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coalesce common sections, sort sections a bit, add more notes
This commit is contained in:
Nick Mathewson
parent
ece3e77066
commit
b70f303207
184
ReleaseNotes
184
ReleaseNotes
@ -7,6 +7,10 @@ Changes in version 0.3.2.9 - 2018-01-09
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BLURB GOES HERE
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[LINK TO ONION SERVICES POST.]
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[LINK TO KIST POST.]
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Per our stable release policy, we plan to support each stable release
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series for at least the next nine months, or for three months after
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the first stable release of the next series: whichever is longer. If
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@ -21,26 +25,12 @@ Changes in version 0.3.2.9 - 2018-01-09
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Closes ticket 23910.
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- The directory authority "Longclaw" has changed its IP address.
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Closes ticket 23592.
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o Major feature (scheduler, channel):
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- Tor now uses new schedulers to decide which circuits should
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deliver cells first, in order to improve congestion at relays. The
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first type is called "KIST" ("Kernel Informed Socket Transport"),
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and is only available on Linux-like systems: it uses feedback from
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the kernel to prevent the kernel's TCP buffers from growing too
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full. The second new scheduler type is called "KISTLite": it
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behaves the same as KIST, but runs on systems without kernel
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support for inspecting TCP implementation details. The old
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scheduler is still available, under the name "Vanilla". To change
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the default scheduler preference order, use the new "Schedulers"
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option. (The default preference order is "KIST,KISTLite,Vanilla".)
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Matt Traudt implemented KIST, based on research by Rob Jansen,
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John Geddes, Christ Wacek, Micah Sherr, and Paul Syverson. For
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more information, see the design paper at
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http://www.robgjansen.com/publications/kist-sec2014.pdf and the
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followup implementation paper at https://arxiv.org/abs/1709.01044.
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Closes ticket 12541.
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- Remove longclaw's IPv6 address, as it will soon change. Authority
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IPv6 addresses were originally added in 0.2.8.1-alpha. This leaves
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3/8 directory authorities with IPv6 addresses, but there are also
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52 fallback directory mirrors with IPv6 addresses. Resolves 19760.
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- Add an IPv6 address for the "bastet" directory authority. Closes
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ticket 24394.
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o Major features (next-generation onion services):
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- Tor now supports the next-generation onion services protocol for
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@ -81,10 +71,29 @@ Changes in version 0.3.2.9 - 2018-01-09
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tested and hardened. Service operators who want to experiment with
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the new system can use the 'HiddenServiceVersion 3' torrc
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directive along with the regular onion service configuration
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options. We will publish a blog post about this new feature
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soon! Enjoy!
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options. Enjoy!
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o Major bugfixes (security):
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o Major feature (scheduler, channel):
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- Tor now uses new schedulers to decide which circuits should
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deliver cells first, in order to improve congestion at relays. The
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first type is called "KIST" ("Kernel Informed Socket Transport"),
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and is only available on Linux-like systems: it uses feedback from
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the kernel to prevent the kernel's TCP buffers from growing too
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full. The second new scheduler type is called "KISTLite": it
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behaves the same as KIST, but runs on systems without kernel
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support for inspecting TCP implementation details. The old
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scheduler is still available, under the name "Vanilla". To change
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the default scheduler preference order, use the new "Schedulers"
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option. (The default preference order is "KIST,KISTLite,Vanilla".)
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Matt Traudt implemented KIST, based on research by Rob Jansen,
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John Geddes, Christ Wacek, Micah Sherr, and Paul Syverson. For
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more information, see the design paper at
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http://www.robgjansen.com/publications/kist-sec2014.pdf and the
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followup implementation paper at https://arxiv.org/abs/1709.01044.
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Closes ticket 12541.
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o Major bugfixes (security, general):
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- Fix a denial of service bug where an attacker could use a
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malformed directory object to cause a Tor instance to pause while
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OpenSSL would try to read a passphrase from the terminal. (Tor
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@ -92,10 +101,18 @@ Changes in version 0.3.2.9 - 2018-01-09
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packages, are not impacted.) Fixes bug 24246; bugfix on every
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version of Tor. Also tracked as TROVE-2017-011 and CVE-2017-8821.
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Found by OSS-Fuzz as testcase 6360145429790720.
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o Major bugfixes (security, directory authority):
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- Fix a denial of service issue where an attacker could crash a
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directory authority using a malformed router descriptor. Fixes bug
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24245; bugfix on 0.2.9.4-alpha. Also tracked as TROVE-2017-010
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and CVE-2017-8820.
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o Major bugfixes (security, onion service v2):
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- Fix a use-after-free error that could crash v2 Tor onion services
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when they failed to open circuits while expiring introduction
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points. Fixes bug 24313; bugfix on 0.2.7.2-alpha. This issue is
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also tracked as TROVE-2017-013 and CVE-2017-8823.
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- When checking for replays in the INTRODUCE1 cell data for a
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(legacy) onion service, correctly detect replays in the RSA-
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encrypted part of the cell. We were previously checking for
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@ -105,12 +122,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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0.2.4.1-alpha. This issue is also tracked as TROVE-2017-009
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and CVE-2017-8819.
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o Major bugfixes (security, onion service v2):
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- Fix a use-after-free error that could crash v2 Tor onion services
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when they failed to open circuits while expiring introduction
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points. Fixes bug 24313; bugfix on 0.2.7.2-alpha. This issue is
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also tracked as TROVE-2017-013 and CVE-2017-8823.
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o Major bugfixes (security, relay):
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- When running as a relay, make sure that we never build a path
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through ourselves, even in the case where we have somehow lost the
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@ -160,11 +171,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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controllers can more easily alert users when their clocks are
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wrong. Fixes bug 23506; bugfix on 0.1.2.6-alpha.
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o Minor feature (relay statistics):
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- Change relay bandwidth reporting stats interval from 4 hours to 24
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hours in order to reduce the efficiency of guard discovery
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attacks. Fixes ticket 23856.
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o Minor features (bridge):
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- Bridge relays can now set the BridgeDistribution config option to
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add a "bridge-distribution-request" line to their bridge
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@ -173,6 +179,10 @@ Changes in version 0.3.2.9 - 2018-01-09
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not yet implement this feature.) As a side benefit, this feature
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provides a way to distinguish bridge descriptors from non-bridge
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descriptors. Implements tickets 18329.
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- When handling the USERADDR command on an ExtOrPort, warn when the
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transports provides a USERADDR with no port. In a future version,
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USERADDR commands of this format may be rejected. Detects problems
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related to ticket 23080.
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o Minor features (bug detection):
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- Log a warning message with a stack trace for any attempt to call
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@ -200,8 +210,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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Previously, we split at 4, not 32, which led to significant
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overhead in HTTP request size and degradation in compression
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performance. Closes ticket 23220.
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o Minor features (client, entry guards):
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- Improve log messages when missing descriptors for primary guards.
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Resolves ticket 23670.
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@ -235,15 +243,7 @@ Changes in version 0.3.2.9 - 2018-01-09
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https://gitweb.torproject.org/user/nickm/calltool.git and run
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"make callgraph". Closes ticket 19307.
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o Minor features (directory authorities):
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- Remove longclaw's IPv6 address, as it will soon change. Authority
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IPv6 addresses were originally added in 0.2.8.1-alpha. This leaves
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3/8 directory authorities with IPv6 addresses, but there are also
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52 fallback directory mirrors with IPv6 addresses. Resolves 19760.
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o Minor features (directory authority):
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- Add an IPv6 address for the "bastet" directory authority. Closes
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ticket 24394.
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- Make the "Exit" flag assignment only depend on whether the exit
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policy allows connections to ports 80 and 443. Previously relays
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would get the Exit flag if they allowed connections to one of
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@ -271,12 +271,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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o Minor features (geoip):
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- Update geoip and geoip6 to the January 5 2018 Maxmind GeoLite2
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Country database.
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- Update geoip and geoip6 to the December 6 2017 Maxmind GeoLite2
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Country database.
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- Update geoip and geoip6 to the November 6 2017 Maxmind GeoLite2
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Country database.
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- Update geoip and geoip6 to the October 4 2017 Maxmind GeoLite2
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Country database.
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o Minor features (hidden service, circuit, logging):
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- Improve logging of many callsite in the circuit subsystem to print
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@ -316,11 +310,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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- If the sandbox filter fails to load, suggest to the user that
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their kernel might not support seccomp2. Closes ticket 23090.
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o Minor features (logging, scheduler):
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- Introduce a SCHED_BUG() function to log extra information about
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the scheduler state if we ever catch a bug in the scheduler.
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Closes ticket 23753.
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o Minor features (portability):
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- Tor now compiles correctly on arm64 with libseccomp-dev installed.
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(It doesn't yet work with the sandbox enabled.) Closes
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@ -335,14 +324,17 @@ Changes in version 0.3.2.9 - 2018-01-09
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circuits from clients even if those clients used regular CREATE
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cells to make them; and do not consider circuits from relays even
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if they were made with CREATE_FAST. Part of ticket 22805.
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o Minor features (relay, configuration):
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- Reject attempts to use relative file paths when RunAsDaemon is
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set. Previously, Tor would accept these, but the directory-
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changing step of RunAsDaemon would give strange and/or confusing
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results. Closes ticket 22731.
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o Minor features (removed deprecations):
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o Minor features (relay statistics):
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- Change relay bandwidth reporting stats interval from 4 hours to 24
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hours in order to reduce the efficiency of guard discovery
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attacks. Fixes ticket 23856.
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o Minor features (reverted deprecations):
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- The ClientDNSRejectInternalAddresses flag can once again be set in
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non-testing Tor networks, so long as they do not use the default
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directory authorities. This change also removes the deprecation of
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@ -352,12 +344,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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- Change several fatal assertions when flushing buffers into non-
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fatal assertions, to prevent any recurrence of 23690.
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o Minor features (spec conformance, bridge, diagnostic):
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- When handling the USERADDR command on an ExtOrPort, warn when the
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transports provides a USERADDR with no port. In a future version,
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USERADDR commands of this format may be rejected. Detects problems
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related to ticket 23080.
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o Minor features (startup, safety):
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- When configured to write a PID file, Tor now exits if it is unable
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to do so. Previously, it would warn and continue. Closes
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@ -420,6 +406,14 @@ Changes in version 0.3.2.9 - 2018-01-09
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Additionally, look in /usr/local/opt/openssl, if it's present.
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These changes together repair the default build on OSX systems
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with Homebrew installed. Fixes bug 23602; bugfix on 0.2.7.2-alpha.
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- Fix a signed/unsigned comparison warning introduced by our fix to
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TROVE-2017-009. Fixes bug 24480; bugfix on 0.2.5.16.
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- Fix a memory leak warning in one of the libevent-related
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configuration tests that could occur when manually specifying
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-fsanitize=address. Fixes bug 24279; bugfix on 0.3.0.2-alpha.
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Found and patched by Alex Xu.
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- Fix unused-variable warnings in donna's Curve25519 SSE2 code.
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Fixes bug 22895; bugfix on 0.2.7.2-alpha.
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o Minor bugfixes (certificate handling):
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- Fix a time handling bug in Tor certificates set to expire after
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@ -448,16 +442,13 @@ Changes in version 0.3.2.9 - 2018-01-09
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- For defense-in-depth, make the controller's write_escaped_data()
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function robust to extremely long inputs. Fixes bug 19281; bugfix
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on 0.1.1.1-alpha. Reported by Guido Vranken.
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o Minor bugfixes (compilation):
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- Fix a signed/unsigned comparison warning introduced by our fix to
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TROVE-2017-009. Fixes bug 24480; bugfix on 0.2.5.16.
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- Fix a memory leak warning in one of the libevent-related
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configuration tests that could occur when manually specifying
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-fsanitize=address. Fixes bug 24279; bugfix on 0.3.0.2-alpha.
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Found and patched by Alex Xu.
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- Fix unused-variable warnings in donna's Curve25519 SSE2 code.
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Fixes bug 22895; bugfix on 0.2.7.2-alpha.
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- Fix several places in our codebase where a C compiler would be
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likely to eliminate a check, based on assuming that undefined
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behavior had not happened elsewhere in the code. These cases are
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usually a sign of redundant checking or dubious arithmetic. Found
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by Georg Koppen using the "STACK" tool from Wang, Zeldovich,
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Kaashoek, and Solar-Lezama. Fixes bug 24423; bugfix on various
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Tor versions.
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o Minor bugfixes (compression):
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- Handle a pathological case when decompressing Zstandard data when
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@ -479,15 +470,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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HS_DESC event when a service is not able to upload a descriptor.
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Fixes bug 24230; bugfix on 0.2.7.1-alpha.
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o Minor bugfixes (correctness):
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- Fix several places in our codebase where a C compiler would be
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likely to eliminate a check, based on assuming that undefined
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behavior had not happened elsewhere in the code. These cases are
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usually a sign of redundant checking or dubious arithmetic. Found
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by Georg Koppen using the "STACK" tool from Wang, Zeldovich,
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Kaashoek, and Solar-Lezama. Fixes bug 24423; bugfix on various
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Tor versions.
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o Minor bugfixes (directory cache):
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- Recover better from empty or corrupt files in the consensus cache
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directory. Fixes bug 24099; bugfix on 0.3.1.1-alpha.
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@ -549,25 +531,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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minimum heartbeat interval number of seconds in the future. Fixes
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bug 19476; bugfix on 0.2.3.1-alpha.
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o Minor bugfixes (hidden service client):
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- When handling multiple SOCKS request for the same .onion address,
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only fetch the service descriptor once.
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o Minor bugfixes (hidden service, relay):
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- Avoid a possible double close of a circuit by the intro point on
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error of sending the INTRO_ESTABLISHED cell. Fixes bug 23610;
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bugfix on 0.3.0.1-alpha.
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o Minor bugfixes (hidden service, v2):
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- When reloading configured hidden services, copy all information
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from the old service object. Previously, some data was omitted,
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causing delays in descriptor upload, and other bugs. Fixes bug
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23790; bugfix on 0.2.1.9-alpha.
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o Minor bugfixes (linux seccomp2 sandbox, logging):
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- Fix some messages on unexpected errors from the seccomp2 library.
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Fixes bug 22750; bugfix on 0.2.5.1-alpha. Patch from "cypherpunks".
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o Minor bugfixes (logging):
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- Suppress a log notice when relay descriptors arrive. We already
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have a bootstrap progress for this so no need to log notice
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@ -587,6 +550,8 @@ Changes in version 0.3.2.9 - 2018-01-09
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actual name of the user owning the directory. Previously, we'd log
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the name of the process owner twice. Fixes bug 23487; bugfix
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on 0.2.9.1-alpha.
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- Fix some messages on unexpected errors from the seccomp2 library.
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Fixes bug 22750; bugfix on 0.2.5.1-alpha. Patch from "cypherpunks".
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- The tor specification says hop counts are 1-based, so fix two log
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messages that mistakenly logged 0-based hop counts. Fixes bug
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18982; bugfix on 0.2.6.2-alpha and 0.2.4.5-alpha. Patch by teor.
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@ -625,6 +590,15 @@ Changes in version 0.3.2.9 - 2018-01-09
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- Rename the consensus parameter "hsdir-interval" to "hsdir_interval"
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so it matches dir-spec.txt. Fixes bug 24262; bugfix
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on 0.3.1.1-alpha.
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- When handling multiple SOCKS request for the same .onion address,
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only fetch the service descriptor once.
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- Avoid a possible double close of a circuit by the intro point on
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error of sending the INTRO_ESTABLISHED cell. Fixes bug 23610;
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bugfix on 0.3.0.1-alpha.
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- When reloading configured hidden services, copy all information
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from the old service object. Previously, some data was omitted,
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causing delays in descriptor upload, and other bugs. Fixes bug
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23790; bugfix on 0.2.1.9-alpha.
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o Minor bugfixes (path selection):
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- When selecting relays by bandwidth, avoid a rounding error that
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@ -642,8 +616,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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o Minor bugfixes (portability):
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- Stop using the PATH_MAX variable, which is not defined on GNU
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Hurd. Fixes bug 23098; bugfix on 0.3.1.1-alpha.
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o Minor bugfixes (portability, msvc):
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- Fix a bug in the bit-counting parts of our timing-wheel code on
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MSVC. (Note that MSVC is still not a supported build platform, due
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to cyptographic timing channel risks.) Fixes bug 24633; bugfix
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@ -657,8 +629,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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relays, to prevent spurious address resolutions and descriptor
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rebuilds. This is a mitigation for bug 21789. Fixes bug 23470;
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bugfix on in 0.2.8.1-alpha.
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o Minor bugfixes (relay, crash):
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- Avoid a crash when transitioning from client mode to bridge mode.
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Previously, we would launch the worker threads whenever our
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"public server" mode changed, but not when our "server" mode
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@ -678,8 +648,6 @@ Changes in version 0.3.2.9 - 2018-01-09
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- Fix additional channelpadding unit test failures by using mocked
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time instead of actual time for all tests. Fixes bug 23608; bugfix
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on 0.3.1.1-alpha.
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o Minor bugfixes (tests):
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- Fix a bug in our fuzzing mock replacement for crypto_pk_checksig(),
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to correctly handle cases where a caller gives it an RSA key of
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under 160 bits. (This is not actually a bug in Tor itself, but
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