Resource management error in Apache HTTP Server - CVE-2025-49630

Vulnerability identifier: #VU112729

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-49630

CWE-ID: CWE-399

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in mod_proxy_http2. A remote attacker can send specially crafted requests to the server and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that the reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".

Apache HTTP Server
Gentoo Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise High Performance Computing 15
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 ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Enterprise Storage
Red Hat Enterprise Linux for IBM z Systems
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Basesystem Module
SUSE Package Hub 15
Server Applications Module
openSUSE Leap
Ubuntu
openEuler
Fedora
SecurityCenter
EasyApache
IBM Power Hardware Management Console (HMC)
IBM Qradar SIEM
Juniper Secure Analytics (JSA)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
mod_http2
http2 (Red Hat package)
mod_http2-debugsource
mod_http2-help
mod_http2-debuginfo
mod_md
apache2 (Ubuntu package)
httpd-manual
httpd
httpd-devel
httpd-tools
mod_ldap
mod_proxy_html
mod_session
mod_ssl
httpd-filesystem
apache2-tls13-doc
apache2-prefork
apache2-tls13-example-pages
apache2-utils-debuginfo
apache2-tls13-utils
apache2-tls13-worker
apache2-tls13-devel
apache2-debuginfo
apache2-worker-debuginfo
apache2-tls13-prefork-debuginfo
apache2-utils
apache2-tls13-worker-debuginfo
apache2-debugsource
apache2-tls13-debuginfo
apache2-tls13-debugsource
apache2-prefork-debuginfo
apache2-worker
apache2-tls13-prefork
apache2-devel
apache2
apache2-tls13
apache2-tls13-utils-debuginfo
apache2-example-pages
apache2-doc
apache2-event-debuginfo
apache2-event
apache2-event-debugsource
apache2-utils-debugsource
apache2-prefork-debugsource
apache2-worker-debugsource
apache2-manual
httpd-core
mod_lua
httpd-doc
www-servers/apache
Total Storage Service Console (TSSC) / TS4500 IMC

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 Qradar SIEM - update to 7.5.0 Update Pack 14 IF01
Juniper Secure Analytics (JSA) - update to 7.5.0 UP14 IF01
IBM Power Hardware Management Console (HMC) - addressed in versions 10.3.1060.0 SP3, 11.1.1110.0
mod_http2 - update to 1.15.7-10
http2 (Red Hat package) - addressed in versions 1.15.19-3.el9_0.7, 1.15.19-4.el9_2.7, 2.0.26-2.el9_4.2, 2.0.26-4.el9_6.1, 2.0.29-2.el10_0.1
mod_http2 - update to 1.15.25-4
mod_http2-debugsource - update to 1.15.25-4
mod_http2-help - update to 1.15.25-4
mod_http2-debuginfo - update to 1.15.25-4
mod_md - update to 2.0.8-8
mod_http2 - addressed in versions 2.0.35-1.fc41, 2.0.35-1.fc42
apache2 (Ubuntu package) - addressed in versions 2.4.18-2ubuntu3.17+esm16, 2.4.29-1ubuntu4.27+esm6, 2.4.41-4ubuntu3.23+esm2, 2.4.52-1ubuntu4.15, 2.4.58-1ubuntu8.7, 2.4.63-1ubuntu1.1
httpd-manual - addressed in versions 2.4.37-655.0.1, 2.4.64-1
httpd - addressed in versions 2.4.37-655.0.1, 2.4.64-1
httpd-devel - addressed in versions 2.4.37-655.0.1, 2.4.64-1
httpd-tools - addressed in versions 2.4.37-655.0.1, 2.4.64-1
mod_ldap - addressed in versions 2.4.37-655.0.1, 2.4.64-1
mod_proxy_html - addressed in versions 2.4.37-655.0.1, 2.4.64-1
mod_session - addressed in versions 2.4.37-655.0.1, 2.4.64-1
mod_ssl - addressed in versions 2.4.37-655.0.1, 2.4.64-1
httpd-filesystem - addressed in versions 2.4.37-655.0.1, 2.4.64-1
apache2-tls13-doc - 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-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-utils - update to 2.4.51-35.69.1
apache2-tls13-worker - update to 2.4.51-35.69.1
apache2-tls13-devel - update to 2.4.51-35.69.1
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-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-tls13-prefork-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-worker-debuginfo - update to 2.4.51-35.69.1
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-debuginfo - update to 2.4.51-35.69.1
apache2-tls13-debugsource - update to 2.4.51-35.69.1
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-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-tls13-prefork - update to 2.4.51-35.69.1
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 - 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 - 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-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-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-event-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
apache2-utils-debugsource - addressed in versions 2.4.58-150600.5.35.1, 2.4.62-150700.4.3.1
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
httpd-core - update to 2.4.64-1
mod_lua - update to 2.4.64-1
httpd-doc - update to 2.4.64-1
www-servers/apache - update to 2.4.68

• https://downloads.apache.org/httpd/CHANGES_2.4
• https://lists.apache.org/thread/5z41bbglxwwh8tqkctc1w1nqolm1jc8x

• Multiple vulnerabilities in Apache HTTP Server
• Ubuntu update for apache2
• cPanel EasyApache4 update for Apache HTTP Server
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• SUSE update for apache2
• Ubuntu update for apache2
• Red Hat Enterprise Linux 10 update for mod_http2
• Anolis OS update for httpd
• openEuler update for mod_http2
• Tenable Security Center update for third-party components
• Red Hat Enterprise Linux 9 update for mod_http2
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Anolis OS update for httpd:2.4 module
• Red Hat Enterprise Linux 9 update for mod_http2
• Red Hat Enterprise Linux 9 update for mod_http2
• Red Hat Enterprise Linux 9 update for mod_http2
• Fedora 42 update for mod_http2
• Fedora 41 update for mod_http2
• Red Hat Enterprise Linux 8 update for the httpd:2.4 module
• Multiple vulnerabilities in IBM Total Storage Service Console (TSSC) / TS4500 IMC
• Multiple vulnerabilities in IBM Power HMC
• Multiple vulnerabilities in IBM QRadar SIEM
• Juniper Secure Analytics update for third-party components
• SUSE update for apache2
• Gentoo update for Apache HTTPD