Releases: Bitcoin Core 0.10.3

This adds the Bitcoin Core 0.10.3 release notes to bitcoin.org.

_releases/0.10.3.md

@@ -0,0 +1,195 @@
+---
+# This file is licensed under the MIT License (MIT) available on
+# http://opensource.org/licenses/MIT.
+
+## Required value below populates the %v variable (note: % needs to be escaped in YAML if it starts a value)
+required_version: 0.10.3
+## Optional release date.  May be filled in hours/days after a release
+optional_date: 2015-10-14
+## Optional title.  If not set, default is: Bitcoin Core version %v released
+optional_title: Bitcoin Core version %v released
+## Optional magnet link.  To get it, open the torrent in a good BitTorrent client
+## and View Details, or install the transmission-cli Debian/Ubuntu package
+## and run: transmission-show -m <torrent file>
+#
+## Link should be enclosed in quotes and start with: "magnet:?
+optional_magnetlink:
+
+## The --- below ends the YAML header. After that, paste the release notes.
+## Warning: this site's Markdown parser commonly requires you make two
+## changes to the release notes from the Bitcoin Core source tree:
+##
+## 1. Make sure both ordered and unordered lists are preceded by an empty
+## (whitespace only) line, like the empty line before this list item.
+##
+## 2. Place URLs inside angle brackets, like <http://bitcoin.org/bin>
+
+---
+{% githubify https://github.com/bitcoin/bitcoin %}
+Bitcoin Core version 0.10.3 is now available from:
+
+  <https://bitcoin.org/bin/bitcoin-core-0.10.3/>
+
+This is a new minor version release, bringing security fixes and translation
+updates. It is recommended to upgrade to this version as soon as possible.
+
+Please report bugs using the issue tracker at github:
+
+  <https://github.com/bitcoin/bitcoin/issues>
+
+Upgrading and downgrading
+=========================
+
+How to Upgrade
+--------------
+
+If you are running an older version, shut it down. Wait until it has completely
+shut down (which might take a few minutes for older versions), then run the
+installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
+bitcoind/bitcoin-qt (on Linux).
+
+Downgrade warning
+------------------
+
+Because release 0.10.0 and later makes use of headers-first synchronization and
+parallel block download (see further), the block files and databases are not
+backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
+
+* Blocks will be stored on disk out of order (in the order they are
+received, really), which makes it incompatible with some tools or
+other programs. Reindexing using earlier versions will also not work
+anymore as a result of this.
+
+* The block index database will now hold headers for which no block is
+stored on disk, which earlier versions won't support.
+
+If you want to be able to downgrade smoothly, make a backup of your entire data
+directory. Without this your node will need start syncing (or importing from
+bootstrap.dat) anew afterwards. It is possible that the data from a completely
+synchronised 0.10 node may be usable in older versions as-is, but this is not
+supported and may break as soon as the older version attempts to reindex.
+
+This does not affect wallet forward or backward compatibility.
+
+Notable changes
+===============
+
+Fix buffer overflow in bundled upnp
+------------------------------------
+
+Bundled miniupnpc was updated to 1.9.20151008. This fixes a buffer overflow in
+the XML parser during initial network discovery.
+
+Details can be found here: <http://talosintel.com/reports/TALOS-2015-0035/>
+
+This applies to the distributed executables only, not when building from source or
+using distribution provided packages.
+
+Additionally, upnp has been disabled by default. This may result in a lower
+number of reachable nodes on IPv4, however this prevents future libupnpc
+vulnerabilities from being a structural risk to the network
+(see <https://github.com/bitcoin/bitcoin/pull/6795>).
+
+Test for LowS signatures before relaying
+-----------------------------------------
+
+Make the node require the canonical 'low-s' encoding for ECDSA signatures when
+relaying or mining.  This removes a nuisance malleability vector.
+
+Consensus behavior is unchanged.
+
+If widely deployed this change would eliminate the last remaining known vector
+for nuisance malleability on SIGHASH_ALL P2PKH transactions. On the down-side
+it will block most transactions made by sufficiently out of date software.
+
+Unlike the other avenues to change txids on transactions this
+one was randomly violated by all deployed bitcoin software prior to
+its discovery. So, while other malleability vectors where made
+non-standard as soon as they were discovered, this one has remained
+permitted. Even BIP62 did not propose applying this rule to
+old version transactions, but conforming implementations have become
+much more common since BIP62 was initially written.
+
+Bitcoin Core has produced compatible signatures since a28fb70e in
+September 2013, but this didn't make it into a release until 0.9
+in March 2014; Bitcoinj has done so for a similar span of time.
+Bitcoinjs and electrum have been more recently updated.
+
+This does not replace the need for BIP62 or similar, as miners can
+still cooperate to break transactions.  Nor does it replace the
+need for wallet software to handle malleability sanely[1]. This
+only eliminates the cheap and irritating DOS attack.
+
+[1] On the Malleability of Bitcoin Transactions
+Marcin Andrychowicz, Stefan Dziembowski, Daniel Malinowski, Łukasz Mazurek
+<http://fc15.ifca.ai/preproceedings/bitcoin/paper_9.pdf>
+
+Minimum relay fee default increase
+-----------------------------------
+
+The default for the `-minrelaytxfee` setting has been increased from `0.00001`
+to `0.00005`.
+
+This is necessitated by the current transaction flooding, causing
+outrageous memory usage on nodes due to the mempool ballooning. This is a
+temporary measure, bridging the time until a dynamic method for determining
+this fee is merged (which will be in 0.12).
+
+(see <https://github.com/bitcoin/bitcoin/pull/6793>, as well as the 0.11.0
+release notes, in which this value was suggested)
+
+0.10.3 Change log
+=================
+
+Detailed release notes follow. This overview includes changes that affect external
+behavior, not code moves, refactors or string updates.
+
+- #6186 `e4a7d51` Fix two problems in CSubnet parsing
+- #6153 `ebd7d8d` Parameter interaction: disable upnp if -proxy set
+- #6203 `ecc96f5` Remove P2SH coinbase flag, no longer interesting
+- #6226 `181771b` json: fail read_string if string contains trailing garbage
+- #6244 `09334e0` configure: Detect (and reject) LibreSSL
+- #6276 `0fd8464` Fix getbalance * 0
+- #6274 `be64204` Add option `-alerts` to opt out of alert system
+- #6319 `3f55638` doc: update mailing list address
+- #6438 `7e66e9c` openssl: avoid config file load/race
+- #6439 `255eced` Updated URL location of netinstall for Debian
+- #6412 `0739e6e` Test whether created sockets are select()able
+- #6694 `f696ea1` [QT] fix thin space word wrap line brake issue
+- #6704 `743cc9e` Backport bugfixes to 0.10
+- #6769 `1cea6b0` Test LowS in standardness, removes nuisance malleability vector.
+- #6789 `093d7b5` Update miniupnpc to 1.9.20151008
+- #6795 `f2778e0` net: Disable upnp by default
+- #6797 `91ef4d9` Do not store more than 200 timedata samples
+- #6793 `842c48d` Bump minrelaytxfee default
+
+Credits
+=======
+
+Thanks to everyone who directly contributed to this release:
+
+- Adam Weiss
+- Alex Morcos
+- Casey Rodarmor
+- Cory Fields
+- fanquake
+- Gregory Maxwell
+- Jonas Schnelli
+- J Ross Nicoll
+- Luke Dashjr
+- Pavel Vasin
+- Pieter Wuille
+- randy-waterhouse
+- ฿tcDrak
+- Tom Harding
+- Veres Lajos
+- Wladimir J. van der Laan
+
+And all those who contributed additional code review and/or security research:
+
+- timothy on IRC for reporting the issue
+- Vulnerability in miniupnp discovered by Aleksandar Nikolic of Cisco Talos
+
+As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
+
+{% endgithubify %}