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CVE-2022-42472

A improper neutralization of crlf sequences in http headers ('http response splitting') vulnerability in Fortinet FortiOS 7.2.0 through…

Medium4.0EPSS 0.46%
Published
Updated
Reserved
Assigned by
fortinet

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.

Scores

CVSS scores of CVE-2022-42472, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Medium4.0CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C
NVDNVD · Modified3.1Medium5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.46% · top 60% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.

Weakness

Affected products

  • Fortinet · FortiProxy

    • affected 7.2.0 – ≤ 7.2.1
    • affected 7.0.0 – ≤ 7.0.7
    • affected 2.0.0 – ≤ 2.0.10
    • affected 1.2.1 – ≤ 1.2.13
    • affected 01.02.00
    • affected 1.1.4 – ≤ 1.1.6
    • affected 01.01.00 – ≤ 01.01.03

  • Fortinet · FortiOS

    • affected 7.2.0 – ≤ 7.2.2
    • affected 7.0.0 – ≤ 7.0.8
    • affected 6.4.0 – ≤ 6.4.12
    • affected 6.2.0 – ≤ 6.2.17
    • affected 6.0.0 – ≤ 6.0.18

What to do

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

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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CVE-2022-42472 badge
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Record last updated .