CVE-2024-20314 Denial of service in Cisco IOS XE Software

High 8.6 Published 27 Mar 2024 Updated 1 Aug 2024

Unauthenticated remote attackers can cause denial of service on Cisco IOS XE devices by sending crafted IPv4 packets that exhaust CPU resources.

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-2024-20314?

CVE-2024-20314 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 27 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the IPv4 Software-Defined Access (SD-Access) fabric edge node feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause high CPU utilization and stop all traffic processing, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain IPv4 packets. An attacker could exploit this vulnerability by sending certain IPv4 packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition.

Weakness: CWE-783

Which versions are affected by CVE-2024-20314?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2024-20314?

No fix has been published for CVE-2024-20314 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-2024-20314 being exploited?

There is no known exploitation of CVE-2024-20314 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-xhrx-9p3c-7wxw.