source: mod_gnutls/CHANGELOG

mod_gnutls/0.12.0
Last change on this file was b6ce8ad, checked in by Fiona Klute <fiona.klute@…>, 2 months ago

Release version 0.12.0

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1** Version 0.12.0 (2021-08-14)
2
3- Three fixes that make mod_gnutls compatible with the Let's Encrypt
4  OCSP responder for OCSP stapling:
5
6  1. Support OCSP responses that are signed directly with the private
7     key of the CA and do not embed a signer certificate.
8
9  2. If the path part of OCSP URI provided in the certificate is
10     empty, use "/".
11
12  3. Use SHA1 for issuer name hash and issuer key hash in OCSP
13     requests. Support for that is required by RFC 5019 and referenced
14     in CAB Forum Baseline Requirements, too. This particular hash
15     doesn't need to be cryptographically secure.
16
17- Remove insecure algorithms that are still included in the GnuTLS
18  priority set "NORMAL" from the default priorities: plain RSA key
19  exchange, TLS 1.0, TLS 1.1
20
21- Fix virtual host references when retrieving OCSP responses for
22  stapling.
23
24- Share server instances for tests where reasonably possible with the
25  same server configuration. Starting/stopping server instances is the
26  slowest part of the tests, so this is a nice performance
27  improvement. The Automake test harness now reports fewer tests, but
28  some include a lot more client connections and requests to keep
29  coverage at least as good as before.
30
31- Various improvements to tests and logging infrastructure.
32
33** Version 0.11.0 (2020-06-27)
34
35- Change default for GnuTLSOCSPCheckNonce to "off", and send OCSP
36  nonces only if it has been enabled. The reason for this change is
37  that in practice most public CAs do not support OCSP nonces, which
38  is permitted by both RFC 6960 and the CA/Browser Forum baseline
39  requirements (as of version 1.6.9). In this situation enforcing
40  correct nonces by default makes the automatic OCSP stapling support
41  mostly useless.
42
43- Add a test for correct nonce handling with "GnuTLSOCSPCheckNonce
44  on", thanks to Krista Karppinen for that and a rewrite of the OCSP
45  responder script in Python!
46
47- Support session resumption using session tickets for proxy
48  connections (TLS 1.3 connections only). Requires a suitable
49  GnuTLSCache configuration.
50
51- Disable session tickets by default. The GnuTLS built-in key rotation
52  for session tickets never actually changes the primary key, just
53  derives keys from it, so it does not provide forward secrecy in case
54  an attacker learns the primary key (by gaining access to server
55  RAM). A reload of the server is enough to generate a new key, so
56  consider enabling session tickets and reloading the server every few
57  hours, at least until a forward-secret rotation can be implemented.
58
59- Fix a bug that mostly prevented searching ServerAliases when
60  selecting the virtual host from SNI.
61
62- Add ./configure option to disable building PDF documentation
63
64- Deprecate SRP and disable it by default.
65
66- Add support for building coverage reports using clang's source-based
67  code coverage.
68
69- Make ./configure check if both [::1] and 127.0.0.1 are available,
70  disable either if not. This makes the build work out-of-the-box in
71  Docker containers, which by default use IPv4 only.
72
73** Version 0.10.0 (2020-02-03)
74
75- Added support for stapling multiple OCSP responses (TLS 1.3
76  only). mod_gnutls will staple for as many consecutive certificates
77  in the certificate chain as possible.
78
79- Added support for TLS 1.3 post-handshake authentication, used if TLS
80  client authentication is required only for some resources on the
81  server. Rehandshake (for older TLS versions) is not supported, the
82  existing but broken code has been removed.
83
84- The test infrastructure has been mostly rewritten in Python, note
85  the new dependencies (Python 3, Pyyaml). Tests can run multiple TLS
86  connections and HTTP(S) requests as well as custom hooks now, see
87  test/README.md for details.
88
89- Server certificates are checked for the must-staple TLS feature
90  extension, stapling must be enabled if it is present.
91
92- Compatibility fix for GnuTLS 3.6.11 in the test suite: Handle
93  peer certificate type in TLS session information strings.
94
95- The test system will automatically detect if it needs to load
96  critical modules (e.g. mod_logio) that are built-in with the Debian
97  packages. This makes the tests work on Fedora without modifications,
98  and likely on similar distributions too.
99
100- Tests can optionally run with Valgrind for the primary HTTPD
101  instance by running ./configure with --enable-valgrind-test, see
102  test/README.md for details.
103
104- Known issue: When using MSVA client certificate validation the
105  Valgrind tests indicate memory leaks from libcurl, which is used by
106  libmsv to send requests to the MSVA. For details see the bug report:
107  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950359
108
109** Version 0.9.1 (2019-11-29)
110- Fix possible segfault (NULL pointer dereference) on failed TLS
111  handshake. Calling ssl_var_lookup() after a failed handshake could
112  lead to GnuTLS session information functions being called on a NULL
113  session pointer, leading to segfault.
114- Remove URLs from expected error responses in the test suite. Apache
115  HTTPD removed request URLs from canned error messages to prevent
116  misleading text/links being displayed via crafted links
117  (CVE-2019-10092). Adjust the expected error responses in our tests
118  so they can pass again.
119- Test suite: Ignore "Content-Length" header of responses. Thanks to
120  Krista Karppinen!
121- Add a section about module dependencies on socache to the handbook
122- Restructure the manpage build and move it to section 5 (config
123  files)
124- Test suite: Restructure certificate directories
125
126** Version 0.9.0 (2019-01-23)
127- Security fix: Refuse to send or receive any data over a failed TLS
128  connection (commit 72b669eae8c45dda1850e8e5b30a97c918357b51). The
129  previous behavior could lead to requests on reverse proxy TLS
130  connections being sent in plain text, and might have allowed faking
131  requests in plain text.
132- Security fix: Reject HTTP requests if they try to access virtual
133  hosts that do not match their TLS connections (commit
134  de3fad3c12f53cdbf082ad675e4b10f521a02811). Additionally check if SNI
135  and Host header match. Thanks to Krista Karppinen for contributing
136  tests!
137- OCSP stapling is now enabled by default, if possible. OCSP responses
138  are updated regularly and stored in a cache separate from the
139  session cache. The OCSP cache uses mod_socache_shmcb by default
140  (if the module is loaded, no other configuration required).
141- Session tickets are now enabled by default if using GnuTLS 3.6.4 or
142  newer. GnuTLS 3.6.4 introduced automatic rotation for the used key,
143  and TLS 1.3 takes care of other reasons not to use tickets while
144  requiring them for session resumption. Note that there is currently
145  no mechanism to synchronize ticket keys across a cluster of servers.
146- The internal cache implementation has been replaced with
147  mod_socache. Users may need to update their GnuTLSCache settings and
148  load the appropriate socache modules.
149- ALPN (required for HTTP/2) now works correctly with different
150  "Protocols" directives between virtual hosts if building with GnuTLS
151  3.6.3 or newer. Older versions require identical "Protocols"
152  directives for overlapping virtual hosts. Thanks to Vincent Tamet
153  for the bug report!
154- ALPN is now supported for proxy connections, making HTTP/2 proxy
155  connections using mod_proxy_http2 possible.
156- GnuTLSPriorities is optional now and defaults to "NORMAL" if
157  missing. The same applies to GnuTLSProxyPriorities (if TLS proxy is
158  enabled).
159- The manual is now built as a manual page, too, if pandoc is
160  available.
161- OpenPGP support has been removed.
162- Don't require pem2openpgp for tests when building without MSVA
163  support.
164
165** Version 0.8.4 (2018-04-13)
166- Support Apache HTTPD 2.4.33 API for proxy TLS connections
167- Support TLS for HTTP/2 connections with mod_http2
168- Fix configuration of OCSP stapling callback
169
170** Version 0.8.3 (2017-10-20)
171- Use GnuTLS' default DH parameters by default
172- Handle long Server Name Indication data and gracefully ignore
173  unknown SNI types
174- Send SNI for proxy connections
175- Deprecate OpenPGP support like GnuTLS did (will be removed
176  completely in a future release)
177- Do not announce session ticket support for proxy connections
178- Minor documentation updates (SSL_CLIENT_I_DN, reference for SNI)
179- Test suite: Simplify handling of proxy backend servers and OCSP
180  responders
181- Test suite: stability/compatibility fixes
182
183** Version 0.8.2 (2017-01-08)
184- Test suite: Ensure CRLF line ends in HTTP headers
185- Test suite, gen_ocsp_index.c: Handle serial as fixed order byte array
186
187** Version 0.8.1 (2016-12-20)
188- Bugfix: Use APR_SIZE_T_FMT for portable apr_size_t formatting
189
190** Version 0.8.0 (2016-12-11)
191- New: Support for OCSP stapling
192- Bugfix: Access to DBM cache is locked using global mutex
193  "gnutls-cache"
194- Bugfix: GnuTLSSessionTickets is now disabled by default as described
195  in the handbook
196- Fixed memory leak while checking proxy backend certificate
197- Fixed memory leaks in post_config
198- Safely delete session ticket key (requires GnuTLS >= 3.4)
199- Improved error handling in post_config hook
200- Various handbook updates
201- Internal API documentation can be generated using Doxygen
202- Unused code has been removed (conditionals for GnuTLS 2.x and Apache
203  versions before 2.2, internal Lua bytecode structure last used in
204  2011).
205- Test suite: Fixed locking for access to the PGP keyring of the test
206  certificate authority
207- mod_gnutls can be built using Clang (unsupported)
208
209** Version 0.7.5 (2016-05-28)
210- Sunil Mohan Adapa reported retry loops during session shutdown in
211  cleanup_gnutls_session() due to gnutls_bye() incorrectly returning
212  GNUTLS_E_INTERRUPTED or GNUTLS_E_AGAIN. Setting the GnuTLS session
213  errno in mgs_transport_write() fixes the problem.
214- Import Daniel Kahn Gillmor's patches for GnuPG v2 support from the
215  Debian package.
216- Build system improvements that allow VPATH builds and get "make
217  distcheck" to work
218
219** Version 0.7.4 (2016-04-13)
220- Support SoftHSM 2 for PKCS #11 testing
221- Increase verbosity of test logs
222
223** Version 0.7.3 (2016-01-12)
224- Update test suite for compatibility with GnuTLS 3.4, which has
225  stricter key usage checks and priorities than 3.3.
226- Write non-HTML output to mod_status reports if AP_STATUS_SHORT is
227  set (mod_status sets it for requests with the "auto" parameter, e.g.
228  https://localhost/server-status?auto).
229- Register "ssl_is_https" function so the special mod_rewrite variable
230  %{HTTPS} works correctly with mod_gnutls. The new test case for this
231  requires Wget or curl. Fixes Debian bug #514005.
232- Test suite servers listen on IPv4 *and* IPv6 loopback addresses by
233  default (other addresses configurable), which should fix failures
234  due to localhost randomly resolving to either on some distributions.
235- Isolate tests using network namespaces, if possible. This avoids
236  port conflicts with other test cases (so they can run in parallel)
237  and host services.
238- Support for local Apache drop-in config files in the test suite
239  (e.g. to load additional modules needed on Fedora).
240- Try to use markdown to build HTML documentation if pandoc is not
241  available.
242- Disable use of flock if it is unavailable or does not support
243  timeouts (the latter caused the build to fail on Debian Hurd).
244- New test: Disable TLS 1.0 (regression test for Debian bug #754960).
245
246** Version 0.7.2 (2015-11-21)
247- Bugfix: Non-blocking reads in the input filter could lead to a busy
248  wait in the gnutls_io_input_read function, causing high load on
249  Keep-Alive connections waiting for data, until either more data
250  could be received or the connection was closed. The fix is to pass
251  EAGAIN/EINTR results up to the input filter so they can be handled
252  properly.
253- Close TLS session if the input filter receives EOF (mostly relevant
254  for proper termination of proxy connections).
255- Remove dependency on APR Memcache, which is replaced by the newer
256  version included in the APR Utility Library (libaprutil).
257- Remove dependency on bc. It was used for floating point arithmetic
258  in the test suite, the calculations have been changed to use
259  integers and pure bash code.
260
261** Version 0.7.1 (2015-10-18)
262- Improved handling of PKCS #11 modules: mod_gnutls now loads either
263  modules specified using GnuTLSP11Module, or the system defaults, but
264  not both. Thanks to Nikos Mavrogiannopoulos for the report and
265  initial patch!
266- Initialize variables to safe defaults during client certificate
267  verification. Certain error code paths did not set them, but they
268  should never be hit due to config validation. This adds another line
269  of defense.
270- Enable C99 support via autoconf
271- Test suite improvements. Most importantly, automake now handles
272  environment setup without any external make calls. Rules to build
273  the certificates are included from the old test makefile. Note that
274  the dependency on GNU make is not new (the test makefile always used
275  GNU make syntax), it just wasn't listed explicitly.
276
277** Version 0.7 (2015-07-12)
278- Security fix for TLS client authentication (CVE-2015-2091)
279- Bug fixes that enable support for reverse proxy operation
280- Various test suite improvements. Tests are configured through autoconf,
281  so the test suite now works for builds without Monkeysphere support.
282- Add support for TLS connections to back end servers when operating as a
283  reverse proxy (X.509 authentication only at the moment).
284- PKCS #11 support for server keys and certificates
285- Use strict compiler arguments by default (-Wall -Werror -Wextra)
286- Allow limiting the size of certificates exported as SSL_SERVER_CERT
287  and SSL_CLIENT_CERT through the GnuTLSExportCertificates directive
288
289** Version 0.6 (2014-02-17)
290- Generating DH Params instead of using static ones.
291- Now considering ServerAlias Directives.
292- Major Legacy Code Cleanup.
293- html and pdf and manual documentation generated from markdown sources
294- support monkeysphere validation agent (MSVA) client-certificate verification
295- wider test suite
296- GnuTLSExportCertificates off by default
297
298** Version 0.5.10 (2011-07-12)
299- Patched a bug responsible for excessive memory consumption by mod_gnutls.
300- Support for proxying from SSL to plain HTTP was added (ie. proxy termination).
301
302** Version 0.5.9 (2010-09-24)
303- GnuTLSCache none is now an allowed option.
304- Corrected behavior in Keep-Alive connections (do not
305  terminate the connection prematurely)
306- The GnuTLSCache variable now can be given the specific
307  option "gdbm" instead of "dbm". "dbm" will use the berkeley
308  db type of libapr while gdbm will force gdbm to be used.
309  sdbm is no longer being used due to serious limitations.
310
311** Version 0.5.8 (2010-08-18)
312- Session tickets are enabled by default.
313- Fixes some segmentation faults noticed in some
314  configurations.
315
316** Version 0.5.7 (2010-07-01)
317- Force usage of SDBM. For some reason the default in
318  my system had issues after reaching a limit of entries.
319  SDBM seems stable so force it.
320- Optimizations in session caching.
321- Added support for session tickets. This allows a
322  server to avoid using a session cache and still support
323  session resumption. This is at the cost of transporting
324  session data during handshake. New option
325  GnuTLSSessionTickets [on|off]
326- Depend on gnutls 2.10.0 to force support for safe
327  renegotiation.
328
329** Version 0.5.6 (2010-03-24)
330- Corrected issue with firefox and long POST data (by
331  handling EINTR and EAGAIN errors in read).
332- Added support for chained client certificates
333- Corrected more issues related to double frees
334http://issues.outoforder.cc/view.php?id=102
335
336** Version 0.5.5 (2009-06-13)
337- Removed limits on CA certificate loading. Reported by
338  Sander Marechal and Jack Bates.
339- Do not allow sending empty TLS packets even when instructed to.
340  This had the side effect of clients closing connection.
341
342** Version 0.5.4 (2009-01-04)
343- mod_gnutls.h: modified definition to extern to avoid compilation
344  errors in darwin.
345- Added patch to fix issue with mod_proxy. Investigation and patch by Alain
346  Knaff.
347- libgnutls detection uses pkg-config.
348
349** Version 0.5.3 (2008-10-16)
350- Corrected bug to allow having an OpenPGP-only web site.
351- Increased Max handshake tries due to interrupted system calls.
352
353** Version 0.5.2 (2008-06-29)
354- Depend on gnutls 2.4 which has openpgp support in main library.
355
356** Version 0.5.1 (2008-03-05)
357- Added --disable-srp configure option
358- Better check for memcache (patch by Guillaume Rousse)
359- Corrected possible memory leak in DBM support for resuming sessions.
360
361** Version 0.5.0-alpha (2008-01-24)
362- Added support for OpenPGP keys. The new directives are:
363  GnuTLSPGPKeyringFile, GnuTLSPGPCertificateFile, GnuTLSPGPKeyFile
364
365** Version 0.4.2 (2007-12-10)
366- Added support for sending a certificate chain.
367- Corrected bug which did not allow the TLS session cache to be used.
368- Do not allow resuming sessions on different servers.
369
370** Version 0.4.1 (2007-12-03)
371- Added support for subject alternative names in certificates.
372Only one per certificate is supported.
373- New enviroment variables: SSL_CLIENT_M_VERSION, SSL_CLIENT_S_SAN%,
374SSL_CLIENT_S_TYPE, SSL_SERVER_M_VERSION, SSL_SERVER_S_SAN%, SSL_SERVER_S_TYPE
375- The compatibility mode can now be enabled explicitely with the
376%COMPAT keyword at the GnuTLSPriorities string. It is no longer the default.
377- Check for GnuTLSPriorities directive. This corrects a segfault. Thanks
378to David Hrbáč.
379- Better handling of GnuTLSDHFile and GnuTLSRSAFile.
380- No longer default paths for RSA and DH parameter files.
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