Remote code execution in FortiOS and FortiProxy in deep inspection mode
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-33308 |
| CWE-ID | CWE-121 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
FortiOS Operating systems & Components / Operating system FortiProxy Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
1) Stack-based buffer overflow
EUVDB-ID: #VU78112
Risk: Critical
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-33308
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing specially crafted packets. A remote unauthenticated attacker can send specially crafted packets to the device having proxy policies or firewall policies with proxy mode alongside SSL deep packet inspection, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortiOS: 7.0.0 - 7.2.3
FortiProxy: 7.0.0 - 7.2.2
External linkshttp://fortiguard.fortinet.com/psirt/FG-IR-23-183
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
