Red Hat JBoss Core Services Apache HTTP Server 2.4.37 Service Pack 10 Release Notes

Red Hat JBoss Core Services 2.4.37

For Use with the Red Hat JBoss Core Services Apache HTTP Server 2.4.37

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These release notes contain important information related to the Red Hat JBoss Core Services Apache HTTP Server 2.4.37.


Welcome to the Red Hat JBoss Core Services version 2.4.37 Service Pack 10 release.

Red Hat JBoss Core Services Apache HTTP Server is an open source web server developed by the Apache Software Foundation. Features of Apache HTTP Server include:

  • Implements the current HTTP standards, including HTTP/1.1 and HTTP/2.
  • Transport Layer Security (TLS) encryption support though OpenSSL, providing secure connections between the web server and web clients.
  • Extendable though modules, some of which are included with the Red Hat JBoss Core Services Apache HTTP Server.

Red Hat Enterprise Linux 6 is no longer supported and subsequently was removed from the documentation.

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Chapter 1. Installing the Red Hat JBoss Core Services 2.4.37

The Apache HTTP Server 2.4.37 can be installed using one of the following sections of the installation guide:

Chapter 2. Upgrading to the Red Hat JBoss Core Services Apache HTTP Server 2.4.37

For systems where an earlier version of the Red Hat JBoss Core Services Apache HTTP Server was installed from a .zip archive, upgrading to the Apache HTTP Server 2.4.37 requires:

  1. Installing the Apache HTTP Server 2.4.37.
  2. Setting up the Apache HTTP Server 2.4.37.
  3. Removing the earlier version of Apache HTTP Server.


  • Administrative access (Windows Server)
  • A system where the Red Hat JBoss Core Services Apache HTTP Server 2.4.29 or earlier was installed from a .zip archive.


For systems using the Red Hat JBoss Core Services Apache HTTP Server 2.4.29, the recommended procedure for upgrading to the Apache HTTP Server 2.4.37 is:

  1. Shut down any running instances of Red Hat JBoss Core Services Apache HTTP Server 2.4.29.
  2. Back up the Red Hat JBoss Core Services Apache HTTP Server 2.4.29 installation and configuration files.
  3. Install the Red Hat JBoss Core Services Apache HTTP Server 2.4.37 using the .zip installation method for the current system (see Additional Resources below).
  4. Migrate your configuration from the Red Hat JBoss Core Services Apache HTTP Server version 2.4.29 to version 2.4.37.


    The Apache HTTP Server configuration files may have changed since the Apache HTTP Server 2.4.29 release. It is recommended that you update the 2.4.37 version configuration files, rather than overwrite them with the configuration files from a different version (such as the Apache HTTP Server 2.4.29).

  5. Remove the Red Hat JBoss Core Services Apache HTTP Server 2.4.29 root directory.

Additional Resources

Chapter 3. Security Fixes

This update includes the following security fixes:




httpd: path traversal and file disclosure vulnerability [jbcs-httpd-2.4]



httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" [jbcs-httpd-2.4]



openssl: Read buffer overruns processing ASN.1 strings [jbcs-httpd-2.4]



mod_proxy: Red Hat JBCS: URL normalization issue with dot-dot-semicolon(s) leads to information disclosure [jbcs-httpd-2.4]



curl: Bad connection reuse due to flawed path name checks [jbcs-httpd-2.4]



curl: Content not matching hash in Metalink is not being discarded [jbcs-httpd-2.4]



curl: Metalink download sends credentials [jbcs-httpd-2.4]



httpd: Unexpected URL matching with 'MergeSlashes OFF' [jbcs-httpd-2.4]



httpd: mod_proxy_wstunnel tunneling of non Upgraded connection [jbcs-httpd-2.4]



httpd: mod_session: Heap overflow via a crafted SessionHeader value [jbcs-httpd-2.4]



httpd: mod_session: NULL pointer dereference when parsing Cookie header [jbcs-httpd-2.4]



openssl: integer overflow in CipherUpdate [jbcs-httpd-2.4]



openssl: NULL pointer dereference in X509_issuer_and_serial_hash() [jbcs-httpd-2.4]



pcre: Integer overflow when parsing callout numeric arguments [jbcs-httpd-2.4]



pcre: Buffer over-read in JIT when UTF is disabled and \X or \R has fixed quantifier greater than 1 [jbcs-httpd-2.4]



curl: Incorrect fix for CVE-2021-22898 TELNET stack contents disclosure [jbcs-httpd-2.4]



httpd: mod_proxy NULL pointer dereference [jbcs-httpd-2.4]



httpd: Single zero byte stack overflow in mod_auth_digest [jbcs-httpd-2.4]

Chapter 4. Resolved issues

The following are resolved issues for this release:



Add fix for CVE-2021-41773


[GSS] Segmentation fault in ap_increment_counts


Rebase curl to 7.78.0


Segmentation fault during string tokenization


SSLProtocol with based virtual hosts


mod_proxy_http fills file system with /tmp/modproxy.tmp.* files


prunsrv stop timeout not honored


Upgrade Apache Commons Daemon JSVC (for Windows) to version 1.2.4


JBoss Service.bat stop fails with an error

Chapter 5. Known issues

There are no known issues for this release.

Chapter 6. Upgraded components

This release includes upgraded versions of the following packages:

ComponentVersionOperating Systems



Microsoft Windows



Microsoft Windows

For a full list of components that are supported in this release of Red Hat JBoss Core Services, see the Core Services Apache HTTP Server Component Details page. Before you attempt to access the Component Details page, you must ensure that you have an active Red Hat subscription and you are logged in to the Red Hat Customer Portal.

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