# MA-942.062023: MyCERT Advisory - Fortinet Fixes Critical RCE Flaw in Fortigate SSL-VPN Devices

**Date:** 15 Jun 2023  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-942.062023  
**Advisory ID:** MA-942.062023

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**1.0 Introduction**
Recently, Fortinet has released security updates to address a heap-based buffer overflow vulnerability CVE-2023-27997 in FortiOS and FortiProxy.
**2.0 Impact**
An attacker could exploit this vulnerability to take control of an affected system.
**3.0 Affected Products**
- FortiOS-6K7K version 7.0.10
- FortiOS-6K7K version 7.0.5
- FortiOS-6K7K version 6.4.12
- FortiOS-6K7K version 6.4.10
- FortiOS-6K7K version 6.4.8
- FortiOS-6K7K version 6.4.6
- FortiOS-6K7K version 6.4.2
- FortiOS-6K7K version 6.2.9 through 6.2.13
- FortiOS-6K7K version 6.2.6 through 6.2.7
- FortiOS-6K7K version 6.2.4
- FortiOS-6K7K version 6.0.12 through 6.0.16
- FortiOS-6K7K version 6.0.10
- FortiProxy version 7.2.0 through 7.2.3
- FortiProxy version 7.0.0 through 7.0.9
- FortiProxy version 2.0.0 through 2.0.12
- FortiProxy 1.2 all versions
- FortiProxy 1.1 all versions
- FortiOS version 7.2.0 through 7.2.4
- FortiOS version 7.0.0 through 7.0.11
- FortiOS version 6.4.0 through 6.4.12
- FortiOS version 6.2.0 through 6.2.13
- FortiOS version 6.0.0 through 6.0.16
**4.0 Recommendations**
MyCERT encourages users and administrators to review Fortinet security advisory [FG-IR-23-097](https://www.fortiguard.com/psirt/FG-IR-23-097) and apply the necessary updates. For more information, see Fortinet's [Analysis of CVE-2023-27997 and Clarifications on Volt Typhoon Campaign](https://www.fortinet.com/blog/psirt-blogs/analysis-of-cve-2023-27997-and-clarifications-on-volt-typhoon-campaign).
Kindly refer to the URLs below:
- Fortinet security advisory [FG-IR-23-097](https://www.fortiguard.com/psirt/FG-IR-23-097) : <https://www.fortiguard.com/psirt/FG-IR-23-097>
- Fortinet's [Analysis of CVE-2023-27997 and Clarifications on Volt Typhoon Campaign](https://www.fortinet.com/blog/psirt-blogs/analysis-of-cve-2023-27997-and-clarifications-on-volt-typhoon-campaign) : <https://www.fortinet.com/blog/psirt-blogs/analysis-of-cve-2023-27997-and-clarifications-on-volt-typhoon-campaign>
Generally, MyCERT advises the users of this devices to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact MyCERT through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 09:00 -18:00 MYT 
Web: <https://www.mycert.org.my> 
Twitter: <https://twitter.com/mycert> 
Facebook: <https://www.facebook.com/mycert.org.my>
**5.0    References**
- <https://www.cisa.gov/news-events/alerts/2023/06/12/fortinet-releases-security-updates-fortios-and-fortiproxy>
- <https://www.fortiguard.com/psirt/FG-IR-23-097>
- <https://www.fortinet.com/blog/psirt-blogs/analysis-of-cve-2023-27997-and-clarifications-on-volt-typhoon-campaign>