Vulnerability identifier: #VU74994

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29056

CWE-ID: CWE-307

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fortinet FortiMail
Server applications / IDS/IPS systems, Firewalls and proxy servers
FortiDeceptor
Client/Desktop applications / Other client software
FortiAuthenticator
Client/Desktop applications / Other client software

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper restriction of excessive authentication attempts. A remote attacker can send numerous HTTP requests to the login form and partially exhaust CPU and memory resources.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiMail: 5.4.0 - 6.4.0

FortiDeceptor: 1.0.0 - 3.1.1

FortiAuthenticator: 5.1.0 - 6.4.6

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External links
http://fortiguard.com/psirt/FG-IR-20-078

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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.