Main Vulnerability Database Vulnerabilities #VU102595

HTTP response splitting in FortiOS and FortiProxy - CVE-2024-54021

Published: January 14, 2025

Vulnerability identifier: #VU102595

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-54021

CWE-ID: CWE-113

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass the file filter

The vulnerability exists due to software does not correctly process CRLF character sequences. A remote attacker can send a specially crafted request containing CRLF sequence and bypass the file filter.

Affected software

FortiOS
FortiProxy

How to mitigate CVE-2024-54021

Install updates from vendor's website.

FortiOS - addressed in versions 7.2.9, 7.4.5, 7.6.1
FortiProxy - addressed in versions 7.2.12, 7.4.6

External References

https://www.fortiguard.com/psirt/FG-IR-24-282

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