# Check Point Response to CVE-2024-2511 - OpenSSL unbounded memory growth with session handling in TLSv1.3

Please read this important update from Check Point.

## Security Alert:
- **Severity:** Low  
- **Product:** Security Gateways, Security Management  
- **Version:** R80 (EOS), R80.10 (EOS), R80.20 (EOS), R80.30 (EOS), R80.40 (EOS), R81 (EOS), R81.10 (EOS), R81.20  
- **Last Modified:** 2025-02-09

## Symptoms

- A vulnerability [CVE-2024-2511](https://www.cve.org/CVERecord?id=CVE-2024-2511) has been discovered in OpenSSL, a widely used open-source library for SSL/TLS encryption.

This vulnerability allows for initiating a Denial of Service (DoS) attack by triggering unbounded memory growth when processing TLSv1.3 sessions with certain non-default TLS server configurations. This configuration is only activated in the event of an error while creating a TLS session.

The severity of this CVE is low, and the likelihood of it occurring is rare.

## Solution

This problem was fixed. The fix is included in:

- [Check Point R82](https://support.checkpoint.com/results/sk/sk181127)
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 79
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 158
- [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 106

If you choose not to upgrade, [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a **Hotfix** for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**

Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

**Note:** The "`cpopenssl version`" command would still show "`OpenSSL 1.1.1w`" because the fix for CVE-2024-2511 is a patch in the Check Point code and not an update for the OpenSSL package.

## Article Properties
- **Access Level:** General  
- **Severity:** Low  
- **Status:** Approved  
- **Date Created:** 2024-05-22  
- **Last Modified:** 2025-02-09