> Source: [sk179705](https://support.checkpoint.com/results/sk/sk179705)

# sk179705 - "HTTP Response Splitting" vulnerability in the Security Gateway portals

| Property | Value |
|----------|-------|
| Solution ID | sk179705 |
| Date Created | 2022-07-20 |
| Last Modified | 2023-04-13 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81.10 (EOS), R81 (EOS) |

## Symptoms

- Various gateway portals are vulnerable to "HTTP Response Splitting" attack.

## Cause

* A change in behavior in these versions:
  * [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 38
  * [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 60
  * [Jumbo Hotfix Accumulator for R80.40](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.40/Default.htm) starting from Take 158
  * [Jumbo Hotfix Accumulator for R80.30](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.30/Default.htm) starting from Take 251

## Solution

This problem was fixed. The fix is included in:

* [R81.20](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk173903)
* [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 79
* [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 77
* [Jumbo Hotfix Accumulator for R80.40](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.40/Default.htm) starting from Take 180
* [Jumbo Hotfix Accumulator for R80.30SP](https://supportcenter.us.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk165312) starting from Take 110
* [Jumbo Hotfix Accumulator for R80.30](https://sc1.checkpoint.com/documents/Jumbo_HFA/R80.30/Default.htm) starting from Take 255

If you choose not to upgrade, Check Point can supply a **Hotfix** . [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).

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