[secnet.git] / debian / changelog

secnet (0.6.0~) unstable; urgency=medium

  Bugfixes:
  * mobile sites: Do not ever expire peer addresses.  In practice
    this fixes transitions between IPv6-only and IPv4-only networks.
  * make-secnet-sites: Tainted: Fix a lot of bad return values
    (which would result in assertions rather than nice error messages).
  * Fix hash algo confusion in mixed sha1/md5 configurations (see below).

  Incompatible changes:
  * site: Always advertise all capabilities, even in MSG1.  This is
    incompatible with secnets earlier than 0.3.0 (September 2013), which
    are all quite badly broken and should have been upgraded long ago.
  * Drop support for using the same loaded rsa key with multiple different
    hash algorithms (which was broken in 0.5.0).  Right now we support
    only `sha1' and `md5' so everyone should be using `sha1'.
    Installations which specified `md5' anywhere may need config changes.

  Major new featureset (use of which is not adviseable yet):
  * New facilities for negotiating about the signing keys to use for
    authentication during key setup, and selecting and using the
    appropriate keys.  (``key-cache'/`privcache' and `peer-keys').
    Using these new facilities for keyrollover now is in principle
    possible but rather complex.  Further machinery is planned;
    for now, retain your existing config which should keep working.
    In summary:
       - secnet: new `privcache' closure;
       - secnet: `key-cache' and `peer-keys' keys on site closures;
       - secnet: new file format for peer public keysets;
       - secnet: new `make-public' config operator;
       - make-secnet-sites `pub', `pkg', `serial', etc. keywords;
       - make-secnet-sites --filter, --pubkeys-*, --output-version.

  More minor (logging) improvements:
  * Make stderr line buffered and log to it by default.
  * Do not log differently with --nodetach.
  * New `prefix' option to `logfile' closure.
  * Tidy and simplify some messages.

  Supporting changes:
  * Many substantial internal refactorings in secnet.
  * Many substantial internal refactorings in make-secnet-sites.
  * make-secnet-sites option parsing totally replaced.
  * Imported subtrees for base91-c and base91-python.
  * New portablity code, etc.: osdep.[ch], fmemopen reimplementation.
  * Explicitly define oddly-rotated dh padding arrangement (write_mpbin).

  Build system and packaging:
  * Do not fail to build from git when HEAD refers to a packed ref.
  * Update to subdirmk 0.3.
  * Many makefile fixes (esp. to clean and cdeps).
  * configure.ac: Drop or suppress some very obsolete checks.
  * autogen.sh: Write a comment about need for autoheader.
  * dir-locals: Provide python-indent-offset too.

  Test suite bugfixes:
  * stest: Use stderr, not tty, for logging.
  * stest/udp-preload.c: Fix error handling of sun_prep.
  * stest: Fix breakage if nproc is not installed.

  Test suite improvements:
  * New tests, including tests for new features.
  * Existing tests (especially stest) generally made more thorough.
  * New comprehensive-test and pretest-to-tested convenience scripts.
  * Arrangements for testing with (user-provided) old secnet.
  * parallel-test.*: scripts to help with parallelised bisection.
  * stest: Print a lot more output about what we are doing.
  * stest: Better support for cwd with longish pathname.
  * stest: More flexibility, env var hooks, etc.

 --

secnet (0.5.1) unstable; urgency=medium

  POTENTIALLY INCOMPATIBLE CHANGE.  Some security implications.

  * make-secnet-sites: Prefix names when writing secnet sites.conf file.

    make-secnet-sites must copy names (vpn, location and site names) from
    the input sites file (which is not wholly trusted) to the secnet
    config file.  Prior to this release, naming a location or site the
    same as a secnet predefined name could generate a broken sites.conf
    which secnet would reject.  (With the existing featureset,
    malfunctions other than rejection, eg privilege escalation, are not
    possible.)

    make-secnet-sites now adds a prefix to these names when writing
    sites.conf.  This will not affect configurations which use the
    make-secnet-sites-provided `all-sites' key, as is usual.  Other
    configurations will break unless the references in the static part of
    the config are adjusted.

    Previous behaviour can be restored with the --no-conf-key-prefix
    option.  (Planned future enhancements to secnet are likely to make use
    of that option, with untrusted input, dangerously insecure.)

  other changes to make-secnet-sites:
  * Fix argument parsing.  Fixes a regression affecting -P in 0.5.0,
    and also fixes new facilities introduced in 0.5.0.
  * Sort the properties on output (and adjust the test case expected
    outputs).  Tests now pass on (at least) Python 2.7.13, 3.5.3, 3.7.5.
  * Delete some unused code.

  secnet:
  * Change one idiom to avoid a warning from GCC9.  No functional change.

  build system - MAJOR CHANGES:
  * Fix out-of-tree builds.  (Broken in 0.5.0)
  * Replace recursive make with use of the new subdirmk system.
    This represents a fairly comprehensive overhaul of the makefiles.
    Several bugs (esp. involving dependencies between files in different
    directories) are fixed.
  * Drop `make check' from `make all'.  (Otherwise there is no way
    to ask for `all' without `check'.)
  * Suppress two unhelpful new compiler warnings from GCC9.
  * Release checklist update.

  documentation:
  * Credit Mark Wooding properly in CREDITS.
  * Include DEVELOPER-CERTIFICATE.

  tests:
  * Locations now have different names to sites.
  * Somewhat better debugging output from mtest.
  * Do not run msgcode-test except with `make fullcheck'.
  * Other minor bugfixes and improvments.
  * stest: Suppress unhelpful -Wno-unused-result (needed for stretch).

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Fri, 22 Nov 2019 23:13:14 +0000

secnet (0.5.0) unstable; urgency=medium

  make-secnet-sites SECURITY FIX:
  * Do not blindly trust inputs; instead, check the syntax for sanity.
    Previous releases can be induced to run arbitrary code as the user
    invoking secnet (which might be root), if a secnet sites.conf is used
    that was generated from an untrustworthy sites file.
  * The userv invocation mode of make-secnet-sites seems to have been safe
    in itself, but it previously allowed hazardous data to be propagated
    into the master sites file.  This is now prevented too.

  make-secnet-sites overhaul work:
  * make-secnet-sites is now in the common subset of Python2 and Python3.
    The #! is python3 now, but it works with Python2.7 too.
    It will probably *not* work with old versions of Python2.
  * We no longer depend on the obsolete `ipaddr' library.  We use
    `ipaddress' now.  And this is onlo a Recommends in the .deb.
  * Ad-hoc argument parser been replaced with `argparse'.
    There should be no change to existing working invocations.
  * Bad address syntax error does not wrongly mention IPv6 scopes.
  * Minor refactoring to support forthcoming work.  [Mark Wooding]

  other bugfixes, improvements and changes to secnet itself:
  * Better logging of why we are sending NAK messages.
  * Correctly use the verified copy of the peer remote capabilities
    from MSG3.  (Bug is not a vulnerability.)    [Mark Wooding]
  * Significant internal rearrangements and refactorings, to support
    forthcoming key management work.  [Mark Wooding and Ian Jackson]

  build system etc.:
  * Completely overhaul release checklist; drop dist target.
  * Remove dependency on `libfl.a'.  [Mark Wooding]
  * polypath.c: Fix missing include of <limits.h>.  [Mark Wooding]
  * Add a Wireshark dissector `secnet-wireshark.lua'.  It is not
    installed anywhere right now.  [Mark Wooding]

  documentation:
  * Improve documentation of capability negotiation in NOTES, secnet(8)
    and magic.h.  [Mark Wooding]

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 24 Oct 2019 19:11:54 +0100

secnet (0.4.5) unstable; urgency=medium

  * INSTALL: Mention that rsa key generation might need ssh-keygen1.
  * mobile: Fix negotiation bug with mixed old/new secnets and
    simultaneous key setup attempts by each end.  [Mark Wooding]
  * Makefile.in: Support installation from a `VPATH' build.  [Mark Wooding]
  * Portability fixes for clang.  [Mark Wooding]

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sat, 21 Sep 2019 12:04:31 +0100

secnet (0.4.4) unstable; urgency=medium

  Security fix:
  * make-secnet-sites: Don't allow setting new VPN-level properties
    when restricted.  This could allow denial of service by
    users with delegated authorisation.  [Mark Wooding]

  Bugfixes for poor network environments:
  * polypath: cope properly with asymmetric routing, by correcting
    the handling of late duplicated packets etc.   Protocol is now
    incompatible with secnet prior to 0.3.0 when either end is mobile.
  * Randomise key setup retry time.

  Other bugfixes:
  * rsa and cbcmac: Fix configuration error messages.  [Mark Wooding]
  * Handle IPv4 addresses properly (ie, not foolishly byte-swapped),
    when IPv6 is not available.  [Mark Wooding]
  * Better logging (and less foolish debug), especially about whether
    key is set up, and about crossed key setup attempts.
  * Internal refactoring and fixes.  [Ian Jackson and Mark Wooding]

  Build system and portability:
  * configure: rerun autogen.sh with autoconf 2.69-10
  * Avoid memset(0,0,0) wrt st->sharedsecret.  (Fixes compiler warning;
    in theory might cause miscompilation.)  [Mark Wooding]

  Documentation:
  * README.make-secnet-sites: new documentation file.  [Mark Wooding]
  * NOTES: Describe current allocation of capability bits.  [Mark Wooding]
  * NOTES: tiny fix tot protocol description.
  * secnet(8): Delete wrong information about dh groups.  [Mark Wooding]

  Administrivia:
  * Fix erroneous GPL3+ licence notices "version d or later" (!)
  * .dir-locals.el: Settings for Python code.  [Mark Wooding]

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sun, 08 Sep 2019 22:53:14 +0100

secnet (0.4.3) unstable; urgency=low

  Security improvement:
  * Use `mpz_powm_sec' for modexps.

  Enhancements:
  * Implement comm-info and dedicated-interface-addr feature, for
    benefit of hippotat.
  * Implement `keepalive' site option, to try to keep link always up.

  Build etc. fixes:
  * #include <limits.h> (fixes the build on jessie).
  * Tolerate building from a git checkout, but with git not installed.
    (This can happen in chroots.)
  * Turn off -Wsign-compare for bison output.
  * Makefile.in: Fix `check-ipaddrset' rule to get reference from
    $(srcdir).  (Makes out-of-tree builds work properly.)
  * Release checklist fixes.
  * Burn version numbers 0.4.1 and 0.4.2 due to errors in release prep.

  Bugfixes:
  * When printing messages about dropping IPv6, do not print anything
    about ihl.  (Check the IP version field first!)
  * When turning on debug, turn on verbose too.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sat, 25 Nov 2017 13:36:41 +0000

secnet (0.4.0) unstable; urgency=low

  Debugging improvements:
  * Packet-level debugging from site notes errors from transmit.
  * Report when transport peers updated as a result of transmit.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sat, 28 Feb 2015 15:03:00 +0000

secnet (0.4.0~beta2) unstable; urgency=low

  Polypath bugfixes:
  * Ignore IPv6 Unique Local unicast addresses.
  * Skip "tentative" IPv6 local addresses.
  * Improve logging and debug output.

  Portability fix:
  * Build where size_t is not compatible with int.

  Build system and packaging fixes:
  * Makefile: support DESTDIR.
  * debian/rules: set DESTDIR (not prefix).
  * debian/rules: Support dpkg-buildflags.
  * Install ipaddrset.py and secnet.8 with correct permissions.
  * Fix check for <linux/if_tun.h> and git rid of our copy.
  * Use -lresolv only if inet_aton is not found otherwise.
  * Use -lnsl only if inet_ntoa is not found otherwise.
  * debian/rules: Provide build-arch and build-indep targets.
  * debian/rules: Do not run build for *-indep (!)
  * Makefile.in: Putative dual (backport and not) release build process doc.

  Copyright updates:
  * Update to GPLv3.  Add missing copyright notices and credits.
  * Get rid of old FSF street address; use URL instead.
  * Remove obsolete LICENCE.txt (which was for snprintf reimplementation).
  * Remove obsolete references to Cendio (for old ipaddr.py).

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sun, 28 Dec 2014 17:14:10 +0000

secnet (0.4.0~beta1) unstable; urgency=low

  New features:
  * Support transport over IPv6.  (We do not yet carry IPv6 in the private
    network.)  IPv6 support depends on IPv6-capable adns (adns 1.5.x).
  * New polypath comm, which can duplicate packets so as to send them via
    multiple routes over the public network, for increased
    reliability/performance (but increased cost).  Currently Linux-only
    but should be fairly easy to port.
  * Support multiple public addresses for peers.
  * Discard previously-received packets (by default).

  Logging improvements:
  * Report (each first) transmission and reception success and failure.
  * Log reason for DNS reolution failure.
  * Log unexpected kinds of death from userv.
  * Log authbind exit status as errno value (if appropriate).

  Configuration adjustments:
  * Adjust default number of mobile peer addresses to store when a peer
    public address is also configured.
  * Make specifying peer public port optional.  This avoids making special
    arrangements to bind to a port for in mobile sites with no public
    stable address.

  Bugfixes:
  * Hackypar children will die if they get a terminating signal.
  * Fix signal dispositions inherited by secnet's child processes.
  * Fix off-by-one error which prevented setting transport-peers-max to 5.

  Test, build and internal improvements:
  * Use conventional IP address handling library ipaddr.py.
  * Provide a fuzzer for the slip decoder.
  * Build system improvements.
  * Many source code cleanups.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sun, 26 Oct 2014 15:28:31 +0000

secnet (0.3.4) unstable; urgency=low

  SECURITY FIX:
  * The previous security fix to buffer handling was entirely wrong.  This
    one is better.  Thanks to Simon Tatham for the report and the patch.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Mon, 22 Sep 2014 16:16:11 +0100

secnet (0.3.3) unstable; urgency=high

  SECURITY FIXES:
  * Pass correct size argument to recvfrom.  This is a serious security
    problem which may be exploitable from outside the VPN.
  * Fix a memory leak in some error logging.

  Other related fixes:
  * Two other latent bugs in buffer length handling found and fixed.
  * Non-critical stylistic improvements to buffer length handling, to make
    the code clearer and to assist audit.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Fri, 19 Sep 2014 23:50:45 +0100

secnet (0.3.3~beta1) unstable; urgency=low

  Installation compatibility fix:
  * In make-secnet-sites, always use our own ipaddr.py even if the
    incompatible modern ipaddr.py is installed (eg via python-ipaddr.deb).
    (Future versions of secnet are going to need that Python module to be
    installed.)

  For links involving mobile sites:
  * Use source of NAK packets as hint for peer transport address.
  * When initiating rekey, make use of data transport peer addresses.

  Build fix:
  * Provide clean target in test-example/Makefile.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Fri, 19 Sep 2014 00:11:44 +0100

secnet (0.3.2) unstable; urgency=low

  * Release of 0.3.2.  No code changes since 0.3.1~beta1.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 26 Jun 2014 20:27:58 +0100

secnet (0.3.2~beta1) unstable; urgency=low

  For links involving mobile sites:
  * SECURITY: Properly update peer address array when it is full.
  * Do name-resolution on peer-initiated key setup too, when we are mobile
    (and other name-resolution improvements).

  Other minor improvements:
  * Log peer addresses on key exchange timeout.
  * When printing version (eg during startup), use value from git-describe
    and thus include git commit id where applicable.
  * Updates to release checklist in Makefile.in.
  * Use C99 _Bool for bool_t.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Fri, 06 Jun 2014 01:17:54 +0100

secnet (0.3.1) unstable; urgency=low

  * Release of 0.3.1.  No code changes since 0.3.1~beta3.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 15 May 2014 01:08:30 +0100

secnet (0.3.1~beta3) unstable; urgency=low

  * Build fixes for non-i386 architectures and gcc 4.8.2.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 08 May 2014 19:53:43 +0100

secnet (0.3.1~beta2) unstable; urgency=low

  Fix relating to new fragmentation / ICMP functionality:
  * Generate ICMP packets correctly in point-to-point configurations.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sat, 03 May 2014 18:58:09 +0100

secnet (0.3.1~beta1) unstable; urgency=low

  Security fixes (vulnerabilities are to inside attackers only):
  * SECURITY: Fixes to MTU and fragmentation handling.
  * SECURITY: Correctly set "unused" ICMP header field.
  * SECURITY: Fix IP length check not to crash on very short packets.

  New feature:
  * Make the inter-site MTU configurable, and negotiate it with the peer.

  Bugfixes etc.:
  * Fix netlink SEGV on clientless netlinks (i.e. configuration error).
  * Fix formatting error in p-t-p startup message.
  * Do not send ICMP errors in response to unknown incoming ICMP.
  * Fix formatting error in secnet.8 manpage.
  * Internal code rearrangements and improvements.

  Packaging improvements:
  * Updates to release checklist in Makefile.in.
  * Additions to the test-example suite.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 01 May 2014 19:02:56 +0100

secnet (0.3.0) unstable; urgency=low

  * Release of 0.3.0.  No code changes since 0.3.0~beta3.
  * Update release checklist.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sun, 01 Sep 2013 20:27:48 +0100

secnet (0.3.0~beta3) unstable; urgency=low

  * New upstream version.
   - Stability bugfix: properly initialise site's scratch buffer.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Mon, 05 Aug 2013 11:54:09 +0100

secnet (0.3.0~beta2) unstable; urgency=low

  * New upstream version.
   - SECURITY FIX: RSA public modulus and exponent buffer overflow.
   - SECURITY FIX: Use constant-time memcmp for message authentication.
   - SECURITY FIX: Provide a new transform, eax-serpent, to replace cbcmac.
   - SECURITY FIX: No longer send NAKs for NAKs, avoiding NAK storm.
   - SECURITY FIX: Fix site name checking when site name A is prefix of B.
   - SECURITY FIX: Safely reject too-short IP packets.
   - Better robustness for mobile sites (proper user of NAKs, new PROD msg).
   - Better robustness against SLIP decoding errors.
   - Fix bugs which caused routes to sometimes not be advertised.
   - Protocol capability negotiation mechanism.
   - Improvements and fixes to protocol and usage documentation.
   - Other bugfixes and code tidying up.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 25 Jul 2013 18:26:01 +0100

secnet (0.3.0~beta1) unstable; urgency=low

  * New upstream version.
   - SECURITY FIX: avoid crashes (or buffer overrun) on short packets.
   - Bugfixes relating to packet loss during key exchange.
   - Bugfixes relating to link up/down status.
   - Bugfixes relating to logging.
   - make-secnet-sites made more sophisticated to support two vpns on chiark.
   - Documentation improvements.
   - Build system improvements.
  * Debian packaging improvements:
   - Native package.
   - Maintainer / uploaders.
   - init script requires $remove_fs since we're in /usr.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Thu, 12 Jul 2012 20:18:16 +0100

secnet (0.2.1-1) unstable; urgency=low

  * New upstream version.  (authbind endianness fix)

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sun, 11 Dec 2011 13:14:57 +0000

secnet (0.2.0-1) unstable; urgency=low

  * New upstream version.

 -- Ian Jackson <ijackson@chiark.greenend.org.uk>  Sat, 10 Dec 2011 22:44:41 +0000

secnet (0.1.18-1) unstable; urgency=low

  * New upstream version.

 -- Stephen Early <steve@greenend.org.uk>  Tue,  18 Mar 2008 17:45:00 +0000