HTTP response splitting in Apache HTTP Server - CVE-2023-25690

Vulnerability identifier: #VU73107

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-25690

CWE-ID: CWE-113

Exploitation vector: Remote access

Exploit availability: Public exploit is available

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

The vulnerability exists due to software does not correclty process CRLF character sequences in mod_rewrite and mod_proxy. A remote attacker 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.

Apache HTTP Server
IBM HTTP Server
Oracle Linux
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
Gentoo Linux
Amazon Linux AMI
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Software Development Kit 12
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Anolis OS
SUSE Enterprise Storage
IBM i
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
Oracle Solaris
SUSE Linux Enterprise Server 12 SP2 BCL
SUSE Linux Enterprise Server 12 SP4 ESPOS
SUSE Linux Enterprise Server 12 SP4 LTSS
Slackware Linux
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
Basesystem Module
Server Applications Module
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openEuler
Fedora
JBoss Core Services
Dell Secure Connect Gateway
IBM Rational Build Forge
Oracle Communications Session Report Manager
Infrastructure Technology
Oracle HTTP Server
IBM Cloud Pak for Business Automation
IBM Tivoli Monitoring
IBM Power Hardware Management Console (HMC)
Tenable.sc
IBM Qradar SIEM
Cloud Pak for Security (CP4S)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
apache2 (Ubuntu package)
jbcs-httpd24-openssl-pkcs11 (Red Hat package)
jbcs-httpd24-openssl-chil (Red Hat package)
jbcs-httpd24-mod_proxy_cluster (Red Hat package)
jbcs-httpd24-apr-util (Red Hat package)
mod_http2
http2 (Red Hat package)
mod_http2 (Red Hat package)
jbcs-httpd24-mod_http2 (Red Hat package)
mod_md
jbcs-httpd24-mod_md (Red Hat package)
httpd
httpd-devel
httpd-tools
mod_ldap
httpd-manual
mod_proxy_html
mod_session
mod_ssl
httpd (Red Hat package)
apache2-debugsource
apache2-doc
apache2-worker-debuginfo
apache2-utils-debuginfo
apache2-utils
apache2
apache2-prefork-debuginfo
apache2-worker
apache2-debuginfo
apache2-prefork
apache2-example-pages
apache2-devel
httpd24-httpd (Red Hat package)
httpd-filesystem
httpd-debugsource
httpd-debuginfo
httpd-help
jbcs-httpd24-httpd (Red Hat package)
apache2-event
apache2-event-debuginfo
www-servers/apache
apache2 (Debian package)
httpd24
jbcs-httpd24-mod_security (Red Hat package)
jbcs-httpd24-curl (Red Hat package)
Zimbra Collaboration
Oracle Communications Element Manager
HP-UX
IBM Cloud Pak for Watson AIOps
XtremIO X2
Maximo Application Suite - IoT Component
NetWorker Management Console (NMC)
Oracle Enterprise Manager Ops Center
IBM DS8000 Hardware Management Console
IBM Cloud Pak System

Install updates from vendor's website.

Apache HTTP Server - update to 2.4.56
JBoss Core Services - update to 2.4.51 SP2
Dell Secure Connect Gateway - update to 5.16
Tenable.sc - addressed in versions Patch SC-202303.2, 6.1.0
IBM Rational Build Forge - update to 8.0.0.24
IBM Qradar SIEM - update to 7.5.0 Update Pack 5 IF02
Zimbra Collaboration - addressed in versions 8.8.15 Patch 40, 9.0.0 Patch 33, 10.0.1
IBM Cloud Pak for Business Automation - addressed in versions 21.0.3.20, 22.0.2.4
apache2 (Ubuntu package) - addressed in versions Ubuntu Pro, 2.4.29-1ubuntu4.27, 2.4.41-4ubuntu3.14, 2.4.52-1ubuntu4.4, 2.4.54-2ubuntu1.2
jbcs-httpd24-openssl-pkcs11 (Red Hat package) - addressed in versions 0.4.10-33.el7jbcs, 0.4.10-33.el8jbcs
jbcs-httpd24-openssl-chil (Red Hat package) - addressed in versions 1.0.0-18.el7jbcs, 1.0.0-18.el8jbcs
jbcs-httpd24-mod_proxy_cluster (Red Hat package) - addressed in versions 1.3.18-2.el7jbcs, 1.3.18-2.el8jbcs
jbcs-httpd24-apr-util (Red Hat package) - addressed in versions 1.6.1-101.el7jbcs, 1.6.1-101.el8jbcs
Cloud Pak for Security (CP4S) - update to 1.10.12.0
mod_http2 - update to 1.15.7-5
http2 (Red Hat package) - addressed in versions 1.15.19-3.el9_0.5, 1.15.19-3.el9_1.5
mod_http2 (Red Hat package) - update to 1.15.19-5.el9
jbcs-httpd24-mod_http2 (Red Hat package) - addressed in versions 1.15.19-23.el7jbcs, 1.15.19-23.el8jbcs
mod_md - update to 2.0.8-8
IBM Cloud Pak System - update to 2.3.4.0
jbcs-httpd24-mod_md (Red Hat package) - addressed in versions 2.4.0-20.el7jbcs, 2.4.0-20.el8jbcs
httpd - addressed in versions 2.4.6-98, 2.4.37-51.0.1
httpd-devel - addressed in versions 2.4.6-98, 2.4.37-51.0.1
httpd-tools - addressed in versions 2.4.6-98, 2.4.37-51.0.1
mod_ldap - addressed in versions 2.4.6-98, 2.4.37-51.0.1
httpd-manual - addressed in versions 2.4.6-98, 2.4.37-51.0.1
mod_proxy_html - addressed in versions 2.4.6-98, 2.4.37-51.0.1
mod_session - addressed in versions 2.4.6-98, 2.4.37-51.0.1
mod_ssl - addressed in versions 2.4.6-98, 2.4.37-51.0.1
httpd (Red Hat package) - addressed in versions 2.4.6-98.el7_9.7, 2.4.51-7.el9_0.4, 2.4.53-7.el9_1.5, 2.4.57-5.el9
apache2-debugsource - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-doc - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-worker-debuginfo - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-utils-debuginfo - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-utils - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2 - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-prefork-debuginfo - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-worker - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-debuginfo - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-prefork - addressed in versions 2.4.23-29.97.1, 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-example-pages - addressed in versions 2.4.23-29.97.1, 2.4.51-35.25.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-devel - addressed in versions 2.4.33-150000.3.75.1, 2.4.51-35.25.1, 2.4.51-150200.3.56.1, 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
httpd24-httpd (Red Hat package) - update to 2.4.34-23.el7.6
httpd-filesystem - update to 2.4.37-51.0.1
httpd - update to 2.4.43-21
mod_md - update to 2.4.43-21
httpd-devel - update to 2.4.43-21
mod_session - update to 2.4.43-21
mod_ssl - update to 2.4.43-21
httpd-tools - update to 2.4.43-21
httpd-debugsource - update to 2.4.43-21
mod_ldap - update to 2.4.43-21
mod_proxy_html - update to 2.4.43-21
httpd-debuginfo - update to 2.4.43-21
httpd-filesystem - update to 2.4.43-21
httpd-help - update to 2.4.43-21
jbcs-httpd24-httpd (Red Hat package) - addressed in versions 2.4.51-39.el7jbcs, 2.4.51-39.el8jbcs
apache2-event - addressed in versions 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
apache2-event-debuginfo - addressed in versions 2.4.51-150400.6.11.1, 2.4.66-150400.6.57.1
www-servers/apache - update to 2.4.56
httpd - update to 2.4.56
httpd - update to 2.4.56-1
httpd - addressed in versions 2.4.56-1.fc36, 2.4.56-1.fc37, 2.4.56-1.fc38
apache2 (Debian package) - update to 2.4.56-1~deb11u1
httpd24 - update to 2.4.56-1.100
jbcs-httpd24-mod_security (Red Hat package) - addressed in versions 2.9.3-24.el7jbcs, 2.9.3-24.el8jbcs
IBM Cloud Pak for Watson AIOps - update to 3.7.1
IBM Tivoli Monitoring - update to 6.3.0.7 Plus Service Pack 5
XtremIO X2 - update to 6.4.2-13
jbcs-httpd24-curl (Red Hat package) - addressed in versions 8.0.1-1.el7jbcs, 8.0.1-1.el8jbcs
IBM HTTP Server - addressed in versions 8.5.5.24, 9.0.5.16
Maximo Application Suite - IoT Component - addressed in versions 8.7.20, 8.8.16, 9.0.6
IBM Power Hardware Management Console (HMC) - addressed in versions 9.2.950.0 SP3, 10.1.1020.0 SP1, 10.2.1040.0
NetWorker Management Console (NMC) - update to 19.9.0.1
IBM DS8000 Hardware Management Console - update to 89.33.34.0

• Exploit #10953 - CVE-2023-25690 () (December 6, 2024)
• Exploit #9144 - CVE-2023-25690-POC (CVE 2023 25690 Proof of concept - mod_proxy vulnerable configuration on Apache HTTP Server versions 2.4.0 - 2.4.55 leads to HTTP Request Smuggling vulnerability.) (June 26, 2023)

• https://httpd.apache.org/security/vulnerabilities_24.html

• HTTP response splitting vulnerabilities in Apache HTTP Server
• Slackware Linux update for httpd
• Ubuntu update for apache2
• HTTP response splitting in IBM HTTP Server
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• Multiple vulnerabilities in Tenable.sc
• Ubuntu update for apache2
• Amazon Linux AMI update for httpd24
• Debian update for apache2
• SUSE update for apache2
• Tenable.sc update for Apache HTTP server
• SUSE update for apache2
• Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions update for the httpd:2.4 module
• Red Hat Enterprise Linux 7 update for httpd
• Red Hat Enterprise Linux 8.6 Extended Update Support update for the httpd:2.4 module
• Red Hat Enterprise Linux 8.4 Extended Update Support update for the httpd:2.4 module
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Red Hat Enterprise Linux update for httpd
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Multiple vulnerabilities in Oracle Communications Session Report Manager
• Multiple vulnerabilities in Oracle Communications Element Manager
• Multiple vulnerabilities in Oracle Solaris third-party software
• Red Hat Enterprise Linux 9 update for httpd
• Multiple vulnerabilities in Oracle Linux
• Multiple vulnerabilities in IBM Cloud Pak for Watson AIOps
• Multiple vulnerabilities in IBM Cloud Pak for Business Automation
• Red Hat Software Collections update for httpd24-httpd
• Multiple vulnerabilities in Zimbra Collaboration
• IBM QRadar SIEM update for Apache HTTP Server
• Red Hat JBoss Core Services update for Apache HTTP Server
• Multiple vulnerabilities in IBM Cloud Pak for Security (CP4S)
• HTTP response splitting in IBM Power Hardware Management Console (HMC)
• Multiple vulnerabilities in IBM DS8000 Hardware Management Console (HMC)
• Multiple vulnerabilities in Oracle HTTP Server
• Multiple vulnerabilities in Dell Secure Connect Gateway
• Multiple vulnerabilities in Dell NetWorker Management Console (NMC)
• Fedora 36 update for httpd
• Fedora 38 update for httpd
• Fedora 37 update for httpd
• Multiple vulnerabilities in IBM Tivoli Monitoring
• Gentoo update for Apache HTTPD
• HTTP response splitting in IBM i
• Multiple vulnerabilities in Infrastructure Technology
• Multiple vulnerabilities in IBM Rational Build Forge
• Red Hat Enterprise Linux 9 update for httpd and mod_http2
• HP-UX update for Apache Web Server
• openEuler update for httpd
• Amazon Linux AMI update for httpd
• HTTP response splitting in IBM Cloud Pak System
• Multiple vulnerabilities in Dell XtremIO X2
• Multiple vulnerabilities in IBM Maximo Application Suite - IoT Component
• Anolis OS update for httpd:2.4 module
• Anolis OS update for httpd
• HTTP response splitting in Oracle Enterprise Manager Ops Center
• SUSE update for apache2