Vulnerability identifier: #VU72361

Vulnerability risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33871

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fortinet FortiWeb
Server applications / Remote management servers, RDP, SSH

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing specifically crafted CLI `execute backup-local rename` and `execute backup-local show` operations. A remote user can trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Fortinet FortiWeb: 7.0.0 - 7.0.1, 6.3.6 - 6.3.19, 6.4.0 - 6.4.2

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External links
http://fortiguard.com/psirt/FG-IR-22-164

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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.