CVE-2024-20311 Denial of service in Cisco IOS XE Software

High 8.6 Published 27 Mar 2024 Updated 27 Aug 2024

Unauthenticated remote attackers can cause a denial of service by sending crafted LISP packets to Cisco IOS devices with the LISP feature enabled.

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-2024-20311?

CVE-2024-20311 is a high-severity denial of service vulnerability in Cisco Ios, 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 Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport.

Weakness: CWE-674

Which versions are affected by CVE-2024-20311?

It affects 2 products.

Products include Cisco Ios, Cisco Ios Xe.

How do I fix CVE-2024-20311?

No fix has been published for CVE-2024-20311 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-2024-20311 being exploited?

There is no known exploitation of CVE-2024-20311 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-6r9p-4766-xgg4.