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authorNick Mathewson <nickm@torproject.org>2014-06-18 11:51:27 -0400
committerNick Mathewson <nickm@torproject.org>2014-06-18 11:51:27 -0400
commita94a39ffc14f5516983b6c8f896088b9b6adda59 (patch)
treeffcfc1455a868d8e1337cbb68ed1926908024821
parent565c9d436f52467d004c351eacfab5db8c17ac83 (diff)
downloadtor-a94a39ffc14f5516983b6c8f896088b9b6adda59.tar
tor-a94a39ffc14f5516983b6c8f896088b9b6adda59.tar.gz
Re-wrap the 0.2.5.5-alpha changelog
-rw-r--r--ChangeLog101
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diff --git a/ChangeLog b/ChangeLog
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@@ -1,22 +1,24 @@
Changes in version 0.2.5.5-alpha - 2014-06-1?
Tor 0.2.5.5-alpha fixes a wide variety of remaining issues in the Tor
- 0.2.5.x release series, including a couple of DoS issues, some performance
- regressions, and a large number of bugs affecting the Linux
- seccomp2 sandbox code, and various other bugfixes. It also adds diagnostic
- bugfixes for a few tricky issues that we're trying to track down.
+ 0.2.5.x release series, including a couple of DoS issues, some
+ performance regressions, and a large number of bugs affecting the
+ Linux seccomp2 sandbox code, and various other bugfixes. It also adds
+ diagnostic bugfixes for a few tricky issues that we're trying to
+ track down.
o Major features (security, traffic analysis resistance):
- - Several major improvements to the algorithm used to decide
- when to close TLS connections. Previous versions of Tor closed connections
- at a fixed interval after the last time a non-padding cell was sent
- over the connection, regardless of the target of the connection. Now,
- we randomize the intervals by adding up to 50% of their base value,
- we measure the length of time since connection last had at least one
- circuit, and we we allow connections to known ORs to remain open a
- little longer (15 minutes instead of 3 minutes minimum). These changes
- should improve Tor's resistance against some kinds of traffic analysis,
- and lower some overhead from needlessly closed connections. Fixes
- ticket 6799. Incidentally fixes ticket 12023; bugfix on 0.2.5.1-alpha.
+ - Several major improvements to the algorithm used to decide when to
+ close TLS connections. Previous versions of Tor closed connections
+ at a fixed interval after the last time a non-padding cell was
+ sent over the connection, regardless of the target of the
+ connection. Now, we randomize the intervals by adding up to 50% of
+ their base value, we measure the length of time since connection
+ last had at least one circuit, and we we allow connections to
+ known ORs to remain open a little longer (15 minutes instead of 3
+ minutes minimum). These changes should improve Tor's resistance
+ against some kinds of traffic analysis, and lower some overhead
+ from needlessly closed connections. Fixes ticket 6799.
+ Incidentally fixes ticket 12023; bugfix on 0.2.5.1-alpha.
o Major bugfixes (security, OOM, new since 0.2.5.4-alpha, also in 0.2.4.22):
- Fix a memory leak that could occur if a microdescriptor parse
@@ -41,15 +43,16 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
router's identity is not forgeable.
o Major bugfixes (relay):
- - Use a direct dirport connection when uploading non-anonymous descriptors to the directory authorities.
- object. Previously, relays would incorrectly use tunnel connections
- under a fairly wide variety of circumstances. Fixes bug 11469; bugfix
+ - Use a direct dirport connection when uploading non-anonymous
+ descriptors to the directory authorities. object. Previously,
+ relays would incorrectly use tunnel connections under a fairly
+ wide variety of circumstances. Fixes bug 11469; bugfix
on 0.2.4.3-alpha.
- When a circuit accidentally has the same circuit ID for its
forward and reverse direction, correctly detect the direction of
- cells using that circuit. Previously, this bug made roughly
- one circuit in a million non-functional. Fixes bug 12195; this is
- a bugfix on every version of Tor.
+ cells using that circuit. Previously, this bug made roughly one
+ circuit in a million non-functional. Fixes bug 12195; this is a
+ bugfix on every version of Tor.
o Major bugfixes (client, pluggable transports):
- When managing pluggable transports, use OS notification facilities
@@ -58,17 +61,17 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
on 0.2.3.6-alpha.
o Minor features (diagnostic):
- - When logging a warning because of bug 7164, additionally check
- the hash table for consistency (as proposed on ticket 11737).
- This may help diagnose bug 7164.
+ - When logging a warning because of bug 7164, additionally check the
+ hash table for consistency (as proposed on ticket 11737). This may
+ help diagnose bug 7164.
- When we log a heartbeat, log how many one-hop circuits we have
that are at least 30 minutes old, and log status information about
a few of them. This is an attempt to track down bug 8387.
- - When encountering an unexpected CR while writing text to a
- file on Windows, log the name of the file. Should help
- diagnosing bug 11233.
- - Give more specific warnings when a client notices that
- an onion handshake has failed. Fixes ticket 9635.
+ - When encountering an unexpected CR while writing text to a file on
+ Windows, log the name of the file. Should help diagnosing
+ bug 11233.
+ - Give more specific warnings when a client notices that an onion
+ handshake has failed. Fixes ticket 9635.
- Add significant new logging code to attempt to diagnose bug 12184,
where relays seem to run out of available circuit IDs.
- Improve the diagnostic log message for bug 8387 even further to
@@ -76,13 +79,12 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
circuits sometimes do not get closed.
o Minor features (security, memory management):
- - Memory allocation tricks (mempools and buffer freelists)
- are now disabled by default. You can turn them back on with
- --enable-mempools and --enable-buf-freelists respectively.
- We're disabling these features because malloc performance is good
- enough on most platforms, and a
- similar feature in OpenSSL exacerbated exploitation of the Heartbleed
- attack. Resolves ticket 11476.
+ - Memory allocation tricks (mempools and buffer freelists) are now
+ disabled by default. You can turn them back on with
+ --enable-mempools and --enable-buf-freelists respectively. We're
+ disabling these features because malloc performance is good enough
+ on most platforms, and a similar feature in OpenSSL exacerbated
+ exploitation of the Heartbleed attack. Resolves ticket 11476.
o Minor features (security):
- Apply the secure SipHash-2-4 function to the hash table mapping
@@ -106,15 +108,14 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
bugfix on 0.2.1.1-alpha.
o Minor bugfixes (performance):
- - Avoid a bug where every successful connection made us recompute the
- flag telling us whether we have sufficient information to build
- circuits. Previously,
- we would forget our cached value
+ - Avoid a bug where every successful connection made us recompute
+ the flag telling us whether we have sufficient information to
+ build circuits. Previously, we would forget our cached value
successfully opened a channel (or marked a router as running or
not running for any other reason), regardless of whether we had
previously believed the router to be running. This forced us to
- run an expensive update operation far too often.
- Fixes bug 12170; bugfix on 0.1.2.1-alpha.
+ run an expensive update operation far too often. Fixes bug 12170;
+ bugfix on 0.1.2.1-alpha.
- Avoid using tor_memeq() for checking relay cell integrity. This
removes a possible performance bottleneck. Fixes part of bug
12169; bugfix on 0.2.1.31.
@@ -179,9 +180,9 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
- Avoid warnings when running with sandboxing enabled at the same
time as cookie authentication, hidden services or directory
authority voting. Fixes part of 12064; bugfix on 0.2.5.1-alpha.
- - Do not allow options that require calls to exec to be
- enabled alongside the seccomp2 sandbox: they will inevitably
- crash. Fixes bug 12043; bugfix on 0.2.5.1-alpha.
+ - Do not allow options that require calls to exec to be enabled
+ alongside the seccomp2 sandbox: they will inevitably crash. Fixes
+ bug 12043; bugfix on 0.2.5.1-alpha.
- Handle failures in getpwnam()/getpwuid() when running with the
User option set and the Linux syscall sandbox enabled. Fixes bug
11946; bugfix on 0.2.5.1-alpha.
@@ -255,8 +256,8 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
v2 link handshake. Fixes bug 12227; bugfix on 0.2.4.8-alpha. Found
by "starlight".
- When rejecting DATA cells for stream_id zero, still count them
- against the circuit's deliver window so that we don't fail to
- send a SENDME. Fixes bug 11246; bugfix on 0.2.4.10-alpha.
+ against the circuit's deliver window so that we don't fail to send
+ a SENDME. Fixes bug 11246; bugfix on 0.2.4.10-alpha.
o Minor bugfixes (logging):
- Fix a misformatted log message about delayed directory fetches.
@@ -285,9 +286,9 @@ Changes in version 0.2.5.5-alpha - 2014-06-1?
caches don't get confused.
o Package cleanup:
- - The contrib directory has been sorted and tidied. Before, it was an
- unsorted dumping ground for useful and not-so-useful things. Now,
- it is divided based on functionality, and the items which
+ - The contrib directory has been sorted and tidied. Before, it was
+ an unsorted dumping ground for useful and not-so-useful things.
+ Now, it is divided based on functionality, and the items which
seemed to be nonfunctional or useless have been removed. Resolves
ticket 8966; based on patches from "rl1987".