Vulnerability identifier: #VU72347

Vulnerability risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42472

CWE-ID: CWE-113

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote user to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly process CRLF character sequences. A remote user can send specially crafted request containing CRLF sequence and inject arbitrary HTTP headers.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 7.2.0 - 7.2.2, 7.0.0 - 7.0.8, 6.0.0 - 6.0.16, 6.2.0 - 6.2.12, 6.4.0 - 6.4.11

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External links
http://fortiguard.com/psirt/FG-IR-22-362

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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.