Authentication bypass in FortiMail



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-47539
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Fortinet FortiMail
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU84450

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-47539

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing HTTP requests in FortiMail configured with RADIUS authentication and remote_wildcard enabled. A remote non-authenticated attacker can bypass authentication process and login as administrator.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiMail: 7.4.0

CPE2.3 External links

http://www.fortiguard.com/psirt/FG-IR-23-439


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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