CVE-2024-24795
httpd: HTTP Response Splitting in multiple modules
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 4, 2024
Updated · October 22, 2026
Description
A flaw was found in httpd. An HTTP response splitting in multiple httpd modules may allow an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack.
Statement
This flaw only affects configurations when at least one of the following modules is loaded and being used: mod_authnz_fcgi, mod_cgi, mod_cgid, mod_proxy_fcgi, mod_proxy_scgi and mod_proxy_uwsgi. Additionally, this flaw is only exploitable by a malicious backend in a reverse proxy configuration or an attack against a backend application that inserts headers.
These modules are enabled by default in Red Hat Enterprise Linux 8, 9, and in RHSCL mod_authnz_fcgi is not available in RHEL8 and RHSCL. These modules can be disabled via the configuration file if their functionality is not being used.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
CWE-113 · Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')