CVE-2022-42472: fortinet fortios HTTP Request/Response Splitting
Vulnerability summary
CVE-2022-42472 is a medium (CVSS 5.4) HTTP Request/Response Splitting vulnerability in fortinet fortios. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.1% of scored vulnerabilities.
Timeline
- 16-02-2023PublishedVulnerability first disclosed.
- 22-10-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA4.0MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:U/RC:CDiffers
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
0.00 pp
From 0.46% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected systems
Fortinet2 products
- fortiosEOL≥ 7.2.0, ≤ 7.2.2 | ≥ 6.0.0, ≤ 6.0.16 | ≥ 6.0.1, ≤ 6.0.16 | ≥ 6.2.0, ≤ 6.2.12 | ≥ 6.4.0, ≤ 6.4.11 | ≥ 7.0.0, ≤ 7.0.8 | 7.2.0 | 7.2.1 | 7.2.2
- fortiproxy≥ 7.2.0, ≤ 7.2.1 | ≥ 1.1.0, ≤ 1.1.6 | ≥ 1.2.0, ≤ 1.2.13 | ≥ 2.0.0, ≤ 2.0.10 | ≥ 7.0.0, ≤ 7.0.7 | 7.2.0 | 7.2.1
1 vendor · 2 products