CVE-2022-42472

Published Feb 16, 2023 CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed

Description

A improper neutralization of crlf sequences in http headers ('http response splitting') vulnerability in Fortinet FortiOS 7.2.0 through 7.2.2, FortiOS 7.0.0 through 7.0.8, FortiOS 6.4.0 through 6.4.12, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through 7.2.1, FortiProxy 7.0.0 through 7.0.7, FortiProxy 2.0.0 through 2.0.10, FortiProxy 1.2 all versions, FortiProxy 01.02 all versions, FortiProxy 1.1 all versions, FortiProxy 01.01 all versions may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Fortinet

FortiProxy

unaffected

Version	Status	Constraints
`7.2.0`	affected	≤ 7.2.1
`7.0.0`	affected	≤ 7.0.7
`2.0.0`	affected	≤ 2.0.10
`1.2.1`	affected	≤ 1.2.13
`01.02.00`	affected	—
`1.1.4`	affected	≤ 1.1.6
`01.01.00`	affected	≤ 01.01.03

Fortinet

FortiOS

unaffected

Version	Status	Constraints
`7.2.0`	affected	≤ 7.2.2
`7.0.0`	affected	≤ 7.0.8
`6.4.0`	affected	≤ 6.4.12
`6.2.0`	affected	≤ 6.2.17
`6.0.0`	affected	≤ 6.0.18

Configuration 1 [-]

OR	cpe:2.3:a:fortinet:fortiproxy::::::::
	cpe:2.3:a:fortinet:fortiproxy::::::::
	cpe:2.3:a:fortinet:fortiproxy::::::::
	cpe:2.3:a:fortinet:fortiproxy::::::::
	cpe:2.3:a:fortinet:fortiproxy:7.2.0:::::::*
	cpe:2.3:a:fortinet:fortiproxy:7.2.1:::::::*

Configuration 2 [-]

OR	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios::::::::
	cpe:2.3:o:fortinet:fortios:7.2.0:::::::*
	cpe:2.3:o:fortinet:fortios:7.2.1:::::::*
	cpe:2.3:o:fortinet:fortios:7.2.2:::::::*

No data.

No data available yet.

Remediation

Vendor Solution

Upgrade to FortiProxy version 7.2.2 or above Upgrade to FortiProxy version 7.0.8 or above Upgrade to FortiProxy version 2.0.11 or above Upgrade to FortiOS version 7.2.3 or above Upgrade to FortiOS version 7.0.9 or above Upgrade to FortiOS version 6.4.13 or above

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2022-45542	A improper neutralization of crlf sequences in http headers ('http response splitting') in Fortinet FortiOS versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.11, 6.2.0 through 6.2.12, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, 7.0.0 through 7.0.7, 2.0.0 through 2.0.10, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6 may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.464% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://fortiguard.com/psirt/FG-IR-22-362

History

Oct 22, 2026 2:00 PM Description updated. Affected versions updated View changes

Type	Values Removed	Values Added
Description	A improper neutralization of crlf sequences in http headers ('http response splitting') in Fortinet FortiOS versions 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.11, 6.2.0 through 6.2.12, 6.0.0 through 6.0.16, FortiProxy 7.2.0 through 7.2.1, 7.0.0 through 7.0.7, 2.0.0 through 2.0.10, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6 may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.	A improper neutralization of crlf sequences in http headers ('http response splitting') vulnerability in Fortinet FortiOS 7.2.0 through 7.2.2, FortiOS 7.0.0 through 7.0.8, FortiOS 6.4.0 through 6.4.12, FortiOS 6.2 all versions, FortiOS 6.0 all versions, FortiProxy 7.2.0 through 7.2.1, FortiProxy 7.0.0 through 7.0.7, FortiProxy 2.0.0 through 2.0.10, FortiProxy 1.2 all versions, FortiProxy 01.02 all versions, FortiProxy 1.1 all versions, FortiProxy 01.01 all versions may allow an authenticated and remote attacker to perform an HTTP request splitting attack which gives attackers control of the remaining headers and body of the response.
CPEs		cpe:2.3:a:fortinet:fortiproxy:01.01.00:::::::* cpe:2.3:a:fortinet:fortiproxy:01.01.01:::::::* cpe:2.3:a:fortinet:fortiproxy:01.01.02:::::::* cpe:2.3:a:fortinet:fortiproxy:01.01.03:::::::* cpe:2.3:a:fortinet:fortiproxy:01.02.00:::::::* cpe:2.3:a:fortinet:fortiproxy:1.1.4:::::::* cpe:2.3:a:fortinet:fortiproxy:1.1.5:::::::* cpe:2.3:a:fortinet:fortiproxy:1.1.6:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.10:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.11:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.12:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.13:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.1:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.2:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.3:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.4:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.5:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.6:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.7:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.8:::::::* cpe:2.3:a:fortinet:fortiproxy:1.2.9:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.0:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.10:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.1:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.2:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.3:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.4:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.5:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.6:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.7:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.8:::::::* cpe:2.3:a:fortinet:fortiproxy:2.0.9:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.0:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.1:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.2:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.3:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.4:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.5:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.6:::::::* cpe:2.3:a:fortinet:fortiproxy:7.0.7:::::::* cpe:2.3:o:fortinet:fortios:6.0.0:::::::* cpe:2.3:o:fortinet:fortios:6.0.10:::::::* cpe:2.3:o:fortinet:fortios:6.0.11:::::::* cpe:2.3:o:fortinet:fortios:6.0.12:::::::* cpe:2.3:o:fortinet:fortios:6.0.13:::::::* cpe:2.3:o:fortinet:fortios:6.0.14:::::::* cpe:2.3:o:fortinet:fortios:6.0.15:::::::* cpe:2.3:o:fortinet:fortios:6.0.16:::::::* cpe:2.3:o:fortinet:fortios:6.0.17:::::::* cpe:2.3:o:fortinet:fortios:6.0.18:::::::* cpe:2.3:o:fortinet:fortios:6.0.1:::::::* cpe:2.3:o:fortinet:fortios:6.0.2:::::::* cpe:2.3:o:fortinet:fortios:6.0.3:::::::* cpe:2.3:o:fortinet:fortios:6.0.4:::::::* cpe:2.3:o:fortinet:fortios:6.0.5:::::::* cpe:2.3:o:fortinet:fortios:6.0.6:::::::* cpe:2.3:o:fortinet:fortios:6.0.7:::::::* cpe:2.3:o:fortinet:fortios:6.0.8:::::::* cpe:2.3:o:fortinet:fortios:6.0.9:::::::* cpe:2.3:o:fortinet:fortios:6.2.0:::::::* cpe:2.3:o:fortinet:fortios:6.2.10:::::::* cpe:2.3:o:fortinet:fortios:6.2.11:::::::* cpe:2.3:o:fortinet:fortios:6.2.12:::::::* cpe:2.3:o:fortinet:fortios:6.2.13:::::::* cpe:2.3:o:fortinet:fortios:6.2.14:::::::* cpe:2.3:o:fortinet:fortios:6.2.15:::::::* cpe:2.3:o:fortinet:fortios:6.2.16:::::::* cpe:2.3:o:fortinet:fortios:6.2.17:::::::* cpe:2.3:o:fortinet:fortios:6.2.1:::::::* cpe:2.3:o:fortinet:fortios:6.2.2:::::::* cpe:2.3:o:fortinet:fortios:6.2.3:::::::* cpe:2.3:o:fortinet:fortios:6.2.4:::::::* cpe:2.3:o:fortinet:fortios:6.2.5:::::::* cpe:2.3:o:fortinet:fortios:6.2.6:::::::* cpe:2.3:o:fortinet:fortios:6.2.7:::::::* cpe:2.3:o:fortinet:fortios:6.2.8:::::::* cpe:2.3:o:fortinet:fortios:6.2.9:::::::* cpe:2.3:o:fortinet:fortios:6.4.0:::::::* cpe:2.3:o:fortinet:fortios:6.4.10:::::::* cpe:2.3:o:fortinet:fortios:6.4.11:::::::* cpe:2.3:o:fortinet:fortios:6.4.12:::::::* cpe:2.3:o:fortinet:fortios:6.4.1:::::::* cpe:2.3:o:fortinet:fortios:6.4.2:::::::* cpe:2.3:o:fortinet:fortios:6.4.3:::::::* cpe:2.3:o:fortinet:fortios:6.4.4:::::::* cpe:2.3:o:fortinet:fortios:6.4.5:::::::* cpe:2.3:o:fortinet:fortios:6.4.6:::::::* cpe:2.3:o:fortinet:fortios:6.4.7:::::::* cpe:2.3:o:fortinet:fortios:6.4.8:::::::* cpe:2.3:o:fortinet:fortios:6.4.9:::::::* cpe:2.3:o:fortinet:fortios:7.0.0:::::::* cpe:2.3:o:fortinet:fortios:7.0.1:::::::* cpe:2.3:o:fortinet:fortios:7.0.2:::::::* cpe:2.3:o:fortinet:fortios:7.0.3:::::::* cpe:2.3:o:fortinet:fortios:7.0.4:::::::* cpe:2.3:o:fortinet:fortios:7.0.5:::::::* cpe:2.3:o:fortinet:fortios:7.0.6:::::::* cpe:2.3:o:fortinet:fortios:7.0.7:::::::* cpe:2.3:o:fortinet:fortios:7.0.8:::::::*