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_ssl: Add the SSL_CLIENT_CERT_RFC4523_CEA variable, which provides
10 a combination of certificate serialNumber and issuer as defined by
11 CertificateExactMatch in RFC4523. [Graham Leggett]
13 *) suexec: Filter out the HTTP_PROXY environment variable because it is
14 treated as alias for http_proxy by some programs. [Stefan Fritsch]
16 *) mod_proxy_http: Use the "Connection: close" header for requests to
17 backends not recycling connections (disablereuse), including the default
18 reverse and forward proxies. [Yann Ylavic]
20 *) mod_proxy_http: Don't expect the backend to ack the "Connection: close" to
21 finally close those not meant to be kept alive by SetEnv proxy-nokeepalive
22 or force-proxy-request-1.0, and respond with 502 instead of 400 if its
23 Connection header is invalid. [Yann Ylavic]
25 *) mod_authn_dbd: Fix the error message logged in case of error while querying
26 the database. This is associated to AH01656 and AH01661. [Christophe Jaillet]
28 *) mod_proxy(es): Avoid error response/document handling by the core if some
29 input filter already did it while reading client's payload. [Yann Ylavic]
31 *) http: Make ap_die() robust against any HTTP error code and not modify
32 response status (finally logged) when nothing is to be done. [Yann Ylavic]
34 *) mod_proxy_connect/wstunnel: If both client and backend sides get readable
35 at the same time, don't lose errors occuring while forwarding on the first
36 side when none occurs next on the other side, and abort. [Yann Ylavic]
38 *) mod_lua: After a r:wsupgrade(), mod_lua was not properly
39 responding to a websockets PING but instead invoking the specified
40 script. PR57524. [Edward Lu <Chaosed0 gmail.com>]
42 *) mod_macro: Clear macros before initialization to avoid use-after-free
43 on startup or restart when the module is linked statically. PR 57525
44 [apache.org tech.futurequest.net, Yann Ylavic]
46 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
47 fetching the request body, so to minimize the delay between it is supposed
48 to be alive and the first bytes sent: this is a best effort to prevent the
49 backend from closing because of idle or keepalive timeout in the meantime.
50 Also, handle a new "proxy-flushall" environment variable which allows to
51 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
53 *) core: Define and UnDefine are no longer permitted in
54 directory context. Previously they would always be evaulated
55 as the configuration was read without regard for the directory
56 context. [Eric Covener]
58 *) config: For directives that do not expect any arguments, enforce
59 that none are specified in the configuration file.
60 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
62 *) mod_ssl: 'SSLProtocol ALL' was being ignored in virtual host context.
63 PR 57100. [Michael Kaufmann <apache-bugzilla michael-kaufmann.ch>,
66 *) mod_alias: Introduce expression parser support for Alias, ScriptAlias
67 and Redirect. [Graham Leggett]
69 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
70 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
72 *) mod_ssl: Add support for extracting subjectAltName entries of type
73 rfc822Name and dNSName into SSL_{CLIENT,SERVER}_SAN_{Email,DNS}_n
74 environment variables. Also addresses PR 57207. [Kaspar Brand]
76 *) mod_proxy: Don't put non balancer-member workers in error state by
77 default for connection or 500/503 errors, and honor status=+I for
78 any error. PR 48388. [Yann Ylavic]
80 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
81 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
83 *) split-logfile: Fix perl error: 'Can't use string ("example.org:80")
84 as a symbol ref while "strict refs"'. PR 56329.
85 [Holger Mauermann <mauermann gmail.com>]
87 *) mod_proxy_fcgi: Enable opt-in to TCP connection reuse by explicitly
88 setting proxy option disablereuse=off. [Eric Covener] PR 57378.
90 *) mod_http: Fix incorrect If-Match handling. PR 57358.
91 [Kunihiko Sakamoto <ksakamoto google.com>]
93 *) mod_ssl: Fix renegotiation failures redirected to an ErrorDocument.
94 PR 57334. [Yann Ylavic].
96 *) core: Fix -D[efined] or <Define>[d] variables lifetime accross restarts.
97 PR 57328. [Armin Abfalterer <a.abfalterer gmail.com>, Yann Ylavic].
99 *) mod_proxy_ajp: Fix client connection errors handling and logged status
100 when it occurs. PR 56823. [Yann Ylavic]
102 *) ap_expr: Add filemod function for checking file modification dates
105 *) core: Add CGIPassAuth directive to control whether HTTP authorization
106 headers are passed to scripts as CGI variables. PR 56855. [Jeff
109 *) mod_rewrite: Improve relative substitutions in per-directory/htaccess
110 context for directories found by mod_userdir and mod_alias. These no
111 longer require RewriteBase to be specified. [Eric Covener]
113 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
114 r1608202. [Eric Covener]
116 *) core: Support custom ErrorDocuments for HTTP 501 and 414 status codes.
117 PR 57167 [Edward Lu <Chaosed0 gmail.com>]
119 *) mod_proxy_connect: Don't issue AH02447 on sockets hangups, let the read
120 determine whether it is a normal close or a real error. PR 57168. [Yann
123 *) mod_buffer: Forward flushed input data immediatly and avoid (unlikely)
124 access to freed memory. [Yann Ylavic, Christophe Jaillet]
126 *) mod_proxy: Use the correct server name for SNI in case the backend
127 SSL connection itself is established via a proxy server.
128 PR 57139 [Szabolcs Gyurko <szabolcs gyurko.org>]
130 *) core: Ensure that httpd exits with an error status when the MPM fails
131 to run. [Yann Ylavic]
133 *) apreq: Content-Length header should be always interpreted as a decimal.
134 Leading 0 could be erroneously considered as an octal value. PR 56598.
135 [Chris Card <ctcard hotmail com>]
137 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
138 errors if name is truncated. PR53218. [Jim Jagielski]
140 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
141 for channel bindings. [Simo Sorce <simo redhat.com>]
143 *) mod_proxy_wstunnel: Concurrent websockets messages could be
144 lost or delayed with ProxyWebsocketAsync enabled.
145 [Edward Lu <Chaosed0 gmail.com>]
147 *) core, mod_info: Add compiled and loaded PCRE versions to version
148 number display. [Rainer Jung]
150 *) mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for
151 internationalization. [William Rowe]
153 *) mpm_winnt: Normalize the error and status messages emitted by service.c,
154 the service control interface for Windows. [William Rowe]
156 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
157 is run, instead of waiting until the end of the request. [Eric Covener]
159 *) mod_ldap: Be more conservative with the last-used time for
160 LDAPConnectionPoolTTL. PR54587 [Eric Covener]
162 *) mod_deflate: Don't fail when flushing inflated data to the user-agent
163 and that coincides with the end of stream ("Zlib error flushing inflate
164 buffer"). PR 56196. [Christoph Fausak <christoph fausak glueckkanja.com>]
166 *) mod_proxy: Don't limit the size of the connectable Unix Domain Socket
167 paths. [Christophe Jaillet, Yann Ylavic]
169 *) mod_ssl: dump SSL IO/state for the write side of the connection(s),
170 like reads (level TRACE4). [Yann Ylavic]
172 *) mod_proxy: Shutdown (eg. close notify) the backend connection before
173 closing. [Yann Ylavic]
175 *) mpm_event[opt]: Send the SSL close notify alert when the KeepAliveTimeout
176 expires. PR54998. [Yann Ylavic]
178 *) mod_ssl: Ensure that the SSL close notify alert is flushed to the client.
179 PR54998. [Tim Kosse <tim.kosse filezilla-project.org>, Yann Ylavic]
181 *) mod_log_config: Add GlobalLog to allow a globally defined log to
182 be inherited by virtual hosts that define a CustomLog.
183 [Edward Lu <Chaosed0 gmail.com>]
185 *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener
186 records for scalability. [Yingqi Lu <yingqi.lu@intel.com>,
187 Jeff Trawick, Jim Jagielski]
189 *) mod_proxy_html: support automatic detection of doctype and processing
190 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
192 *) mod_proxy_html: skip documents shorter than 4 bytes
193 PR 56286 [Micha Lenk <micha lenk info>]
195 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
196 when passed to 'connect()'.
197 [Graham Dumpleton <grahamd apache org>]
199 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
201 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
203 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
205 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
206 processing mode. [Eric Covener]
208 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
209 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
211 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
212 to be based on arbitrary expressions that do not include the username.
215 *) Add the ldap function to the expression API, allowing LDAP filters and
216 distinguished names based on expressions to be escaped correctly to
217 guard against LDAP injection. [Graham Leggett]
219 *) Add module mod_ssl_ct, which provides an implementation of Certificate
220 Transparency (RFC 6962) for httpd. [Jeff Trawick]
222 *) mod_proxy: Preserve original request headers even if they differ
223 from the ones to be forwarded to the backend. PR 45387.
226 *) mod_remoteip: Prevent an external proxy from presenting an internal
227 proxy. PR 55962. [Mike Rumph]
229 *) mod_ssl: Add hooks to allow other modules to perform processing at
230 several stages of initialization and connection handling. See
231 mod_ssl_openssl.h. [Jeff Trawick]
233 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
234 websockets connection as it is being close down. [Eric Covener]
236 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
237 of time a synchronous websockets connection stays idle with
238 ProxyWebsocketIdleTimeout. [Eric Covener]
240 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
241 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
244 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
245 event MPM (trunk-only). [Eric Covener]
247 *) mod_proxy_http: Add detach_backend hook (potentially usable
248 in other proxy scheme handlers). [Jeff Trawick]
250 *) mod_deflate: Add DeflateAlterETag to control how the ETag
251 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
252 PR 45023, PR 39727. [Eric Covener]
254 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
255 allow spaces in backreferences to be encoded as %20 instead of '+'.
258 *) mod_rewrite: Support an optional list of characters to escape in the
259 argument for the 'B' (escape backreferences) flag. [Eric Covener]
261 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
262 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
264 *) mod_rewrite: Rename the handler that does per-directory internal
265 redirects to "rewrite-redirect-handler" from "redirect-handler" so
266 it is less ambiguous and less likely to be reused. [Eric Covener]
268 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
269 default limit of 10000 iterations, and allowing each rule to change its
270 limit. [Eric Covener]
272 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
275 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
276 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
278 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
279 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
282 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
283 to support write completion. [Graham Leggett]
285 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
286 to allow providers to check the ErrorLog argument. [Jan Kaluza]
288 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
289 allow override with new CGIDRequestTimeout directive. PR43494
290 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
292 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
295 *) mod_lua: Let the Inter-VM get/set functions work with a global
296 shared memory pool instead of a per-process pool. [Daniel Gruno]
298 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
299 PR 54626. [Jean-Frederic Clere]
301 *) mod_proxy: Add ap_connection_reusable() for checking if a connection
302 is reusable as of this point in processing. [Jeff Trawick]
304 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
305 to avoid performance problems when subgroups aren't in use. [Eric Covener]
307 *) mod_syslog: New module implementing syslog ap_error_log provider.
308 Previously, this code was part of core, now it's in separate module.
311 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
312 syslog support from core to new mod_syslog. [Jan Kaluza]
314 *) mod_status, mod_echo: Fix the display of client addresses.
315 They were truncated to 31 characters which is not enough for IPv6 addresses.
316 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
318 *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers.
321 *) mod_unique_id: Use output of the PRNG rather than IP address and
322 pid, avoiding sleep() call and possible DNS issues at startup,
323 plus improving randomness for IPv6-only hosts.
324 [Jan Kaluza <jkaluza redhat.com>]
326 *) mod_authnz_ldap: Support primitive LDAP servers that do not accept
327 filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special
328 filter "none" to be specified in AuthLDAPURL. [Eric Covener]
330 *) mod_file_cache: mod_file_cache should be able to serve files that
331 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
333 *) core: merge AllowEncodedSlashes from the base configuration into
334 virtual hosts. [Eric Covener]
336 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
339 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
342 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
343 been configured with -D Z_PREFIX, which redefines the token "deflate".
346 *) mod_auth_digest: Use the secret when generating nonces in all cases and
347 not only when AuthName is used in .htaccess files (this change may cause
348 problems if used with round robin load balancers). Don't regenerate the
349 secret on graceful restarts. PR 54637 [Stefan Fritsch]
351 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
352 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
353 Reduce memory usage by 48 bytes per request. [Graham Leggett]
355 *) core: Stop the HTTP_IN filter from attempting to write error buckets
356 to the output filters, which is bogus in the proxy case. Create a
357 clean mapping from APR codes to HTTP status codes, and use it where
358 needed. [Graham Leggett]
360 *) mod_proxy: Ensure network errors detected by the proxy are returned as
361 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
362 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
364 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
365 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
366 <alejandro.alvarez.ayllon cern.ch>]
368 *) mod_ldap: LDAP connections used for authentication were not respecting
369 LDAPConnectionPoolTimeout. PR 54587
371 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
373 *) mod_proxy_html: process parsed comments immediately.
374 Fixes bug where parsed comments may be lost. [Nick Kew]
376 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
378 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
379 HTML/XHTML [Nick Kew]
381 *) core: Add option to add valgrind support. Use it to reduce false positive
382 warnings in mod_ssl. [Stefan Fritsch]
384 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
385 Cache the result of the most recent password hash verification for every
386 keep-alive connection. This saves some expensive calculations.
389 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
390 MSIE 3. [Stefan Fritsch]
392 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
393 conformance or to only log the found problems. [Stefan Fritsch]
395 *) core: Correctly parse an IPv6 literal host specification in an absolute
396 URL in the request line. [Stefan Fritsch]
400 *) core: Add LogLevelOverride directive that allows to override the
401 loglevel for clients from certain IPs. This also works for things
402 like the SSL handshake where <If> LogLevel ... </If> is evaluated
403 too late. [Stefan Fritsch]
405 *) core: Add new directive Warning to issue warnings from a configuration
406 file. Both Warning and Error now generate a timestamped log message.
409 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
410 variables. [Stefan Fritsch]
412 *) core: New directive RegisterHttpMethod for registering non-standard
413 HTTP methods. [Stefan Fritsch]
415 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
416 support. [Stefan Fritsch]
418 *) mod_allowhandlers: New module to forbid specific handlers for specific
419 directories. [Stefan Fritsch]
421 *) mod_systemd: New module, for integration with systemd on Linux.
422 [Jan Kaluza <jkaluza redhat.com>]
424 *) WinNT MPM: Store pid and generation for each thread in scoreboard
425 to allow tracking of threads from exiting children via mod_status
426 or other such mechanisms. [Jeff Trawick]
428 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
429 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
430 - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
432 - mod_cache: thundering herd lock directory
433 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
434 - mod_ldap: shared memory cache
435 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
438 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
439 setuid/setgid capability bits rather than a setuid root binary.
442 *) suexec: Add support for logging to syslog as an alternative to logging
443 to a file; configure --without-suexec-logfile --with-suexec-syslog.
446 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
447 [Matthew Steele <mdsteele google.com>]
449 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
450 be compiled by the build compiler instead of the host compiler.
451 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
452 PR 51257. [Guenter Knauf]
454 *) core: In maintainer mode, replace apr_palloc with a version that
455 initializes the allocated memory with non-zero values, except if
456 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
458 *) mod_policy: Add a new testing module to help server administrators
459 enforce a configurable level of protocol compliance on their
460 servers and application servers behind theirs. [Graham Leggett]
462 *) mod_firehose: Add a new debugging module able to record traffic
463 passing through the server in such a way that connections and/or
464 requests be reconstructed and replayed. [Graham Leggett]
474 [Apache 2.5.0-dev includes those bug fixes and changes with the
475 Apache 2.4.xx tree as documented below, except as noted.]
477 Changes with Apache 2.4.x and later:
479 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
481 Changes with Apache 2.2.x and later:
483 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
485 Changes with Apache 2.0.x and later:
487 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup