> Source: [sk182320](https://support.checkpoint.com/results/sk/sk182320)

# sk182320 - Check Point Response to CVE-2024-2511 - OpenSSL unbounded memory growth with session handling in TLSv1.3

| Property | Value |
|----------|-------|
| Solution ID | sk182320 |
| Date Created | 2024-05-22 |
| Last Modified | 2025-02-09 |
| Technical Level | General |
| Products | Security Gateway, Security Management Server |
| Versions | R81.20, R81.10 (EOS), R81.20, R81 (EOS), R81.10 (EOS), R81 (EOS) |

## 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.

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