Denial of service in multiple Fortinet products firmware upgrade function
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-33305 |
| CWE-ID | CWE-835 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
FortiOS Operating systems & Components / Operating system FortiProxy Hardware solutions / Routers & switches, VoIP, GSM, etc Fortinet FortiWeb Server applications / Remote management servers, RDP, SSH |
| Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Infinite loop
EUVDB-ID: #VU77959
Risk: Low
CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-33305
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in firmware upgrade function. A remote privileges user can consume all available system resources and cause denial of service conditions via a specially crafted firmware image.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortiOS: 5.0.0 - 7.2.4
FortiProxy: 1.0.0 - 7.2.3
Fortinet FortiWeb: 6.3.0 - 7.2.1
External linkshttp://fortiguard.com/psirt/FG-IR-22-375
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
