Improper Authentication in Fortinet FortiOS



Published: 2020-07-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-12812
CWE ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
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FortiOS
Operating systems & Components / Operating system

Vendor Fortinet, Inc

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Improper Authentication

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-12812

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 in when processing authentication requests in SSL VPN. A remote authenticated attacker can changed the case of their username and gain unauthorized access to the application without being prompted for the second factor of authentication (FortiToken).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.9, 6.2.0, 6.2.1, 6.2.2, 6.2.3, 6.4.0

CPE External links

https://fortiguard.com/psirt/FG-IR-19-283

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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