> Source: [sk165875](https://support.checkpoint.com/results/sk/sk165875)

# sk165875 - Check Point Response to CVE-2020-8597 - PPP buffer overflow vulnerability

| Property | Value |
|----------|-------|
| Solution ID | sk165875 |
| Date Created | 2020-03-19 |
| Last Modified | 2025-02-09 |
| Technical Level | General |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| OS | Gaia |

## Symptoms

- A buffer overflow flaw was found in the "ppp" package.  
Data confidentiality and integrity, as well as system availability, are all at risk with this vulnerability.  
This issue received the ID [CVE-2020-8597](https://www.cve.org/CVERecord?id=CVE-2020-8597).

## Cause

The bounds check for the `rhostname` was improperly constructed in the EAP request and response functions, which could allow a buffer overflow to occur.  

Configuring to connect to a malicious server can expose the system to this vulnerability.  

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## Solution

This problem was fixed.   

**For Gaia OS,** the fix is included in:

* [Jumbo Hotfix Accumulator for R80.40](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk165456) since Take 25
* [Jumbo Hotfix Accumulator for R80.30](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk153152) since Take 195
* [Jumbo Hotfix Accumulator for R80.20](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk137592) since Take 149
* [Jumbo Hotfix Accumulator for R80.10](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk116380) since Take 278

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**For Gaia Embedded,** this problem was fixed for the 1500 appliance. This fix is included in:

* [R80.20.02 for Small and Medium Business Appliances](https://supportcenter.us.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk165454)

For other Quantum Spark appliances and versions:   

* [R77.20.80 Build 990172500 for 600/1100 Appliances](https://supportcenter.checkpoint.com/supportcenter/portal/role/supportcenterUser/page/default.psml/media-type/html?action=portlets.DCFileAction&eventSubmit_doGetdcdetails=&fileid=105393)
* [R77.20.81 Build 990172605 for 1200R Appliances](https://supportcenter.checkpoint.com/supportcenter/portal/role/supportcenterUser/page/default.psml/media-type/html?action=portlets.DCFileAction&eventSubmit_doGetdcdetails=&fileid=105394)
* [R77.20.81 build 990172605 1200R Appliance SmartUpdate package](https://supportcenter.checkpoint.com/supportcenter/portal?action=portlets.DCFileAction&eventSubmit_doGetdcdetails=&fileid=107995)
* [R77.20.87 Build B990173042 for 700/900/1400](https://supportcenter.us.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk153433)

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