#VU54791 Missing Required Cryptographic Step


Published: 2021-07-13

Vulnerability identifier: #VU54791

Vulnerability risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26099

CWE-ID: CWE-325

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fortinet FortiMail
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to missing cryptographic steps in FortiMail IBE. A remote attacker who comes in possession of the encrypted master keys can compromise their confidentiality by observing a few invariant properties of the ciphertext.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiMail: 5.0 - 6.4.4


CPE

External links
http://fortiguard.com/advisory/FG-IR-20-244


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.


Latest bulletins with this vulnerability