What is the severity of CVE-2024-20311?

CVE-2024-20311 has been classified with a high severity level due to its potential impact on device availability.

How do I fix CVE-2024-20311?

To fix CVE-2024-20311, upgrade to the latest version of Cisco IOS or Cisco IOS XE Software where the vulnerability has been patched.

Who is affected by CVE-2024-20311?

CVE-2024-20311 affects devices running Cisco IOS Software and Cisco IOS XE Software that have the Locator ID Separation Protocol (LISP) enabled.

What is the potential impact of CVE-2024-20311?

The potential impact of CVE-2024-20311 is that an unauthenticated remote attacker may cause an affected device to reload, resulting in service disruption.

How can I determine if my device is vulnerable to CVE-2024-20311?

You can determine if your device is vulnerable to CVE-2024-20311 by checking if it is running a version of Cisco IOS or Cisco IOS XE Software with LISP enabled.

Vulnerability/
CVE-2024-20311

high

8.6

CWE

674

27/3/2024

27/8/2024

CVE-2024-20311

First published: Wed Mar 27 2024(Updated: )

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.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS
Cisco IOS XE

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Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lisp-3gYXs3qP

Frequently Asked Questions

What is the severity of CVE-2024-20311?
CVE-2024-20311 has been classified with a high severity level due to its potential impact on device availability.
How do I fix CVE-2024-20311?
To fix CVE-2024-20311, upgrade to the latest version of Cisco IOS or Cisco IOS XE Software where the vulnerability has been patched.
Who is affected by CVE-2024-20311?
CVE-2024-20311 affects devices running Cisco IOS Software and Cisco IOS XE Software that have the Locator ID Separation Protocol (LISP) enabled.
What is the potential impact of CVE-2024-20311?
The potential impact of CVE-2024-20311 is that an unauthenticated remote attacker may cause an affected device to reload, resulting in service disruption.
How can I determine if my device is vulnerable to CVE-2024-20311?
You can determine if your device is vulnerable to CVE-2024-20311 by checking if it is running a version of Cisco IOS or Cisco IOS XE Software with LISP enabled.

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