Brute-force attack in FortiOS and FortiProxy



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-43947
CWE-ID CWE-307
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 FortiOS
Operating systems & Components / Operating system

FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Fortinet, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Restriction of Excessive Authentication Attempts

EUVDB-ID: #VU74856

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-43947

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a brute-force attack.

The vulnerability exist due to improper restriction of excessive authentication attempts in administrative interface. A remote attacker with access to the administrative interface can perform a brute-force attack and gain unauthorized access to the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.2.0 - 7.2.3

FortiProxy: 1.0.0 - 7.2.1

CPE2.3 External links

https://fortiguard.fortinet.com/psirt/FG-IR-22-444


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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