HTTP response splitting in Apache HTTP Server - CVE-2024-42516

 

HTTP response splitting in Apache HTTP Server - CVE-2024-42516

Published: July 10, 2025 / Updated: July 10, 2025


Vulnerability identifier: #VU112734
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N]
CVE-ID: CVE-2024-42516
CWE-ID: CWE-113
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correctly process CRLF character sequences. A remote attacker with ability to manipulate the Content-Type response headers of applications hosted or proxied by the server can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Note, this vulnerability exists due a missing fix for #VU88151 (CVE-2023-38709).


Affected software

Apache HTTP Server
IBM HTTP Server
Gentoo Linux
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
F5OS
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Anolis OS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Ubuntu
SUSE Package Hub 15
Server Applications Module
Basesystem Module
openSUSE Leap
openEuler
Fedora
SecurityCenter
EasyApache
WebSphere Remote Server
IBM Rational ClearCase
IBM Rational ClearQuest
Oracle HTTP Server
IBM Business Automation Workflow
IBM Tivoli Monitoring
Traffix SDC
IBM Tivoli Netcool Configuration Manager
DevOps Code ClearCase
BIG-IP
mod_http2
mod_md
apache2 (Ubuntu package)
httpd
httpd-filesystem
mod_ssl
httpd-devel
httpd-tools
mod_ldap
mod_proxy_html
mod_session
httpd-manual
httpd-debugsource
httpd-debuginfo
httpd-help
apache2-worker-debuginfo
apache2-debuginfo
apache2-tls13-prefork-debuginfo
apache2-prefork
apache2-debugsource
apache2-tls13-worker-debuginfo
apache2-utils
apache2-tls13-debuginfo
apache2-tls13
apache2-tls13-devel
apache2-tls13-utils-debuginfo
apache2-example-pages
apache2-tls13-doc
apache2-doc
apache2
apache2-devel
apache2-tls13-example-pages
apache2-utils-debuginfo
apache2-tls13-prefork
apache2-worker
apache2-prefork-debuginfo
apache2-tls13-debugsource
apache2-tls13-utils
apache2-tls13-worker
apache2-event-debuginfo
apache2-event
apache2-prefork-debugsource
apache2-worker-debugsource
apache2-manual
apache2-utils-debugsource
apache2-event-debugsource
httpd-core
mod_lua
httpd-doc
httpd (Red Hat package)
www-servers/apache

How to mitigate CVE-2024-42516

Install updates from vendor's website.

Apache HTTP Server - update to 2.4.64
SecurityCenter - update to SC-202508.1
EasyApache - update to 4 25-24
IBM HTTP Server - addressed in versions 8.5.5.29, 9.0.5.25
mod_http2 - update to 1.15.7-10
mod_md - update to 2.0.8-8
apache2 (Ubuntu package) - addressed in versions 2.4.7-1ubuntu4.22+esm12, 2.4.18-2ubuntu3.17+esm16, 2.4.18-2ubuntu3.17+esm17, 2.4.29-1ubuntu4.27+esm6, 2.4.29-1ubuntu4.27+esm7, 2.4.29-1ubuntu4.27+esm8, 2.4.41-4ubuntu3.23+esm2, 2.4.41-4ubuntu3.23+esm3, 2.4.52-1ubuntu4.15, 2.4.58-1ubuntu8.7, 2.4.63-1ubuntu1.1
httpd - addressed in versions 2.4.37-655.0.1, 2.4.62-3
httpd-filesystem - addressed in versions 2.4.37-655.0.1, 2.4.62-3
mod_ssl - addressed in versions 2.4.37-655.0.1, 2.4.62-3
httpd-devel - addressed in versions 2.4.37-655.0.1, 2.4.62-3
httpd-tools - addressed in versions 2.4.37-655.0.1, 2.4.62-3
mod_ldap - addressed in versions 2.4.37-655.0.1, 2.4.62-3
mod_proxy_html - addressed in versions 2.4.37-655.0.1, 2.4.62-3
mod_session - addressed in versions 2.4.37-655.0.1, 2.4.62-3
httpd-manual - addressed in versions 2.4.37-655.0.1, 2.4.62-3
httpd-debugsource - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd-debuginfo - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd-devel - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd-tools - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
mod_ldap - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
mod_md - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
mod_proxy_html - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
mod_session - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
mod_ssl - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd-filesystem - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
httpd-help - addressed in versions 2.4.43-28, 2.4.51-25, 2.4.58-10
apache2-worker-debuginfo - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-debuginfo - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-prefork-debuginfo - update to 2.4.51-35.69.1
apache2-prefork - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-debugsource - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-worker-debuginfo - update to 2.4.51-35.69.1
apache2-utils - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-debuginfo - update to 2.4.51-35.69.1
apache2-tls13 - update to 2.4.51-35.69.1
apache2-tls13-devel - update to 2.4.51-35.69.1
apache2-tls13-utils-debuginfo - update to 2.4.51-35.69.1
apache2-example-pages - addressed in versions 2.4.51-35.69.1, 2.4.51-150400.6.46.1, 2.4.66-150400.6.57.1
apache2-tls13-doc - update to 2.4.51-35.69.1
apache2-doc - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.66-150400.6.57.1
apache2 - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-devel - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-example-pages - update to 2.4.51-35.69.1
apache2-utils-debuginfo - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-prefork - update to 2.4.51-35.69.1
apache2-worker - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-prefork-debuginfo - addressed in versions 2.4.51-35.69.1, 2.4.51-150200.3.82.1, 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-tls13-debugsource - update to 2.4.51-35.69.1
apache2-tls13-utils - update to 2.4.51-35.69.1
apache2-tls13-worker - update to 2.4.51-35.69.1
apache2-event-debuginfo - addressed in versions 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-event - addressed in versions 2.4.51-150400.6.46.1, 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1, 2.4.66-150400.6.57.1
apache2-prefork-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
apache2-worker-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
apache2-manual - update to 2.4.58-150600.5.35.1
apache2-utils-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
apache2-event-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
httpd-core - update to 2.4.62-3
mod_lua - update to 2.4.62-3
httpd-doc - update to 2.4.62-3
httpd (Red Hat package) - addressed in versions 2.4.63-1.el10_0.4, 2.4.63-13.el10_2.4
httpd - update to 2.4.64-1.fc41
www-servers/apache - update to 2.4.68
IBM Tivoli Monitoring - update to 6.3.0.7 Plus Service Pack 5

External References

Related Security Bulletins