CVE-2024-20313 Denial of service in Cisco IOS XE Software

High 7.4 Published 24 Apr 2024 Updated 9 Aug 2024

An unauthenticated adjacent attacker can cause a Cisco IOS XE device to reload by sending malformed OSPF updates, resulting in a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-20313?

CVE-2024-20313 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 24 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the OSPF version 2 (OSPFv2) feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of OSPF updates that are processed by a device. An attacker could exploit this vulnerability by sending a malformed OSPF update to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Weakness: CWE-120

Which versions are affected by CVE-2024-20313?

It affects 1 product.

Products include Cisco Ios Xe.

How do I fix CVE-2024-20313?

No fix has been published for CVE-2024-20313 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-2024-20313 being exploited?

There is no known exploitation of CVE-2024-20313 in the wild and no public exploit code.

All Cisco Ios Xe vulnerabilities

Sources

Also known as GHSA-74jh-9vmj-8f72.