6.

Weakness: CWE-401

Which versions are affected by CVE-2024-20304?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2024-20304?

No fix has been published for CVE-2024-20304 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-2024-20304 being exploited?

There is no known exploitation of CVE-2024-20304 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-3252-jgxw-qhmv.