* New features
- "redirect" also supports "exec" and not only "connect".
- PKCS#11 engine DLL updated to version 0.4.7.
* Bugfixes
- Fixed premature cron thread initialization causing hangs.
- Fixed "verifyPeer = yes" on OpenSSL <= 1.0.1.
- Fixed pthreads support on OpenSolaris.
Changelog:
Version 5.39, 2017.01.01, urgency: LOW
* New features
- PKCS#11 engine (pkcs11.dll) added to the Win32 build.
- Per-destination TLS session cache added for the client mode.
- The new "logId" parameter "process" added to log PID values.
- Added support for the new SSL_set_options() values.
- Updated the manual page.
- Obsolete references to "SSL" replaced with "TLS".
* Bugfixes
- Fixed "logId" parameter to also work in inetd mode.
- "delay = yes" properly enforces "failover = prio".
- Fixed fd_set allocation size on Win64.
- Fixed reloading invalid configuration file on Win32.
- Fixed resolving addresses with unconfigured network interfaces.
Version 5.38, 2016.11.26, urgency: MEDIUM
* New features
- "sni=" can be used to prevent sending the SNI extension.
- The AI_ADDRCONFIG resolver flag is used when available.
- Merged Debian 06-lfs.patch (thx Peter Pentchev).
* Bugfixes
- Fixed a memory allocation bug causing crashes with OpenSSL 1.1.0.
- Fixed error handling for mixed IPv4/IPv6 destinations.
- Merged Debian 08-typos.patch (thx Peter Pentchev).
Version 5.37, 2016.11.06, urgency: MEDIUM
* Bugfixes
- OpenSSL DLLs updated to version 1.0.2j (stops crashes).
- The default SNI target (not handled by any slave service)
is handled by the master service rather than rejected.
- Removed thread synchronization in the FORK threading model.
Version 5.36, 2016.09.22, urgency: HIGH
* Security bugfixes
- OpenSSL DLLs updated to version 1.0.2i.
https://www.openssl.org/news/secadv_20160922.txt
* New features
- Added support for OpenSSL 1.1.0 built with "no-deprecated".
- Removed direct zlib dependency.
Update stunnel to 5.35.
- Add patch to provide an explicit chroot option to the default
configuration sample (option is documented but not found within
the default conf file). While here, enable setuid/setgid as
stunnel user/group creations are handled by package.
- Rework SUBSTs so that they apply to the correct sample
config file.
Changelog:
Version 5.35, 2016.07.18, urgency: HIGH
* Bugfixes
- Fixed incorrectly enforced client certificate requests.
- Only default to SO_EXCLUSIVEADDRUSE on Vista and later.
- Fixed thread safety of the configuration file reopening.
Version 5.34, 2016.07.05, urgency: HIGH
* Security bugfixes
- Fixed malfunctioning "verify = 4".
* New features
- Bind sockets with SO_EXCLUSIVEADDRUSE on WIN32.
- Added three new service-level options: requireCert, verifyChain,
and verifyPeer for fine-grained certificate verification control.
- Improved compatibility with the current OpenSSL 1.1.0-dev tree.
Version 5.33, 2016.06.23, urgency: HIGH
* New features
- Improved memory leak detection performance and accuracy.
- Improved compatibility with the current OpenSSL 1.1.0-dev tree.
- SNI support also enabled on OpenSSL 0.9.8f and later (thx to
Guillermo Rodriguez Garcia).
- Added support for PKCS #12 (.p12/.pfx) certificates (thx to
Dmitry Bakshaev).
* Bugfixes
- Fixed a TLS session caching memory leak (thx to Richard Kraemer).
Before stunnel 5.27 this leak only emerged with sessiond enabled.
- Yet another WinCE socket fix (thx to Richard Kraemer).
- Fixed passphrase/pin dialogs in tstunnel.exe.
- Fixed a FORK threading build regression bug.
- OPENSSL_NO_DH compilation fix (thx to Brian Lin).
Version 5.32, 2016.05.03, urgency: HIGH
* Security bugfixes
- OpenSSL DLLs updated to version 1.0.2h.
https://www.openssl.org/news/secadv_20160503.txt
* New features
- New "socket = a:IPV6_V6ONLY=yes" option to only bind IPv6.
- Memory leak detection.
- Improved compatibility with the current OpenSSL 1.1.0-dev tree.
- Added/fixed Red Hat scripts (thx to Andrew Colin Kissa).
* Bugfixes
- Workaround for a WinCE sockets quirk (thx to Richard Kraemer).
- Fixed data alignment on 64-bit MSVC (thx to Yuris W. Auzins).
Changelog:
Version 5.29, 2016.01.08, urgency: LOW
* New features
- New WIN32 icons.
- Performance improvement: rwlocks used for locking with pthreads.
* Bugfixes
- Compilation fix for *BSD.
- Fixed configuration file reload for relative stunnel.conf path
on Unix.
- Fixed ignoring CRLfile unless CAfile was also specified (thx
to Strukov Petr).
Changelog:
Version 5.28, 2015.12.11, urgency: HIGH
* New features
- Build matrix (.travis.yml) extended with ./configure options.
- mingw.mak updated to build tstunnel.exe (thx to Jose Alf.).
* Bugfixes
- Fixed incomplete initialization.
- Fixed UCONTEXT threading on OSX.
- Fixed exit codes for information requests (as
in "stunnel -version" or "stunnel -help").
Version 5.27, 2015.12.03, urgency: MEDIUM
* Security bugfixes
- OpenSSL DLLs updated to version 1.0.2e.
https://www.openssl.org/news/secadv_20151203.txt
* New features
- Automated build testing configured with .travis.yml.
- Added reading server certificates from hardware engines.
For example: cert = id_45
- Only attempt to use potentially harmful compiler or linker
options if gcc was detected.
- /opt/csw added to the OpenSSL directory lookup list.
- mingw.mak updates (thx to Jose Alf.).
- TODO list updated.
Version 5.26, 2015.11.06, urgency: MEDIUM
* Bugfixes
- Compilation fixes for OSX, *BSD and Solaris.
Version 5.25, 2015.11.02, urgency: MEDIUM
* New features
- SMTP client protocol negotiation support for
"protocolUsername", "protocolPassword", and
"protocolAuthentication" (thx to Douglas Harris).
- New service-level option "config" to specify configuration
commands introduced in OpenSSL 1.0.2 (thx to Stephen Wall).
- The global option "foreground" now also accepts "quiet"
parameter, which does not enable logging to stderr.
- Manual page updated.
- Obsolete OpenSSL engines removed from the Windows build:
4758cca, aep, atalla, cswift, nuron, sureware.
- Improved compatibility with the current OpenSSL 1.1.0-dev tree:
gracefully handle symbols renamed from SSLeay* to OpenSSL*.
* Bugfixes
- Fixed the "s_poll_wait returned 1, but no descriptor
is ready" internal error.
- Fixed "exec" hangs due to incorrect thread-local
storage handling (thx to Philip Craig).
- Fixed PRNG initialization (thx to Philip Craig).
- Setting socket options no longer performed on PTYs.
- Fixed 64-bit Windows build.
Version 5.24, 2015.10.08, urgency: MEDIUM
* New features
- Custom CRL verification was replaced with the internal
OpenSSL functionality.
- *BSD support for "transparent = destination" and
client-side "protocol = socks". This feature should
work at least on FreeBSD, OpenBSD and OS X.
- Added a new "protocolDomain" option for the NTLM
authentication (thx to Andreas Botsikas).
- Improved compatibility of the NTLM phase 1 message (thx
to Andreas Botsikas).
- "setuid" and "setgid" options are now also available
in service sections. They can be used to set owner
and group of the Unix socket specified with "accept".
- Added support for the new OpenSSL 1.0.2 SSL options.
- Added OPENSSL_NO_EGD support (thx to Bernard Spil).
- VC autodetection added to makew32.bat (thx to Andreas
Botsikas).
* Bugfixes
- Fixed the RESOLVE [F0] TOR extension support in SOCKS5.
- Fixed the error code reported on the failed bind()
requests.
- Fixed the sequential log id with the FORK threading.
- Restored the missing Microsoft.VC90.CRT.manifest file.
Version 5.23, 2015.09.02, urgency: LOW
* New features
- Client-side support for the SOCKS protocol.
See https://www.stunnel.org/socksvpn.html for details.
- Reject SOCKS requests to connect loopback addresses.
- New service-level option "OCSPnonce".
The default value is "OCSPnonce = no".
- Win32 directory structure rearranged. The installer
script provides automatic migration for common setups.
- Added Win32 installer option to install stunnel for the
current user only. This feature does not deploy the NT
service, but it also does not require aministrative
privileges to install and configure stunnel.
- stunnel.cnf was renamed to openssl.cnf in order to
to prevent users from mixing it up with stunnel.conf.
- Win32 desktop is automatically refreshed when the icon
is created or removed.
- The ca-certs.pem file is now updated on stunnel upgrade.
- Inactive ports were removed from the PORTS file.
- Added IPv6 support to the transparent proxy code.
* Bugfixes
- Compilation fix for OpenSSL version older than 1.0.0.
- Compilation fix for mingw.
Version 5.22, 2015.07.30, urgency: HIGH
* New features
- "OCSPaia = yes" added to the configuration file templates.
- Improved double free detection.
* Bugfixes
- Fixed a number of OCSP bugs. The most severe of those
bugs caused stunnel to treat OCSP responses that failed
OCSP_basic_verify() checks as if they were successful.
- Fixed the passive IPv6 resolver (broken in stunnel 5.21).
Version 5.21, 2015.07.27, urgency: MEDIUM
* New features
- Signal names are displayed instead of numbers.
- First resolve IPv4 addresses on passive resolver requests.
This speeds up stunnel startup on Win32 with a slow/defunct
DNS service.
- The "make check" target was modified to only build Win32
executables when stunnel is built from a git repository (thx
to Peter Pentchev).
- More elaborate descriptions were added to the warning about
using "verify = 2" without "checkHost" or "checkIP".
- Performance optimization was performed on the debug code.
* Bugfixes
- Fixed the FORK and UCONTEXT threading support.
- Fixed "failover=prio" (broken since stunnel 5.15).
- Added a retry when sleep(3) was interrupted by a signal
in the cron thread scheduler.
Changelog:
Version 5.20, 2015.07.09, urgency: HIGH
* Security bugfixes
- OpenSSL DLLs updated to version 1.0.2d.
https://www.openssl.org/news/secadv_20150709.txt
* New features
- poll(2) re-enabled on MacOS X 10.5 and later.
- Xcode SDK is automatically used on MacOS X if no other
locally installed OpenSSL directory is found.
- The SSL library detection algorithm was made a bit smarter.
- Warnings about insecure authentication were modified to
include the name of the affected service section.
- A warning was added to stunnel.init if no pid file was
specified in the configuration file (thx to Peter Pentchev).
- Optional debugging symbols are included in the Win32 installer.
- Documentation updates (closes Debian bug #781669).
* Bugfixes
- Signal pipe reinitialization added to prevent turning the
main accepting thread into a busy wait loop when an external
condition breaks the signal pipe. This bug was found to
surface on Win32, but other platforms may also be affected.
- Fixed removing the disabled taskbar icon.
- Generated temporary DH parameters are used for configuration
reload instead of the static defaults.
- LSB compatibility fixes added to the stunnel.init script (thx
to Peter Pentchev).
- Fixed the manual page headers (thx to Gleydson Soares).
Version 5.19, 2015.06.16, urgency: MEDIUM:
* New features
- OpenSSL DLLs updated to version 1.0.2c.
- Added a runtime check whether COMP_zlib() method is implemented
in order to improve compatibility with the Debian OpenSSL build.
* Bugfixes
- Improved socket error handling.
- Cron thread priority on Win32 platform changed to
THREAD_PRIORITY_LOWEST to improve portability.
- Makefile bugfixes for stunnel 5.18 regressions.
- Fixed some typos in docs and scripts (thx to Peter Pentchev).
- Fixed a log level check condition (thx to Peter Pentchev).
Version 5.18, 2015.06.12, urgency: MEDIUM:
* New features
- OpenSSL DLLs updated to version 1.0.2b.
https://www.openssl.org/news/secadv_20150611.txt
- Added "include" configuration file option to include all
configuration file parts located in a specified directory.
- Log file is reopened every 24 hours. With "log = overwrite"
this feature can be used to prevent filling up disk space.
- Temporary DH parameters are refreshed every 24 hours, unless
static DH parameters were provided in the certificate file.
- Unique initial DH parameters are distributed with each release.
- Warnings are logged on potentially insecure authentication.
- Improved compatibility with the current OpenSSL 1.1.0-dev tree:
removed RLE compression support, etc.
- Updated stunnel.spec (thx to Bill Quayle).
* Bugfixes
- Fixed handling of dynamic connect targets.
- Fixed handling of trailing whitespaces in the Content-Length
header of the NTLM authentication.
- Fixed --sysconfdir and --localstatedir handling (thx to
Dagobert Michelsen).
Version 5.07, 2014.11.01, urgency: MEDIUM:
* New features
- Several SMTP server protocol negotiation improvements.
- Added UTF-8 byte order marks to stunnel.conf templates.
- DH parameters are no longer generated by "make cert".
The hardcoded DH parameters are sufficiently secure,
and modern TLS implementations will use ECDH anyway.
- Updated manual for the "options" configuration file option.
- Added support for systemd 209 or later.
- New --disable-systemd ./configure option.
- setuid/setgid commented out in stunnel.conf-sample.
* Bugfixes
- Added support for UTF-8 byte order mark in stunnel.conf.
- Compilation fix for OpenSSL with disabled SSLv2 or SSLv3.
- Non-blocking mode set on inetd and systemd descriptors.
- shfolder.h replaced with shlobj.h for compatibility
with modern Microsoft compilers.
Version 5.06, 2014.10.15, urgency: HIGH:
* Security bugfixes
- OpenSSL DLLs updated to version 1.0.1j.
https://www.openssl.org/news/secadv_20141015.txt
- The insecure SSLv2 protocol is now disabled by default.
It can be enabled with "options = -NO_SSLv2".
- The insecure SSLv3 protocol is now disabled by default.
It can be enabled with "options = -NO_SSLv3".
- Default sslVersion changed to "all" (also in FIPS mode)
to autonegotiate the highest supported TLS version.
* New features
- Added missing SSL options to match OpenSSL 1.0.1j.
- New "-options" commandline option to display the list
of supported SSL options.
* Bugfixes
- Fixed FORK threading build regression bug.
- Fixed missing periodic Win32 GUI log updates.
Version 5.05, 2014.10.10, urgency: MEDIUM:
* New features
- Asynchronous communication with the GUI thread for faster
logging on Win32.
- systemd socket activation (thx to Mark Theunissen).
- The parameter of "options" can now be prefixed with "-"
to clear an SSL option, for example:
"options = -LEGACY_SERVER_CONNECT".
- Improved "transparent = destination" manual page (thx to
Vadim Penzin).
* Bugfixes
- Fixed POLLIN|POLLHUP condition handling error resulting
in prematurely closed (truncated) connection.
- Fixed a null pointer dereference regression bug in the
"transparent = destination" functionality (thx to
Vadim Penzin). This bug was introduced in stunnel 5.00.
- Fixed startup thread synchronization with Win32 GUI.
- Fixed erroneously closed stdin/stdout/stderr if specified
as the -fd commandline option parameter.
- A number of minor Win32 GUI bugfixes and improvements.
- Merged most of the Windows CE patches (thx to Pierre Delaage).
- Fixed incorrect CreateService() error message on Win32.
- Implemented a workaround for defective Cygwin file
descriptor passing breaking the libwrap support:
http://wiki.osdev.org/Cygwin_Issues#Passing_file_descriptors
Version 5.04, 2014.09.21, urgency: LOW:
* New features
- Support for local mode ("exec" option) on Win32.
- Support for UTF-8 config file and log file.
- Win32 UTF-16 build (thx to Pierre Delaage for support).
- Support for Unicode file names on Win32.
- A more explicit service description provided for the
Windows SCM (thx to Pierre Delaage).
- TCP/IP dependency added for NT service in order to prevent
initialization failure at boot time.
- FIPS canister updated to version 2.0.8 in the Win32 binary
build.
* Bugfixes
- load_icon_default() modified to return copies of default icons
instead of the original resources to prevent the resources
from being destroyed.
- Partially merged Windows CE patches (thx to Pierre Delaage).
- Fixed typos in stunnel.init.in and vc.mak.
- Fixed incorrect memory allocation statistics update in
str_realloc().
- Missing REMOTE_PORT environmental variable is provided to
processes spawned with "exec" on Unix platforms.
- Taskbar icon is no longer disabled for NT service.
- Fixed taskbar icon initialization when commandline options are
specified.
- Reportedly more compatible values used for the dwDesiredAccess
parameter of the CreateFile() function (thx to Pierre Delaage).
- A number of minor Win32 GUI bugfixes and improvements.
Of utmost importance: it fixes CVE 2014-0016.
Thanks to jgw (Jeff W) _AT_ sdf.org for working on the same patch
independently.
In before the freeze! Changelog follows.
Security bugfixes
Added PRNG state update in fork threading (CVE-2014-0016).
New global configuration file defaults
Default "fips" option value is now "no", as FIPS mode is only helpful for compliance, and never for actual security.
Default "pid" is now "", i.e. not to create a pid file at startup.
New service-level configuration file defaults
Default "ciphers" updated to "HIGH:MEDIUM:+3DES:+DH:!aNULL:!SSLv2" due to AlFBPPS attack and bad performance of DH ciphersuites.
Default "libwrap" setting is now "no" to improve performance.
New features
OpenSSL DLLs updated to version 1.0.1f.
zlib DLL updated to version 1.2.8.
autoconf scripts upgraded to version 2.69.
TLS 1.1 and TLS 1.2 are now allowed in the FIPS mode.
New service-level option "redirect" to redirect SSL client connections on authentication failures instead of rejecting them.
New global "engineDefault" configuration file option to control which OpenSSL tasks are delegated to the current engine. Available tasks: ALL, RSA, DSA, ECDH, ECDSA, DH, RAND, CIPHERS, DIGESTS, PKEY, PKEY_CRYPTO, PKEY_ASN1.
New service-level configuration file option "engineId" to select the engine by identifier, e.g. "engineId = capi".
New global configuration file option "log" to control whether to append (the default), or to overwrite log file while (re)opening.
Different taskbar icon colors to indicate the service state.
New global configuration file options "iconIdle", "iconActive", and "iconError" to select status icon on GUI taskbar.
Removed the limit of 63 stunnel.conf sections on Win32 platform.
Installation of a sample certificate was moved to a separate "cert" target in order to allow unattended (e.g. scripted) installations.
Reduced length of the logged thread identifier. It is still based on the OS thread ID, and thus not unique over long periods of time.
Improved readability of error messages printed when stunnel refuses to start due to a critical error.
Bugfixes
LD_PRELOAD Solaris compatibility bug fixed (thx to Norm Jacobs).
CRYPTO_NUM_LOCKS replaced with CRYPTO_num_locks() to improve binary compatibility with diverse builds of OpenSSL (thx to Norm Jacobs).
Corrected round-robin failover behavior under heavy load.
Numerous fixes in the engine support code.
On Win32 platform .rnd file moved from c:\ to the stunnel folder.
Changelog:
Version 4.46, 2011.11.04, urgency: LOW:
* New features
- Added Unix socket support (e.g. "connect = /var/run/stunnel/socket").
- Added "verify = 4" mode to ignore CA chain and only verify peer certificate.
- Removed the limit of 16 IP addresses for a single 'connect' option.
- Removed the limit of 256 stunnel.conf sections in PTHREAD threading model.
It is still not possible have more than 63 sections on WIN32 platform.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms740141(v=vs.85).aspx
* Optimizations
- Reduced per-connection memory usage.
- Performed a major refactoring of internal data structures. Extensive
internal testing was performed, but some regression bugs are expected.
* Bugfixes
- Fixed WIN32 compilation with Mingw32.
- Fixed non-blocking API emulation layer in UCONTEXT threading model.
- Fixed signal handling in UCONTEXT threading model.
set in PKG_SYSCONFDIR variable, so it is passed down to Makefile.
Configuration final path ends up being etc/stunnel/stunnel/stunnel.conf,
which is wrong.
- New features
- New verify level 0 to request and ignore peer certificate. This
feature is useful with the new Windows GUI menu to save cached peer
certificate chains, as SSL client certificates are not sent by default.
- Manual page has been updated.
- Removed support for changing Windows Service name with "service" option.
- Hardcoded 2048-bit DH parameters are used as a fallback if DH parameters
are not provided in stunnel.pem.
- Default "ciphers" value updated to prefer ECDH:
"ALL:!SSLv2:!aNULL:!EXP:!LOW:-MEDIUM:RC4:+HIGH".
- Default ECDH curve updated to "prime256v1".
- Removed support for temporary RSA keys (used in obsolete export ciphers).
- Bugfixes
- The -quiet commandline option was applied to *all* message boxes.
- Silent install (/S option) no longer attempts to create stunnel.pem.
Version 4.39, 2011.07.06, urgency: LOW:
New features
New Win32 installer module to build self-signed stunnel.pem.
Added configuration file editing with Windows GUI.
Added log file reopening file editing with Windows GUI. It might be useful to also implement log file rotation.
Improved configuration file reload with Windows GUI.
Version 4.38, 2011.06.28, urgency: MEDIUM:
New features
Server-side SNI implemented (RFC 3546 section 3.1) with a new service-level option "nsi".
"socket" option also accepts "yes" and "no" for flags.
Nagle's algorithm is now disabled by default for improved interactivity.
Bugfixes
A compilation fix was added for OpenSSL version < 1.0.0.
Signal pipe set to non-blocking mode. This bug caused hangs of stunnel features based on signals, e.g. local mode, FORK threading, or configuration file reload on Unix. Win32 platform was not affected.
Version 4.37, 2011.06.17, urgency: MEDIUM:
New features
Client-side SNI implemented (RFC 3546 section 3.1).
Default "ciphers" changed from the OpenSSL default to a more secure and faster "RC4-MD5:HIGH:!aNULL:!SSLv2". A paranoid (and usually slower) setting would be "HIGH:!aNULL:!SSLv2".
Recommended "options = NO_SSLv2" added to the sample stunnel.conf file.
Default client method upgraded from SSLv3 to TLSv1. To connect servers without TLS support use "sslVersion = SSLv3" option.
Improved --enable-fips and --disable-fips ./configure option handling.
On startup stunnel now compares the compiled version of OpenSSL against the running version of OpenSSL. A warning is logged on mismatch.
Bugfixes
Non-blocking socket handling in local mode fixed (Debian bug #626856).
UCONTEXT threading mode fixed.
Removed the use of gcc Thread-Local Storage for improved portability.
va_copy macro defined for platforms that do not have it.
Fixed "local" option parsing on IPv4 systems.
Solaris compilation fix (redefinition of "STR").
Version 4.36, 2011.05.03, urgency: LOW:
New features
Updated Win32 DLLs for OpenSSL 1.0.0d.
Dynamic memory management for strings manipulation: no more static STRLEN limit, lower stack footprint.
Strict public key comparison added for "verify = 3" certificate checking mode (thx to Philipp Hartwig).
Backlog parameter of listen(2) changed from 5 to SOMAXCONN: improved behavior on heavy load.
Example tools/stunnel.service file added for systemd service manager.
Bugfixes
Missing pthread_attr_destroy() added to fix memory leak (thx to Paul Allex and Peter Pentchev).
Fixed the incorrect way of setting FD_CLOEXEC flag.
Fixed --enable-libwrap option of ./configure script.
/opt/local added to OpenSSL search path for MacPorts compatibility.
Workaround implemented for signal handling on MacOS X.
A trivial bug fixed in the stunnel.init script.
Retry implemented on EAI_AGAIN error returned by resolver calls.
Version 4.35, 2011.02.05, urgency: LOW:
New features
Updated Win32 DLLs for OpenSSL 1.0.0c.
Transparent source (non-local bind) added for FreeBSD 8.x.
Transparent destination ("transparent = destination") added for Linux.
Bugfixes
Fixed reload of FIPS-enabled stunnel.
Compiler options are now auto-detected by ./configure script in order to support obsolete versions of gcc.
Async-signal-unsafe s_log() removed from SIGTERM/SIGQUIT/SIGINT handler.
CLOEXEC file descriptor leaks fixed on Linux >= 2.6.28 with glibc >= 2.10. Irreparable race condition leaks remain on other Unix platforms. This issue may have security implications on some deployments: http://udrepper.livejournal.com/20407.html
Directory lib64 included in the OpenSSL library search path.
Windows CE compilation fixes (thx to Pierre Delaage).
Deprecated RSA_generate_key() replaced with RSA_generate_key_ex().
Domain name changes (courtesy of Bri Hatch)
http://stunnel.mirt.net/ --> http://www.stunnel.org/
ftp://stunnel.mirt.net/ --> http://ftp.stunnel.org/
stunnel.mirt.net::stunnel --> rsync.stunnel.org::stunnel
stunnel-users@mirt.net --> stunnel-users@stunnel.orgstunnel-announce@mirt.net --> stunnel-announce@stunnel.org
Version 4.34, 2010.09.19, urgency: LOW:
New features
Updated Win32 DLLs for OpenSSL 1.0.0a.
Updated Win32 DLLs for zlib 1.2.5.
Updated automake to version 1.11.1
Updated libtool to version 2.2.6b
Added ECC support with a new service-level "curve" option.
DH support is now enabled by default.
Added support for OpenSSL builds with some algorithms disabled.
./configure modified to support cross-compilation.
Sample stunnel.init updated based on Debian init script.
Bugfixes
Implemented fixes in user interface to enter engine PIN.
Fixed a transfer() loop issue on socket errors.
Fixed missing WIN32 taskbar icon while displaying a global option error.
- New features
- New service-level "libwrap" option for run-time control whether
/etc/hosts.allow and /etc/hosts.deny are used for access control.
Disabling libwrap significantly increases performance of stunnel.
- Log file reopen on USR1 signal was added.
- Graceful configuration reload with HUP signal on Unix
and with GUI on Windows.
- Bugfixes
- Inetd mode fixed
- Fixed a transfer() loop issue with SSLv2 connections.
- Fixed a "setsockopt IP_TRANSPARENT" warning with "local" option.
- Logging subsystem bugfixes and cleanup.
- Installer bugfixes for Vista and later versions of Windows.
- FIPS mode can be enabled/disabled at runtime.
* libwrap related fixes, better debugging messages, MS Visual C++ support
Changes 4.25:
* delay libwrap process spawning after dropping privs, other improvements
4.24: fix security problem (properly reject revoked certs)
4.23: WinNT bugfix
4.22:
- A new global option to control logging to syslog.
Simultaneous logging to a file and the syslog is now possible.
- A new service level option to control stack size.
- Restored chroot() to be executed after decoding numerical
userid and groupid values in drop_privileges().
- A few bugs fixed the in the new libwrap support code.
- TLSv1 method used by default in FIPS mode instead of
SSLv3 client and SSLv23 server methods.
4.21:
- Initial FIPS 140-2 support (see INSTALL.FIPS for details).
- Experimental fast support for non-MT-safe libwrap is provided
with pre-spawned processes.
- Stunnel binary moved from /usr/local/sbin to /usr/local/bin
in order to meet FHS and LSB requirements.
- Added code to disallow compiling stunnel with pthreads when
OpenSSL is compiled without threads support.
- Minor manual update.
- TODO file updated.
- Dynamic locking callbacks added (needed by some engines to work).
- AC_ARG_ENABLE fixed in configure.am to accept yes/no arguments.
- On some systems libwrap requires yp_get_default_domain from libnsl,
additional checking for libnsl was added to the ./configure script.
- Sending a list of trusted CAs for the client to choose the right
certificate restored.
- Some compatibility issues with NTLM authentication fixed.
Version 4.20, 2006.11.30, urgency: MEDIUM:
* Release notes
- The new transfer() function has been well tested.
I recommend upgrading any previous version with this one.
* Bugfixes
- Fixed support for encrypted passphases (broken in 4.19).
- Reduced amount of debug logs.
- A minor man page update.
Version 4.19, 2006.11.11, urgency: LOW/EXPERIMENTAL:
* Release notes
- There are a lot of new features in this version. I recommend
to test it well before upgrading your mission-critical systems.
* New features
- New service-level option to specify OCSP server flag:
OCSPflag = <flag>
- "protocolCredentials" option changed to "protocolUsername"
and "protocolPassword"
- NTLM support to be enabled with the new service-level option:
protocolAuthentication = NTLM
- imap protocol negotiation support added.
- Passphrase cache was added so the user does not need to reenter
the same passphrase for each defined service any more.
- New service-level option to retry connect+exec section:
retry = yes|no
- Local IP and port is logged for each established connection.
- Win32 DLLs for OpenSSL 0.9.8d.
* Bugfixes
- Serious problem with SSL_WANT_* retries fixed.
The new code requires extensive testing!
Version 4.18, 2006.09.26, urgency: MEDIUM:
* Bugfixes
- GPF on entering private key pass phrase on Win32 fixed.
- Updated OpenSSL Win32 DLLs.
- Minor configure script update.
Version 4.17, 2006.09.10, urgency: MEDIUM:
* New features
- Win32 DLLs for OpenSSL 0.9.8c.
* Bugfixes
- Problem with detecting getaddrinfo() in ./configure fixed.
- Compilation problem due to misplaced #endif in ssl.c fixed.
- Duplicate 220 in smtp_server() function in protocol.c fixed.
- Minor os2.mak update.
- Minor update of safestring()/safename() macros.
Version 4.16, 2006.08.31, urgency: MEDIUM:
* New features sponsored by Hewlett-Packard
- A new global option to control engine:
engineCtrl = <command>[:<parameter>]
- A new service-level option to select engine to read private key:
engineNum = <engine number>
- OCSP support:
ocsp = <URL>
* New features
- A new option to select version of SSL protocol:
sslVersion = all|SSLv2|SSLv3|TLSv1
- Visual Studio vc.mak by David Gillingham <dgillingham@gmail.com>.
- OS2 support by Paul Smedley (http://smedley.info)
* Bugfixes
- An ordinary user can install stunnel again.
- Compilation problem with --enable-dh fixed.
- Some minor compilation warnings fixed.
- Service-level CRL cert store implemented.
- GPF on protocol negotiations fixed.
- Problem detecting addrinfo() on Tru64 fixed.
- Default group is now detected by configure script.
- Check for maximum number of defined services added.
- OpenSSL_add_all_algorithms() added to SSL initialization.
- configure script sections reordered to detect pthread library funcions.
- RFC 2487 autdoetection improved. High resolution s_poll_wait()
not currently supported by UCONTEXT threading.
- More precise description of cert directory file names (thx to Muhammad
Muquit).
* Other changes
- Maximum number of services increased from 64 to 256 when poll() is used.
(PKG_SYSCONFDIR already includes "stunnel" by default, so avoid the
package adding another and making $PREFIX/etc/stunnel/stunnel/stunnel.conf;
the pidfile does not normally belong under $PREFIX as $PREFIX/var/run is
not normally cleaned/checked by OS-supplied processes.)
Version 4.07, 2005.01.03, urgency: MEDIUM:
* Bugfixes
- Problem with infinite poll() timeout negative, but not equal to -1 fixed.
- Problem with a file descriptor ready to be read just after a non-blocking
connect call fixed.
- Compile error with EAI_NODATA not defined or equal to EAI_NONAME fixed.
- IP address and TCP port textual representation length (IPLEN) increased
to 128 bytes.
- OpenSSL engine support is only used if engine.h header file exists.
Version 4.06, 2004.12.26, urgency: LOW:
* New feature sponsored by SURFnet http://www.surfnet.nl/
- IPv6 support (to be enabled with ./configure --enable-ipv6).
* New features
- poll() support - no more FD_SETSIZE limit!
- Multiple connect=host:port options are allowed in a single service
section. Remote hosts are connected using round-robin algorithm.
This feature is not compatible with delayed resolver.
- New 'compression' option to enable compression. To use zlib
algorithm you have to enable it when building OpenSSL library.
- New 'engine' option to select a hardware engine.
- New 'TIMEOUTconnect' option with 10 seconds default added.
- stunnel3 perl script to emulate version 3.x command line options.
- French manual updated by Bernard Choppy <choppy AT free POINT fr>.
- A watchdog to detect transfer() infinite loops added.
- Configuration file comment character changed from '#' to ';'.
'#' will still be recognized to keep compatibility.
- MT-safe getaddrinfo() and getnameinfo() are used where available
to get better performance on resolver calls.
- Automake upgraded from 1.4-p4 to 1.7.9.
* Bugfixes
- log() changed to s_log() to avoid conflicts on some systems.
- Common CRIT_INET critical section introduced instead of separate
CRIT_NTOA and CRIT_RESOLVER to avoid potential problems with
libwrap (TCP Wrappers) library.
- CreateThread() finally replaced with _beginthread() on Win32.
- make install creates $(localstatedir)/stunnel.
$(localstatedir)/stunnel/dev/zero is also created on Solaris.
- Race condition with client session cache fixed.
- Other minor bugfixes.
* Release notes
- Default is *not* to use IPv6 '::' for accept and '::1' for
connect. For example to accept pop3s on IPv6 you could use:
'accept = :::995'. I hope the new syntax is clear enough.
* New feature sponsored by SURFnet http://www.surfnet.nl/
- Support for CIFS aka SMB protocol SSL negotiation.
* New features
- CRL support with new CApath and CAfile global options.
- New 'taskbar' option on WIN32 (thx to Ken Mattsen
<ken.Mattsen@roxio.com>).
- New -fd command line parameter to read configuration
from a specified file descriptor instead of a file.
- accept is reported as error with [section] defined (in
stunnel 4.04 it was silently ignored causing problems
for lusers that did not read the fine manual).
- Use fcntl() instead of ioctlsocket() to set socket
nonblocking when it is supported.
- Basic support for hardware engines with OpenSSL >= 0.9.7.
- French manual by Bernard Choppy <choppy@imaginet.fr>.
- Thread stack size reduced to 64KB for maximum scalability.
- Added optional code to debug thread stack usage.
- Support for nsr-tandem-nsk (thx to Tom Bates <tom.bates@hp.com>).
* Bugfixes
- TCP wrappers code moved to CRIT_NTOA critical section
since it uses static inet_ntoa() result buffer.
- SSL_ERROR_SYSCALL handling problems fixed.
- added code to retry nonblocking SSL_shutdown() calls.
- Use FD_SETSIZE instead of 16 file descriptors in inetd
mode.
- fdscanf groks lowercase protocol negotiation commands.
- WIN32 taskbar GDI objects leak fixed.
- Libwrap detection bug in ./configure script fixed.
- grp.h header detection fixed for NetBSD and possibly
other systems.
- Some other minor updates.
* New features sponsored by MAXIMUS http://www.maximus.com/
- New 'options' configuration option to setup
OpenSSL library hacks with SSL_CTX_set_options().
- 'service' option also changes the name for
TCP Wrappers access control in inetd mode.
- SSL is negotiated before connecting remote host
or spawning local process whenever possible.
- REMOTE_HOST variable is always placed in the
enrivonment of a process spawned with 'exec'.
- Whole SSL error stack is dumped on errors.
- Manual page updated (special thanks to Brian Hatch).
- New user interface (config file).
- Single daemon can listen on multiple ports, now.
- Delayed DNS lookup added.
* Other new features
- All the timeouts are now configurable including
TIMEOUTclose that can be set to 0 for MSIE and other
buggy clients that do not send close_notify.
- Stunnel process can be chrooted in a specified directory.
- Numerical values for setuid() and setgid() are allowed, now.
- Confusing code for setting certificate defaults introduced in
version 3.8p3 was removed to simplify stunnel setup.
There are no built-in defaults for CApath and CAfile options.
- Private key file for a certificate can be kept in a separate
file. Default remains to keep it in the cert file.
- Manual page updated.
- Format string bug fixed in protocol.c
smtp, pop3 and nntp in client mode were affected.
(stunnel clients could be attacked by malicious servers)
- Certificate chain can be supplied with -p option or in stunnel.pem.
- Problem with -r and -l options used together fixed.
- memmove() instead of memcpy() is used to move data in buffers.
- More detailed information about negotiated ciphers is printed.
- New ./configure options: "--enable-no-rsa" and "--enable-dh".
Changelog for version 3.21c, 2001.11.11, urgency: LOW:
* autoconf scripts upgraded to version 2.52.
* Problem with pthread_sigmask on Darwin fixed (I hope).
* Some documentation typos corrected.
* Attempt to ignore EINTR in transfer().
* Shared library version reported on startup.
* DLLs for OpenSSL 0.9.6b.
* Problem with errno and posix threads fixed.
* It is assumed that system has getopt() if it has getopt.h header file.
* SSL_CLIENT_DN and SSL_CLIENT_I_DN environment variables set in local mode
(-l) process. This feature doesn't work if
client mode (-c) or protocol negotiation (-n) is used.
* Winsock error descriptions hardcoded (English version only).
* SetConsoleCtrlHandler() used to handle CTRL+C, logoff and shutdown on Win32.
* Stunnel always requests peer certificate with -v 0.
* sysconf()/getrlimit() used to calculate number of clients allowed.
* SSL mode changed for OpenSSL >= 0.9.6.
* close-on-exec option used to avoid socket inheriting.
* Buffer size increased from 8KB to 16KB.
* fdscanf()/fdprintf() changes:
- non-blocking socket support,
- timeout after 1 minute of inactivity.
* auth_user() redesigned to force 1 minute timeout.
* Some source arrangement towards 4.x architecture.
* No need for "goto" any more.
* New Makefile "test" rule. It performs basic test of
standalone/inetd, remote/local and server/client mode.
* pop3 server mode support added.
Changelog for version 3.20, 2001.08.15, urgency: LOW:
* setsockopt() optlen set according to the optval for Solaris.
* Minor NetBSD compatibility fixes by Martti Kuparinen.
* Minor MSVC6 compatibility fixes by Patrick Mayweg.
* SSL close_notify timeout reduced to 10 seconds of inactivity.
* Socket close instead of reset on close_notify timeout.
* Some source arrangement and minor bugfixes.
Based on PR pkg/13679 by Martti Kuparinen.
Changelog for version 3.19, 2001.08.10, urgency: MEDIUM:
* Critical section added around non MT-safe TCP Wrappers code.
* Problem with "select: Interrupted system call" error fixed.
* errno replaced with get_last_socket_error() for Win32.
* Some FreeBSD/NetBSD patches to ./configure from Martti Kuparinen.
* Local mode process pid logged.
* Default FQDN (localhost) removed from stunnel.cnf
* ./configure changed to recognize POSIX threads library on OSF.
* New -O option to set socket options.
Changes:
* Some transfer() bugfixes/improvements.
* STDIN/STDOUT are no logner assumed to be non-socket decriptors.
* Problem with --with-tcp-wrappers patch fixed.
* pop3 and nntp support bug fixed by Martin Germann.
* -o option to append log messages to a file added.
* Changed error message for SSL error 0.
Provided by Martti Kuparinen in PR 13537.
Based on a pkg provided by Martti Kuparinen in PR 13484.
Changes include:
* Serious bug resulting in random transfer() hangs fixed.
* Separate file descriptors are used for inetd mode.
* -f (foreground) logs are now stamped with time.
* New ./configure option: --with-tcp-wrappers by Brian Hatch.
* pop3 protocol client support (-n pop3) by Martin Germann.
* nntp protocol client support (-n nntp) by Martin Germann.
* RFC 2487 (smtp STARTTLS) client mode support.
* Transparency support for Tru64 added.
* Some #includes for AIX added.
default certificate directory is now /etc/openssl/certs (matches OpenSSL's
default), but if stunnel uses the pkgsrc OpenSSL, then the default is
${PREFIX}/certs.
Changes from version 3.8 include:
* Updated temporary key generation:
- stunnel is now honoring requested key-lengths correctly,
- temporary key is changed every hour.
* transfer() no longer hangs on some platforms.
Special thanks to Peter Wagemans for the patch.
* Potential security problem with syslog() call fixed.
* use daemon() function instead of daemonize, if available
* added -S flag, allowing you to choose which default verify
sources to use
* relocated service name output logging until after log_open.
(no longer outputs log info to inetd socket, causing bad SSL)
* -V flag now outputs the default values used by stunnel
* Added rigerous PRNG seeding
* PID changes (and related security-fix)
* Man page fixes
* Client SSL Session-IDs now used
* -N flag to specify tcpwrapper service name
* UPGRADE NOTE: this version seriously changes several previous stunnel
default behaviours. There are no longer any default cert file/dirs
compilied into stunnel, you must use the --with-cert-dir and
--with-cert-file configure arguments to set these manually, if desired.
Stunnel does not use the underlying ssl library defaults by default
unless configured with --enable-ssllib-cs. Note that these can always
be enabled at run time with the -A,-a, and -S flags.
Additionally, unless --with-pem-dir is specified at compile time,
stunnel will default to looking for stunnel.pem in the current directory.
