apache2 (2.4.65-4) unstable; urgency=medium

  Apache2's integration with systemd has been improved,
  and several hardening flags have been preconfigured for
  its services.
  .
  ProtectHome is set to read-only by default.
  As a result, CGI scripts executed via UserDir will not
  be able to modify any content within the /home directory.
  Additionally, WebDAV write access to /home will also be
  disabled by default. Read-write access may be enabled
  by overriding this setting, following a thorough
  risk assessment.
  Additionally, the libapache2-mpm-itk module may be
  considered, particularly in scenarios that require
  per-user process isolation. libapache2-mpm-itk
  allows Apache to run each virtual host or script
  under a separate Unix user and group ID, thereby
  enhancing security by limiting the impact of potential
  vulnerabilities and preventing unauthorized access
  between users. However, its use should be carefully
  evaluated, taking into account potential performance overhead,
  compatibility with other Apache modules, and the findings of
  a thorough risk assessment.
  .
  KeyringMode is set to private by default, which means
  Apache receives its own isolated kernel keyring.
  While this enhances security by preventing unintended key
  sharing, it can break interoperability if Apache needs
  to exchange keys with other services, for example,
  a backend authentication daemon.
  In such cases, it is recommended to share the keyring using
  an intermediate daemon that securely mediates access
  between processes.
  .
  PrivateDevices is set to yes by default;
  If Apache modules or scripts require access to specific
  devices (using hardware crypto modules, or
  interacting directly with webcams), this setting could break
  functionality.  In such cases, it is advisable to expose
  the required devices through a proxy or an agent service.
  In case of CGI modules, it is recommended to use FCGI modules instead,
  with tailored security hardening.
  .
  MemoryDenyWriteExecute is set to yes by default.
  While this enhances security by preventing writable and
  executable memory regions, it may cause issues with modules
  that rely on JIT engines, such as mod_php with JIT-enabled
  PHP, mod_lua, or custom interpreters. In such cases,
  it is recommended to use PHP-FPM or FCGI modules instead.
  .
  ProtectSystem is set to full by default;
  this mounts various system paths like /usr, /boot and
  /etc as read-only, enhancing overall system integrity.
  .
  Some paths were also made inaccessible, including /boot, /root, /etc/apt
  /etc/ssh, and /etc/sudoers*. This may cause certain CGI scripts to fail.
  In such cases, it is recommended to use FCGI modules instead,
  with tailored security hardening.
  .
  Other hardening flags, including DevicePolicy=closed,
  ProtectClock=yes, LockPersonality=yes, ProtectControlGroups=yes,
  ProtectHostname=yes, ProtectKernelLogs=yes, ProtectKernelModules=yes,
  RestrictNamespaces=yes, RestrictRealtime=yes, and
  SystemCallArchitectures=native, RestrictSUIDSGID=yes,
  ProtectProc=invisible, ProcSubset=pid, RemoveIPC=yes
  are generally safe to enable
  and unlikely to cause compatibility problems.
  .
  If you need to override these defaults, you can do
  so by running:
  "sudo systemctl edit apache2.services" or
  "sudo systemctl edit apache2@.services".
  These commands create a drop-in override file located at:
  /etc/systemd/system/<unit-name>.d/override.conf
  Alternatively, you can create or manage this file directly
  using Ansible or other administrative tooling to automate
  configuration changes.

 -- Bastien Roucariès <rouca@debian.org>  Thu, 14 Aug 2025 13:53:43 +0200

apache2 (2.4.65-3) unstable; urgency=medium

  The default LANG environment variable used by Apache,
  and consequently inherited by WebDAV, PHP and certain CGI scripts,
  has been changed from LANG=C (ASCII) to LANG=C.UTF-8 (UTF-8 Unicode).
  .
  The default setting may be changed by modifying the file
  /etc/apache2/envvars, and restarting apache2 related process.
  .
  This modification may cause compatibility issues
  in programs or modules that are not designed to handle locale
  settings.
  .
  In some cases, it may be necessary to rebuild database indexes to
  ensure proper character encoding and sorting behavior, particularly
  when transitioning from ASCII-based collation to UTF-8,
  which may interpret and order characters differently.

 -- Bastien Roucariès <rouca@debian.org>  Fri, 01 Aug 2025 22:19:44 +0200

apache2 (2.4.65-2) unstable; urgency=medium

  Following the resolution of CVE-2025-23048,
  some SSL-enabled websites may begin encountering
  the error (AH02032):
  .
    Misdirected Request:
    The client needs a new connection for this request as the
    requested host name does not match the Server Name Indication
    (SNI) in use for this connection.
  .
  This behavior is particularly noticeable with AWS Application
  Load Balancers. Although they support intelligent SNI handling,
  they do not (as of this writing) relay SNI data to the target
  server, resulting in failed connections when hostnames don’t align.
  .
  Without an SNI provided by the client, there is nothing httpd
  can do to determine which vhost/configuration should be
  used to provide the correct certificate (and TLS authentication
  eventually) whenever multiple vhosts listen on the same IP:port.
  .
  That's because reading the HTTP Host header necessarily has to
  happen after the TLS handshake/auth/decryption (and later
  renegotiation is not an option with TLSv1.3).
  .
  So those connections fall back to the first vhost declared on
  the IP:port for the TLS handshake part, and if the request
  Host header finally matches a different vhost with a different
  TLS configuration it's rejected with AH02032.
  .
  Before 2.4.64 the check was not accurate and would allow that,
  with security implications.
  .
  As a workaround, you may (after a risk analysis) generate a
  wildcard certificate. If you’re managing multiple domains,
  consolidate them into a single certificate by including each
  wildcard domain as an alias. Then, update the Apache configuration
  to reference this unified certificate.
  .
  Another possible workaround is to configure each virtual host to
  listen on a separate port. This approach avoids SNI-related issues
  by ensuring that each vhost is uniquely addressed through its own
  connection endpoint, thereby allowing distinct TLS configurations
  without ambiguity.
  .
  This error may also stem from a misconfigured HAProxy setup.
  In such cases, enabling dynamic SNI handling on HAProxy might be
  necessary to ensure that the correct hostname is passed through
  during the TLS handshake. After risk analysis, it could be done
  by using "sni req.hdr(Host)" directive.
  .
  This error may also be caused by a misconfigured Nginx proxy setup.
  In such scenarios, enabling Server Name Indication (SNI) when connecting
  to the backend may be necessary to ensure that the correct hostname is
  transmitted during the TLS handshake. After conducting a risk analysis,
  this can be achieved by configuring the "proxy_ssl_server_name on;"
  and "proxy_ssl_name $host;" directives.

 -- Bastien Roucariès <rouca@debian.org>  Fri, 25 Jul 2025 20:33:38 +0200

apache2 (2.4.64-2) unstable; urgency=medium

  RFC 8996 published by the IETF in March 2021,
  mandates the formal deprecation of Transport
  Layer Security (TLS) versions 1.0 and 1.1 due
  to significant security vulnerabilities and limitations.
  These older protocols lack support for modern cryptographic
  algorithms and are prone to exploits that threaten data
  confidentiality and integrity. In alignment with RFC 8996,
  we disable by default these protocols.
  .
  This change can cause older applications or systems
  to break if they haven't been updated to support
  TLS 1.2 or 1.3.

 -- Bastien Roucariès <rouca@debian.org>  Thu, 17 Jul 2025 18:03:42 +0200

apache2 (2.4.10-2) unstable; urgency=low

  The default period for which rotated log files are kept has been
  reduced from one year to 14 days.

 -- Stefan Fritsch <sf@debian.org>  Tue, 23 Sep 2014 22:25:06 +0200

apache2 (2.4.1-1) unstable; urgency=low

  This package introduces a new major release of the Apache HTTP server. It is
  likely the site configuration needs changes to work with this release.
  Notable changes which need special care are:

  The module interface (ABI) has changed. If you have any locally compiled
  modules, you have to re-compile them for apache2 2.4.

  The authorization and authentication system has changed. Existing
  configurations using deprecated Order/Allow/Deny directives need to be
  upgraded to the new system. Please review upstream's "Authentication,
  Authorization and Access Control Howto" [1]. There is a new module
  "mod_access_compat", which is supposed to provide backward compatibility,
  but it does not work well in practice.

  Furthermore, MPMs are simple modules now. Thus, the MPM can be changed
  at any time by (un-)loading a specific module. Be careful when upgrading. An
  example of changing the MPM is given below:

  a2dismod mpm_worker
  a2enmod mpm_prefork

  MPM ITK users should be advised, that ITK is not a MPM anymore. Instead, it
  is a simple Apache module, expanding functionality of the prefork MPM. Thus,
  users should switch to the prefork MPM and enable ITK as a module. The
  upgrade scripts ensure this for the upgrade from Debian Wheezy.

  We did change the security model for Apache in our default configuration. We
  do not allow access to the file system outside /var/www and /usr/share.
  If you are running virtual hosts or scripts outside these directories, you
  need to whitelist them in your configuration to grant access through HTTP.
  Special care must be taken if you are using a sub-directory in /srv to serve
  your content as recommended by the File Hierarchy Standard (FHS). You must
  allow access to your served directory explicity in the corresponding virtual
  host, or by allowing access in apache2.conf as proposed.

  Along the security model, we did also change the default Document Root, files
  are served from. Previous releases served /var/www by default when no other
  virtual host matched the request. Starting with this release, we changed the
  default document root to /var/www/html, so that sensitive files from other
  virtual hosts wich are typically put into some directory below /var/www are
  not exposed by the default virtual host. This change further improves the out
  of box security.

  Moreover, the configuration mechanism in Debian has changed. All
  configurations in sites-enabled and conf-enabled need a ".conf" suffix now.
  The latter replaces the deprecated /etc/apache2/conf.d/ directory (which is
  not supported any more) and works just like {sites,mods}-{available,enabled}
  via the "a2enconf" tool. The upgrade tries to migrate known configuration
  files from /etc/apache2/conf.d/ to /etc/apache2/conf-available/ - please
  review these changes.

  Note this means all existing sites are ignored until they get a ".conf"
  suffix and are re-enabled by the use of a2ensite. The script in [3] can
  automate that for simple cases. This change also includes Debian default
  sites, so the default site has been renamed to 000-default to avoid naming
  confusions. The rename of the config files to *.conf makes the special
  handling inside apache2 to ignore *.dpkg-* backup files obsolete. This
  special handling has been removed.

  Users of mod_authn_dbm should switch to htdbm to manage their DBM user
  databases. The pure-perl management utility "dbmmanage" was removed as it was
  outdated and orphaned upstream.

  Packagers are advised to review whether their packages comply with this
  new version. Please see [2] for detailed documentation and instructions.

  [1] http://httpd.apache.org/docs/2.4/howto/auth.html
  [2] </usr/share/doc/apache2/PACKAGING>
  [3] </usr/share/doc/apache2/migrate-sites.pl>

 -- Arno Töll <arno@debian.org>  Fri, 23 July 2012 23:50:13 +0200

apache2 (2.2.15-4) unstable; urgency=low

  * Note to people using mod_proxy as forward proxy, i.e. with
    'ProxyRequests on':
    This release disables the configuration in mods-available/proxy.conf
    by default. You should verify that access control for proxy access
    still works as intended. This is especially important if you have
    your forward proxy configuration in a different configuration file
    than proxy.conf.

 -- Stefan Fritsch <sf@debian.org>  Mon, 19 Apr 2010 22:36:57 +0200

apache2 (2.2.15-1) unstable; urgency=low

  * To fix a security vulnerability in the design of the SSL/TLS protocol
    (CVE-2009-3555), the protocol had to be extended (RFC 5746). By default,
    session renegotiation is no longer supported with old clients that do not
    implement this extension. This breaks certain configurations with client
    certificate authentication. If you still need to support old clients, you
    may restore the old (insecure) behaviour by uncommenting the

        SSLInsecureRenegotiation on

    line in /etc/apache2/mods-available/ssl.conf

  * This release adds and enables mod_reqtimeout, which limits the time
    Apache waits for a client to send a complete request. This helps to
    mitigate against certain denial of service attacks. In case of problems
    with slow clients, the timeout values can be adjusted in
    /etc/apache2/mods-available/reqtimeout.conf , or the module can be
    disabled with "a2dismod reqtimeout".

 -- Stefan Fritsch <sf@debian.org>  Sat, 28 Aug 2010 20:49:30 +0100

apache2 (2.2.14-6) unstable; urgency=low

  * Apache now uses the environment variables APACHE_RUN_DIR, APACHE_LOCK_DIR,
    and APACHE_LOG_DIR in the default configuration.  If you have modified
    /etc/apache2/envvars, make sure that these variables are set and exported.
  * There is now some support for running multiple instances of Apache on the
    same machine. See the documentation in /usr/share/doc/apache2.2-common for
    details.

 -- Stefan Fritsch <sf@debian.org>  Sun, 07 Feb 2010 13:56:59 +0100

apache2 (2.2.13-2) unstable; urgency=high

  * The new support for TLS Server Name Indication added in 2.2.12 causes
    Apache to be stricter about certain misconfigurations involving name
    based SSL virtual hosts. This may result in Apache refusing to start
    with the logged error message:

        Server should be SSL-aware but has no certificate configured
        [Hint: SSLCertificateFile]

    Up to 2.2.11, Apache accepted configurations where the necessary SSL
    configuration statements were included in the first (default)
    <Virtualhost *:443> block but not in subsequent <Virtualhost *:443>
    blocks. Starting with 2.2.12, every VirtualHost block used with SSL must
    contain the SSLEngine, SSLCertificateFile, and SSLCertificateKeyFile
    directives (SSLCertificateKeyFile is optional in some cases).

    When you encounter the above problem, the output of the command

        egrep -ir '^[^#]*(sslcertificate|sslengine|virtualhost)' \
            /etc/apache2/*conf* /etc/apache2/*enabled

    may be useful to determine which VirtualHost sections need to be changed.

    Also, formerly accidentially working constructs like

        <VirtualHost *:80 *:443>

    where one virtual host definition is used for both a non-ssl and a ssl
    virtual host do not work anymore. You can achieve a similar effect with

        <VirtualHost *:80>
        Include /.../vhost.include
        </VirtualHost>
        <VirtualHost *:443>
        SSLEngine on
        SSLCertificateFile ...
        Include /.../vhost.include
        </VirtualHost>

 -- Stefan Fritsch <sf@debian.org>  Wed, 16 Sep 2009 20:14:59 +0200

apache2 (2.2.9-3) unstable; urgency=low

  * The directive "NameVirtualHost *" has been changed to "NameVirtualHost
    *:80". It has also been moved from sites-available/default to ports.conf.
    This allows to ship a proper SSL default virtual host config in
    sites-available/default-ssl, but it means that if you use several name
    based virtual hosts:
    
    - you will have to change <VirtualHost *> to <VirtualHost *:80> in your
      name based virtual hosts

    - you need to add more NameVirtualHost directives if you use other ports
      than 80 with name based virtual hosts. You may also have to add these
      ports to the default virtual host in /etc/apache2/sites-available/default
      (like this: "<VirtualHost *:80 *:81>").
    
    If you prefer to revert to the old setup instead (and don't need the
    default-ssl host), just change "NameVirtualHost *:80" back to
    "NameVirtualHost *" in ports.conf and "<VirtualHost *:80>" to
    "<VirtualHost *>" in sites-available/default.

  * For mod_disk_cache, caching is again disabled in disk_cache.conf by
    default. It usually makes more sense to enable this on a per-virtual host
    basis.

 -- Stefan Fritsch <sf@debian.org>  Mon, 30 Jun 2008 19:47:52 +0200

apache2 (2.2.8-5) unstable; urgency=low

  * The suexec helper program needed for mod_suexec is now shipped in a
    separate package, apache2-suexec, which is not installed by default.
    You need to install this package manually if you are using mod_suexec.

    There is now also the apache2-suexec-custom package, which contains a
    customizable version of suexec which can be used with different document
    roots than /var/www.

 -- Stefan Fritsch <sf@debian.org>  Sun, 04 May 2008 20:24:00 +0200

apache2 (2.2.8-1) unstable; urgency=low

  * The Apache User and Group and the PidFile path are now configured in
    /etc/apache2/envvars, to make it easier to use them in scripts
    (like the init and logrotate scripts, and apache2ctl).
    If you have changed these settings from their default values, you need to
    adjust /etc/apache2/envvars.
    This also means that starting apache2 with "apache2 -k start" is no longer
    possible, you have to use /etc/init.d/apache2 or apache2ctl.

 -- Stefan Fritsch <sf@debian.org>  Tue, 15 Jan 2008 21:41:23 +0100

apache2 (2.2.4-2) unstable; urgency=low

  * This version introduces some changes in the configuration layout and
    defaults. You will probably have to adjust your configuration accordingly.

    - Module specific configuration has been moved from 
      /etc/apache2/apache2.conf to /etc/apache2/mods-available/*.conf for the
      following modules: 
        actions          alias              autoindex
        info             mime               negotiation
        setenvif         status

    - AddDefaultCharset is again disabled by default. See
      /etc/apache2/conf.d/charset

    - "Listen 443" is automatically enabled in /etc/apache2/ports.conf if
      mod_ssl is enabled.

  * The NO_START functionality from /etc/default/apache2 has been removed. If
    you don't want to start apache2 on boot, rename the S*apache2 start
    symlinks as usual.

  * To ensure that the disk cache does not grow indefinitely, htcacheclean is
    now started when mod_disk_cache is enabled. The details can be configured
    in /etc/default/apache2 .

 -- Stefan Fritsch <sf@debian.org>  Mon, 09 Jul 2007 21:50:58 +0200
