2 Changes with Apache 2.3.0
3 [ When backported to 2.2.x, remove entry from this file ]
5 *) SECURITY: CVE-2008-2364 (cve.mitre.org)
6 mod_proxy_http: Better handling of excessive interim responses
7 from origin server to prevent potential denial of service and high
8 memory usage. Reported by Ryujiro Shibuya. [Ruediger Pluem,
9 Joe Orton, Jim Jagielski]
11 *) mod_proxy_http: Do not forward requests with 'Expect: 100-continue' to
12 known HTTP/1.0 servers. Return 'Expectation failed' (417) instead.
15 *) core, authn/z: Determine registered authn/z providers directly in
16 ap_setup_auth_internal(), which allows optional functions that just
17 wrapped ap_list_provider_names() to be removed from authn/z modules.
20 *) authn/z: Convert common provider version strings to macros.
23 *) ab: Make ab.c compile on VC6. PR 45024 [Ruediger Pluem]
25 *) configure: Don't reject libtool 2.x
26 PR 44817 [Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA gmail.com>]
28 *) core: When testing for slash-terminated configuration paths in
29 ap_location_walk(), don't look past the start of an empty string
30 such as that created by a <Location ""> directive.
33 *) core, mod_proxy: If a kept_body is present, it becomes safe for
34 subrequests to support message bodies. Make sure that safety
35 checks within the core and within the proxy are not triggered
36 when kept_body is present. This makes it possible to embed
37 proxied POST requests within mod_include. [Graham Leggett]
39 *) mod_auth_form: Make sure the input filter stack is properly set
40 up before reading the login form. Make sure the kept body filter
41 is correctly inserted to ensure the body can be read a second
42 time safely should the authn be successful. [Graham Leggett,
45 *) mod_request: Insert the KEPT_BODY filter via the insert_filter
46 hook instead of during fixups. Add a safety check to ensure the
47 filters cannot be inserted more than once. [Graham Leggett,
50 *) core: Do not allow Options ALL if not all options are allowed to be
51 overwritten. PR 44262 [Michał Grzędzicki <lazy iq.pl>]
53 *) ap_cache_cacheable_headers_out() will (now) always
54 merge an error heaeders _before_ clearing them and _before_
55 merging in the actual entity headers and doing normal
56 hop-by-hop cleansing. [Dirk-Willem van Gulik].
58 *) cache: retire ap_cache_cacheable_hdrs_out() which was used
59 for both in- and out-put headers; and replace it by a single
60 ap_cache_cacheable_headers() wrapped in a in- and out-put
61 specific ap_cache_cacheable_headers_in()/out(). The latter
62 which will also merge error and ensure content-type. To keep
63 cache modules consistent with ease. This API change bumps
64 up the minor MM by one [Dirk-Willem van Gulik].
66 *) mod_rewrite: Allow Cookie option to set secure and HttpOnly flags.
67 PR 44799 [Christian Wenz <christian wenz.org>]
69 *) Move the KeptBodySize directive, kept_body filters and the
70 ap_parse_request_body function out of the http module and into a
71 new module called mod_request, reducing the size of the core.
74 *) mod_dbd: Handle integer configuration directive parameters with a
77 *) Change the directives within the mod_session* modules to be valid
78 both inside and outside the location/directory sections, as
79 suggested by wrowe. [Graham Leggett]
81 *) mod_auth_form: Add a module capable of allowing end users to log
82 in using an HTML form, storing the credentials within mod_session.
85 *) Add a function to the http filters that is able to parse an HTML
86 form request with the type of application/x-www-form-urlencoded.
89 *) mod_session_crypto: Initialise SSL in the post config hook.
90 [Ruediger Pluem, Graham Leggett]
92 *) mod_session_dbd: Add a session implementation capable of storing
93 session information in a SQL database via the dbd interface. Useful
94 for sites where session privacy is important. [Graham Leggett]
96 *) mod_session_crypto: Add a session encoding implementation capable
97 of encrypting and decrypting sessions wherever they may be stored.
98 Introduces a level of privacy when sessions are stored on the
99 browser. [Graham Leggett]
101 *) mod_session_cookie: Add a session implementation capable of storing
102 session information within cookies on the browser. Useful for high
103 volume sites where server bound sessions are too resource intensive.
106 *) mod_session: Add a generic session interface to unify the different
107 attempts at saving persistent sessions across requests.
110 *) core, authn/z: Avoid calling access control hooks for internal requests
111 with configurations which match those of initial request. Revert to
112 original behaviour (call access control hooks for internal requests
113 with URIs different from initial request) if any access control hooks or
114 providers are not registered as permitting this optimization.
115 Introduce wrappers for access control hook and provider registration
116 which can accept additional mode and flag data. [Chris Darroch]
118 *) Introduced ap_expr API for expression evaluation.
119 This is adapted from mod_include, which is the first module
123 *) mod_authz_dbd: When redirecting after successful login/logout per
124 AuthzDBDRedirectQuery, do not report authorization failure, and use
125 first row returned by database query instead of last row.
128 *) mod_ldap: Correctly return all requested attribute values
129 when some attributes have a null value.
130 PR 44560 [Anders Kaseorg <anders kaseorg.com>]
132 *) core: check symlink ownership if both FollowSymlinks and
133 SymlinksIfOwnerMatch are set [Nick Kew]
135 *) core: fix origin checking in SymlinksIfOwnerMatch
136 PR 36783 [Robert L Mathews <rob-apache.org.bugs tigertech.net>]
138 *) Activate mod_cache, mod_file_cache and mod_disc_cache as part of the
139 'most' set for '--enable-modules' and '--enable-shared-mods'. Include
140 mod_mem_cache in 'all' as well. [Dirk-Willem van Gulik]
142 *) Also install mod_so.h, mod_rewrite.h and mod_cache.h; as these
143 contain public function declarations which are useful for
144 third party module authors. PR 42431 [Dirk-Willem van Gulik].
146 *) mod_dir, mod_negotiation: pass the output filter information
147 to newly created sub requests; as these are later on used
148 as true requests with an internal redirect. This allows for
149 mod_cache et.al. to trap the results of the redirect.
150 [Dirk-Willem van Gulik, Ruediger Pluem]
152 *) mod_ldap: Add support (taking advantage of the new APR capability)
153 for ldap rebind callback while chasing referrals. This allows direct
154 searches on LDAP servers (in particular MS Active Directory 2003+)
155 using referrals without the use of the global catalog.
156 PRs 26538, 40268, and 42557 [Paul J. Reder]
158 *) Support chroot on Unix-family platforms
159 PR 43596 [Dimitar Pashev <mitko banksoft-bg.com>]
161 *) mod_ssl: Added server name indication support (SNI, RFC 4366).
162 PR 34607. [Kaspar Brand <asfbugz velox.ch>]. A test configuration
163 can be created with test/make_sni.sh [Dirk-Willem van Gulik].
165 *) ApacheMonitor.exe: Introduce --kill argument for use by the
166 installer. This will permit the installation tool to remove
167 all running instances before attempting to remove the .exe.
170 *) mod_ssl: Add support for OCSP validation of client certificates.
171 PR 41123. [Marc Stern <marc.stern approach.be>, Joe Orton]
173 *) mod_serf: New module for Reverse Proxying. [Paul Querna]
175 *) core: Add the option to keep aside a request body up to a certain
176 size that would otherwise be discarded, to be consumed by filters
177 such as mod_include. When enabled for a directory, POST requests
178 to shtml files can be passed through to embedded scripts as POST
179 requests, rather being downgraded to GET requests. [Graham Leggett]
181 *) mod_ssl: Fix TLS upgrade (RFC 2817) support. PR 41231. [Joe Orton]
183 *) scoreboard: Correctly declare ap_time_process_request.
184 PR 43789 [Tom Donovan <Tom.Donovan acm.org>]
186 *) core; scoreboard: ap_get_scoreboard_worker(sbh) now takes the sbh member
187 from the connection rec, ap_get_scoreboard_worker(proc, thread) will now
188 provide the unusual legacy lookup. [William Rowe]
190 *) mpm winnt: fix null pointer dereference
191 PR 42572 [Davi Arnaut]
193 *) mod_authnz_ldap, mod_authn_dbd: Tidy up the code to expose authn
194 parameters to the environment. Improve portability to
195 EBCDIC machines by using apr_toupper(). [Martin Kraemer]
197 *) mod_ldap, mod_authnzldap: Add support for nested groups (i.e. the ability
198 to authorize an authenticated user via a "require ldap-group X" directive
199 where the user is not in group X, but is in a subgroup contained in X.
200 PR 42891 [Paul J. Reder]
202 *) mod_ssl: Add support for caching SSL Sessions in memcached. [Paul Querna]
204 *) mod_ldap: Fix the search limit parameter to ldap_search_ext_s()
205 for SDKs that define LDAP_NO_LIMIT to something other than -1.
206 [David Jones <oscaremma gmail.com>]
208 *) apxs: Enhance -q flag to print all known variables and their values
209 when invoked without variable name(s).
210 [William Rowe, Sander Temme]
212 *) apxs: Eliminate run-time check for mod_so. PR 40653.
213 [David M. Lee <dmlee crossroads.com>]
215 *) beos MPM: Create pmain pool and run modules' child_init hooks when
216 entering ap_mpm_run(), then destroy pmain when exiting ap_mpm_run().
219 *) netware MPM: Destroy pmain pool when exiting ap_mpm_run() so that
220 cleanups registered in modules' child_init hooks are performed.
223 *) mod_dbd: Stash DBD connections in request_config of initial request
224 only, or else sub-requests and internal redirections may cause
225 entire DBD pool to be stashed in a single HTTP request. [Chris Darroch]
227 *) Fix issue which could cause error messages to be written to access logs
228 on Win32. PR 40476. [Tom Donovan <Tom.Donovan acm.org>]
230 *) The LockFile directive, which specifies the location of
231 the accept() mutex lockfile, is deprecated. Instead, the
232 AcceptMutex directive now takes an optional lockfile
233 location parameter, ala SSLMutex. [Jim Jagielski]
235 *) mod_authn_dbd: Export any additional columns queried in the SQL select
236 into the environment with the name AUTHENTICATE_<COLUMN>. This brings
237 mod_authn_dbd behaviour in line with mod_authnz_ldap. [Graham Leggett]
239 *) mod_dbd: Key the storage of prepared statements on the hex string
240 value of server_rec, rather than the server name, as the server name
241 may change (eg when the server name is set) at any time, causing
242 weird behaviour in modules dependent on mod_dbd. [Graham Leggett]
244 *) mod_proxy_fcgi: Added win32 build. [Mladen Turk]
246 *) sendfile_nonblocking() takes the _brigade_ as an argument, gets
247 the first bucket from the brigade, finds it not to be a FILE
248 bucket and barfs. The fix is to pass a bucket rather than a brigade.
249 [Niklas Edmundsson <nikke acc.umu.se>]
251 *) mod_rewrite: support rewritemap by SQL query [Nick Kew]
253 *) ap_get_server_version() has been removed. Third-party modules must
254 now use ap_get_server_banner() or ap_get_server_description().
257 *) All MPMs: Introduce a check_config phase between pre_config and
258 open_logs, to allow modules to review interdependent configuration
259 directive values and adjust them while messages can still be logged
260 to the console. Handle relevant MPM directives during this phase
261 and format messages for both the console and the error log, as
262 appropriate. [Chris Darroch]
264 *) mod_proxy: don't URLencode tilde in path component
265 [Stijn Hoop <stijn sandcat.nl>]
267 *) mpm_winnt: Fix return values from wait_for_many_objects.
268 The return value is index to the signaled thread in the
269 creted_threads array. We can not use WAIT_TIMEOUT because
270 his value is defined as 258, thus limiting the MaxThreads
271 to that value. [Mladen Turk]
273 *) core: Do not allow internal redirects like the DirectoryIndex of mod_dir
274 to circumvent the symbolic link checks imposed by FollowSymLinks and
275 SymLinksIfOwnerMatch. [Nick Kew, Ruediger Pluem, William Rowe]
277 *) New SSLLogLevelDebugDump [ None (default) | IO (not bytes) | Bytes ]
278 configures the I/O Dump of SSL traffic, when LogLevel is set to Debug.
279 The default is none as this is far greater debugging resolution than
280 the typical administrator is prepared to untangle. [William Rowe]
282 *) mod_disk_cache: If possible, check if the size of an object to cache is
283 within the configured boundaries before actually saving data.
284 [Niklas Edmundsson <nikke acc.umu.se>]
286 *) mod_cache: Convert all values to seconds before comparing them when
287 checking whether to send a Warning header for a stale response.
288 PR 39713. [Owen Taylor <otaylor redhat.com>]
290 *) mod_disk_cache: Delete temporary files if they cannot be renamed to their
291 final name. [Davi Arnaut <davi haxent.com.br>]
293 *) Worker and event MPMs: Remove improper scoreboard updates which were
294 performed in the event of a fork() failure. [Chris Darroch]
296 *) Add support for fcgi:// proxies to mod_rewrite.
297 [Markus Schiegl <ms schiegl.com>]
299 *) Remove incorrect comments from scoreboard.h regarding conditional
300 loading of worker_score structure with mod_status, and remove unused
301 definitions relating to old life_status field.
302 [Chris Darroch <chrisd pearsoncmg.com>]
304 *) Remove allocation of memory for unused array of lb_score pointers
305 in ap_init_scoreboard(). [Chris Darroch <chrisd pearsoncmg.com>]
307 *) Add mod_proxy_fcgi, a FastCGI back end for mod_proxy.
308 [Garrett Rooney, Jim Jagielski, Paul Querna]
310 *) Event MPM: Fill in the scoreboard's tid field. PR 38736.
311 [Chris Darroch <chrisd pearsoncmg.com>]
313 *) mod_charset_lite: Remove Content-Length when output filter can
314 invalidate it. Warn when input filter can invalidate it.
317 *) Authz: Add the new module mod_authn_core that will provide common
318 authn directives such as 'AuthType', 'AuthName'. Move the directives
319 'AuthType' and 'AuthName' out of the core module and merge mod_authz_alias
320 into mod_authn_core. [Brad Nicholes]
322 *) Authz: Move the directives 'Order', 'Allow', 'Deny' and 'Satisfy'
323 into the new module mod_access_compat which can be loaded to provide
324 support for these directives.
327 *) Authz: Move the 'Require' directive from the core module as well as
328 add the directives '<SatisfyAll>', '<SatisfyOne>', '<RequireAlias>'
329 and 'Reject' to mod_authz_core. The new directives introduce 'AND/OR'
330 logic into the authorization processing. [Brad Nicholes]
332 *) Authz: Add the new module mod_authz_core which acts as the
333 authorization provider vector and contains common authz
334 directives. [Brad Nicholes]
336 *) Authz: Renamed mod_authz_dbm authz providers from 'group' and
337 'file-group' to 'dbm-group' and 'dbm-file-group'. [Brad Nicholes]
339 *) Authz: Added the new authz providers 'env', 'ip', 'host', 'all' to handle
340 host-based access control provided by mod_authz_host and invoked
341 through the 'Require' directive. [Brad Nicholes]
343 *) Authz: Convert all of the authz modules from hook based to
344 provider based. [Brad Nicholes]
346 *) mod_cache: Add CacheMinExpire directive to set the minimum time in
347 seconds to cache a document.
348 [Brian Akins <brian.akins turner.com>, Ruediger Pluem]
350 *) mod_authz_dbd: SQL authz with Login/Session support [Nick Kew]
352 *) Fix typo in ProxyStatus syntax error message.
353 [Christophe Jaillet <christophe.jaillet wanadoo.fr>]
355 *) Asynchronous write completion for the Event MPM. [Brian Pane]
357 *) Added an End-Of-Request bucket type. The logging of a request and
358 the freeing of its pool are now done when the EOR bucket is destroyed.
359 This has the effect of delaying the logging until right after the last
360 of the response is sent; ap_core_output_filter() calls the access logger
361 indirectly when it destroys the EOR bucket. [Brian Pane]
363 *) Rewrite of logresolve support utility: IPv6 addresses are now supported
364 and the format of statistical output has changed. [Colm MacCarthaigh]
366 *) Rewrite of ap_coreoutput_filter to do nonblocking writes [Brian Pane]
368 *) Added new connection states for handler and write completion
371 *) mod_cgid: Refuse to work on Solaris 10 due to OS bugs. PR 34264.
374 *) Teach mod_ssl to use arbitrary OIDs in an SSLRequire directive,
375 allowing string-valued client certificate attributes to be used for
376 access control, as in: SSLRequire "value" in OID("1.3.6.1.4.1.18060.1")
377 [Martin Kraemer, David Reid]
379 [Apache 2.1.0-dev includes those bug fixes and changes with the
380 Apache 2.2.xx tree as documented, and except as noted, below.]
382 Changes with Apache 2.2.x and later:
384 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
386 Changes with Apache 2.0.x and later:
388 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup
390 Changes with Apache 1.3.x and later:
392 *) http://svn.apache.org/viewvc/httpd/httpd/branches/1.3.x/src/CHANGES?view=markup