1 Bitcoin-Qt version 0.8.4 is now available from:
2 http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.4/
4 This is a maintenance release to fix a critical bug and three
5 security issues; we urge all users to upgrade.
7 Please report bugs using the issue tracker at github:
8 https://github.com/bitcoin/bitcoin/issues
14 If you are running an older version, shut it down. Wait
15 until it has completely shut down (which might take a few minutes for older
16 versions), then run the installer (on Windows) or just copy over
17 /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
19 If you are upgrading from version 0.7.2 or earlier, the first time you
20 run 0.8.4 your blockchain files will be re-indexed, which will take
21 anywhere from 30 minutes to several hours, depending on the speed of
30 An attacker could send a series of messages that resulted in
31 an integer division-by-zero error in the Bloom Filter handling
32 code, causing the Bitcoin-Qt or bitcoind process to crash.
33 Bloom filters were introduced with version 0.8, so versions 0.8.0
34 through 0.8.3 are vulnerable to this critical denial-of-service attack.
36 A constant-time algorithm is now used to check RPC password
37 guess attempts; fixes https://github.com/bitcoin/bitcoin/issues/2838
40 Implement a better fix for the fill-memory-with-orphan-transactions
41 attack that was fixed in 0.8.3. See
42 https://bitslog.wordpress.com/2013/07/18/buggy-cve-2013-4627-patch-open-new-vectors-of-attack/
43 for a description of the weaknesses of the previous fix.
49 Fix multi-block reorg transaction resurrection.
51 Fix non-standard disconnected transactions causing mempool orphans.
52 This bug could cause nodes running with the -debug flag to crash.
54 OSX: use 'FD_FULLSYNC' with LevelDB, which will (hopefully!)
55 prevent the database corruption issues many people have
58 Linux: clicking on bitcoin: links was broken if you were using
59 a Gnome-based desktop.
61 Fix a hang-at-shutdown bug that only affects users that compile
62 their own version of Bitcoin against Boost versions 1.50-1.52.
67 Checkpoint at block 250,000 to speed up initial block downloads
68 and make the progress indicator when downloading more accurate.
71 Thanks to everybody who contributed to the 0.8.4 releases!
72 ----------------------------------------------------------