2 Changes with Apache 2.5.0
4 *) SECURITY: CVE-2015-0228 (cve.mitre.org)
5 mod_lua: A maliciously crafted websockets PING after a script
6 calls r:wsupgrade() can cause a child process crash.
7 [Edward Lu <Chaosed0 gmail.com>]
9 *) mod_deflate: A misplaced check prevents limiting small bodies with the
10 new inflate limits. PR56872. [Edward Lu, Eric Covener, Yann Ylavic]
12 *) ab: Add missing longest request (100%) to CSV export.
13 [Marcin Fabrykowski <bugzilla fabrykowski.pl>]
15 *) core: Add expression support to ErrorDocument. Switch from a fixed
16 sized 664 byte array per merge to a hash table. [Graham Leggett]
18 *) mod_ssl: Add the SSL_CLIENT_CERT_RFC4523_CEA variable, which provides
19 a combination of certificate serialNumber and issuer as defined by
20 CertificateExactMatch in RFC4523. [Graham Leggett]
22 *) suexec: Filter out the HTTP_PROXY environment variable because it is
23 treated as alias for http_proxy by some programs. [Stefan Fritsch]
25 *) mod_proxy_http: Use the "Connection: close" header for requests to
26 backends not recycling connections (disablereuse), including the default
27 reverse and forward proxies. [Yann Ylavic]
29 *) mod_proxy_http: Don't expect the backend to ack the "Connection: close" to
30 finally close those not meant to be kept alive by SetEnv proxy-nokeepalive
31 or force-proxy-request-1.0, and respond with 502 instead of 400 if its
32 Connection header is invalid. [Yann Ylavic]
34 *) mod_proxy(es): Avoid error response/document handling by the core if some
35 input filter already did it while reading client's payload. [Yann Ylavic]
37 *) http: Make ap_die() robust against any HTTP error code and not modify
38 response status (finally logged) when nothing is to be done. [Yann Ylavic]
40 *) mod_proxy_connect/wstunnel: If both client and backend sides get readable
41 at the same time, don't lose errors occuring while forwarding on the first
42 side when none occurs next on the other side, and abort. [Yann Ylavic]
44 *) mod_lua: After a r:wsupgrade(), mod_lua was not properly
45 responding to a websockets PING but instead invoking the specified
46 script. PR57524. [Edward Lu <Chaosed0 gmail.com>]
48 *) mod_macro: Clear macros before initialization to avoid use-after-free
49 on startup or restart when the module is linked statically. PR 57525
50 [apache.org tech.futurequest.net, Yann Ylavic]
52 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
53 fetching the request body, so to minimize the delay between it is supposed
54 to be alive and the first bytes sent: this is a best effort to prevent the
55 backend from closing because of idle or keepalive timeout in the meantime.
56 Also, handle a new "proxy-flushall" environment variable which allows to
57 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
59 *) core: Define and UnDefine are no longer permitted in
60 directory context. Previously they would always be evaulated
61 as the configuration was read without regard for the directory
62 context. [Eric Covener]
64 *) config: For directives that do not expect any arguments, enforce
65 that none are specified in the configuration file.
66 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
68 *) mod_ssl: 'SSLProtocol ALL' was being ignored in virtual host context.
69 PR 57100. [Michael Kaufmann <apache-bugzilla michael-kaufmann.ch>,
72 *) mod_alias: Introduce expression parser support for Alias, ScriptAlias
73 and Redirect. [Graham Leggett]
75 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
76 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
78 *) mod_ssl: Add support for extracting subjectAltName entries of type
79 rfc822Name and dNSName into SSL_{CLIENT,SERVER}_SAN_{Email,DNS}_n
80 environment variables. Also addresses PR 57207. [Kaspar Brand]
82 *) mod_proxy: Don't put non balancer-member workers in error state by
83 default for connection or 500/503 errors, and honor status=+I for
84 any error. PR 48388. [Yann Ylavic]
86 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
87 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
89 *) split-logfile: Fix perl error: 'Can't use string ("example.org:80")
90 as a symbol ref while "strict refs"'. PR 56329.
91 [Holger Mauermann <mauermann gmail.com>]
93 *) mod_proxy_fcgi: Enable opt-in to TCP connection reuse by explicitly
94 setting proxy option disablereuse=off. [Eric Covener] PR 57378.
96 *) mod_http: Fix incorrect If-Match handling. PR 57358.
97 [Kunihiko Sakamoto <ksakamoto google.com>]
99 *) mod_ssl: Fix renegotiation failures redirected to an ErrorDocument.
100 PR 57334. [Yann Ylavic].
102 *) core: Fix -D[efined] or <Define>[d] variables lifetime accross restarts.
103 PR 57328. [Armin Abfalterer <a.abfalterer gmail.com>, Yann Ylavic].
105 *) mod_proxy_ajp: Fix client connection errors handling and logged status
106 when it occurs. PR 56823. [Yann Ylavic]
108 *) ap_expr: Add filemod function for checking file modification dates
111 *) core: Add CGIPassAuth directive to control whether HTTP authorization
112 headers are passed to scripts as CGI variables. PR 56855. [Jeff
115 *) mod_rewrite: Improve relative substitutions in per-directory/htaccess
116 context for directories found by mod_userdir and mod_alias. These no
117 longer require RewriteBase to be specified. [Eric Covener]
119 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
120 r1608202. [Eric Covener]
122 *) core: Support custom ErrorDocuments for HTTP 501 and 414 status codes.
123 PR 57167 [Edward Lu <Chaosed0 gmail.com>]
125 *) mod_proxy_connect: Don't issue AH02447 on sockets hangups, let the read
126 determine whether it is a normal close or a real error. PR 57168. [Yann
129 *) mod_buffer: Forward flushed input data immediatly and avoid (unlikely)
130 access to freed memory. [Yann Ylavic, Christophe Jaillet]
132 *) mod_proxy: Use the correct server name for SNI in case the backend
133 SSL connection itself is established via a proxy server.
134 PR 57139 [Szabolcs Gyurko <szabolcs gyurko.org>]
136 *) core: Ensure that httpd exits with an error status when the MPM fails
137 to run. [Yann Ylavic]
139 *) apreq: Content-Length header should be always interpreted as a decimal.
140 Leading 0 could be erroneously considered as an octal value. PR 56598.
141 [Chris Card <ctcard hotmail com>]
143 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
144 errors if name is truncated. PR53218. [Jim Jagielski]
146 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
147 for channel bindings. [Simo Sorce <simo redhat.com>]
149 *) mod_proxy_wstunnel: Concurrent websockets messages could be
150 lost or delayed with ProxyWebsocketAsync enabled.
151 [Edward Lu <Chaosed0 gmail.com>]
153 *) core, mod_info: Add compiled and loaded PCRE versions to version
154 number display. [Rainer Jung]
156 *) mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for
157 internationalization. [William Rowe]
159 *) mpm_winnt: Normalize the error and status messages emitted by service.c,
160 the service control interface for Windows. [William Rowe]
162 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
163 is run, instead of waiting until the end of the request. [Eric Covener]
165 *) mod_ldap: Be more conservative with the last-used time for
166 LDAPConnectionPoolTTL. PR54587 [Eric Covener]
168 *) mod_deflate: Don't fail when flushing inflated data to the user-agent
169 and that coincides with the end of stream ("Zlib error flushing inflate
170 buffer"). PR 56196. [Christoph Fausak <christoph fausak glueckkanja.com>]
172 *) mod_proxy: Don't limit the size of the connectable Unix Domain Socket
173 paths. [Christophe Jaillet, Yann Ylavic]
175 *) mod_ssl: dump SSL IO/state for the write side of the connection(s),
176 like reads (level TRACE4). [Yann Ylavic]
178 *) mod_proxy: Shutdown (eg. close notify) the backend connection before
179 closing. [Yann Ylavic]
181 *) mpm_event[opt]: Send the SSL close notify alert when the KeepAliveTimeout
182 expires. PR54998. [Yann Ylavic]
184 *) mod_ssl: Ensure that the SSL close notify alert is flushed to the client.
185 PR54998. [Tim Kosse <tim.kosse filezilla-project.org>, Yann Ylavic]
187 *) mod_log_config: Add GlobalLog to allow a globally defined log to
188 be inherited by virtual hosts that define a CustomLog.
189 [Edward Lu <Chaosed0 gmail.com>]
191 *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener
192 records for scalability. [Yingqi Lu <yingqi.lu@intel.com>,
193 Jeff Trawick, Jim Jagielski]
195 *) mod_proxy_html: support automatic detection of doctype and processing
196 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
198 *) mod_proxy_html: skip documents shorter than 4 bytes
199 PR 56286 [Micha Lenk <micha lenk info>]
201 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
202 when passed to 'connect()'.
203 [Graham Dumpleton <grahamd apache org>]
205 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
207 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
209 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
211 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
212 processing mode. [Eric Covener]
214 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
215 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
217 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
218 to be based on arbitrary expressions that do not include the username.
221 *) Add the ldap function to the expression API, allowing LDAP filters and
222 distinguished names based on expressions to be escaped correctly to
223 guard against LDAP injection. [Graham Leggett]
225 *) Add module mod_ssl_ct, which provides an implementation of Certificate
226 Transparency (RFC 6962) for httpd. [Jeff Trawick]
228 *) mod_proxy: Preserve original request headers even if they differ
229 from the ones to be forwarded to the backend. PR 45387.
232 *) mod_remoteip: Prevent an external proxy from presenting an internal
233 proxy. PR 55962. [Mike Rumph]
235 *) mod_ssl: Add hooks to allow other modules to perform processing at
236 several stages of initialization and connection handling. See
237 mod_ssl_openssl.h. [Jeff Trawick]
239 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
240 websockets connection as it is being close down. [Eric Covener]
242 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
243 of time a synchronous websockets connection stays idle with
244 ProxyWebsocketIdleTimeout. [Eric Covener]
246 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
247 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
250 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
251 event MPM (trunk-only). [Eric Covener]
253 *) mod_proxy_http: Add detach_backend hook (potentially usable
254 in other proxy scheme handlers). [Jeff Trawick]
256 *) mod_deflate: Add DeflateAlterETag to control how the ETag
257 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
258 PR 45023, PR 39727. [Eric Covener]
260 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
261 allow spaces in backreferences to be encoded as %20 instead of '+'.
264 *) mod_rewrite: Support an optional list of characters to escape in the
265 argument for the 'B' (escape backreferences) flag. [Eric Covener]
267 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
268 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
270 *) mod_rewrite: Rename the handler that does per-directory internal
271 redirects to "rewrite-redirect-handler" from "redirect-handler" so
272 it is less ambiguous and less likely to be reused. [Eric Covener]
274 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
275 default limit of 10000 iterations, and allowing each rule to change its
276 limit. [Eric Covener]
278 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
281 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
282 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
284 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
285 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
288 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
289 to support write completion. [Graham Leggett]
291 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
292 to allow providers to check the ErrorLog argument. [Jan Kaluza]
294 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
295 allow override with new CGIDRequestTimeout directive. PR43494
296 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
298 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
301 *) mod_lua: Let the Inter-VM get/set functions work with a global
302 shared memory pool instead of a per-process pool. [Daniel Gruno]
304 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
305 PR 54626. [Jean-Frederic Clere]
307 *) mod_proxy: Add ap_connection_reusable() for checking if a connection
308 is reusable as of this point in processing. [Jeff Trawick]
310 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
311 to avoid performance problems when subgroups aren't in use. [Eric Covener]
313 *) mod_syslog: New module implementing syslog ap_error_log provider.
314 Previously, this code was part of core, now it's in separate module.
317 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
318 syslog support from core to new mod_syslog. [Jan Kaluza]
320 *) mod_status, mod_echo: Fix the display of client addresses.
321 They were truncated to 31 characters which is not enough for IPv6 addresses.
322 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
324 *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers.
327 *) mod_unique_id: Use output of the PRNG rather than IP address and
328 pid, avoiding sleep() call and possible DNS issues at startup,
329 plus improving randomness for IPv6-only hosts.
330 [Jan Kaluza <jkaluza redhat.com>]
332 *) mod_authnz_ldap: Support primitive LDAP servers that do not accept
333 filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special
334 filter "none" to be specified in AuthLDAPURL. [Eric Covener]
336 *) mod_file_cache: mod_file_cache should be able to serve files that
337 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
339 *) core: merge AllowEncodedSlashes from the base configuration into
340 virtual hosts. [Eric Covener]
342 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
345 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
348 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
349 been configured with -D Z_PREFIX, which redefines the token "deflate".
352 *) mod_auth_digest: Use the secret when generating nonces in all cases and
353 not only when AuthName is used in .htaccess files (this change may cause
354 problems if used with round robin load balancers). Don't regenerate the
355 secret on graceful restarts. PR 54637 [Stefan Fritsch]
357 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
358 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
359 Reduce memory usage by 48 bytes per request. [Graham Leggett]
361 *) core: Stop the HTTP_IN filter from attempting to write error buckets
362 to the output filters, which is bogus in the proxy case. Create a
363 clean mapping from APR codes to HTTP status codes, and use it where
364 needed. [Graham Leggett]
366 *) mod_proxy: Ensure network errors detected by the proxy are returned as
367 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
368 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
370 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
371 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
372 <alejandro.alvarez.ayllon cern.ch>]
374 *) mod_ldap: LDAP connections used for authentication were not respecting
375 LDAPConnectionPoolTimeout. PR 54587
377 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
379 *) mod_proxy_html: process parsed comments immediately.
380 Fixes bug where parsed comments may be lost. [Nick Kew]
382 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
384 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
385 HTML/XHTML [Nick Kew]
387 *) core: Add option to add valgrind support. Use it to reduce false positive
388 warnings in mod_ssl. [Stefan Fritsch]
390 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
391 Cache the result of the most recent password hash verification for every
392 keep-alive connection. This saves some expensive calculations.
395 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
396 MSIE 3. [Stefan Fritsch]
398 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
399 conformance or to only log the found problems. [Stefan Fritsch]
401 *) core: Correctly parse an IPv6 literal host specification in an absolute
402 URL in the request line. [Stefan Fritsch]
406 *) core: Add LogLevelOverride directive that allows to override the
407 loglevel for clients from certain IPs. This also works for things
408 like the SSL handshake where <If> LogLevel ... </If> is evaluated
409 too late. [Stefan Fritsch]
411 *) core: Add new directive Warning to issue warnings from a configuration
412 file. Both Warning and Error now generate a timestamped log message.
415 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
416 variables. [Stefan Fritsch]
418 *) core: New directive RegisterHttpMethod for registering non-standard
419 HTTP methods. [Stefan Fritsch]
421 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
422 support. [Stefan Fritsch]
424 *) mod_allowhandlers: New module to forbid specific handlers for specific
425 directories. [Stefan Fritsch]
427 *) mod_systemd: New module, for integration with systemd on Linux.
428 [Jan Kaluza <jkaluza redhat.com>]
430 *) WinNT MPM: Store pid and generation for each thread in scoreboard
431 to allow tracking of threads from exiting children via mod_status
432 or other such mechanisms. [Jeff Trawick]
434 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
435 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
436 - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
438 - mod_cache: thundering herd lock directory
439 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
440 - mod_ldap: shared memory cache
441 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
444 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
445 setuid/setgid capability bits rather than a setuid root binary.
448 *) suexec: Add support for logging to syslog as an alternative to logging
449 to a file; configure --without-suexec-logfile --with-suexec-syslog.
452 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
453 [Matthew Steele <mdsteele google.com>]
455 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
456 be compiled by the build compiler instead of the host compiler.
457 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
458 PR 51257. [Guenter Knauf]
460 *) core: In maintainer mode, replace apr_palloc with a version that
461 initializes the allocated memory with non-zero values, except if
462 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
464 *) mod_policy: Add a new testing module to help server administrators
465 enforce a configurable level of protocol compliance on their
466 servers and application servers behind theirs. [Graham Leggett]
468 *) mod_firehose: Add a new debugging module able to record traffic
469 passing through the server in such a way that connections and/or
470 requests be reconstructed and replayed. [Graham Leggett]
480 [Apache 2.5.0-dev includes those bug fixes and changes with the
481 Apache 2.4.xx tree as documented below, except as noted.]
483 Changes with Apache 2.4.x and later:
485 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
487 Changes with Apache 2.2.x and later:
489 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
491 Changes with Apache 2.0.x and later:
493 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup