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This commit is contained in:
Roger Dingledine 2012-09-15 16:38:47 -04:00
parent 523b0ec288
commit 2e342df7cd
12 changed files with 57 additions and 64 deletions
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57
ChangeLog
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Changes in version 0.2.4.3-alpha - 2012-09-??
o Security fixes:
- Fix an assertion failure in tor_timegm() that could be triggered
by a badly formatted directory object. Bug found by fuzzing with
Radamsa. Fixes bug 6811; bugfix on 0.2.0.20-rc.
o Major bugfixes:
- Fix a possible crash bug when checking for deactivated circuits
in connection_or_flush_from_first_active_circuit(). Fixes bug 6341;
bugfix on 0.2.2.7-alpha. Bug report and fix received pseudonymously.
- Allow routers to detect that their own DirPorts are running. When
we removed support for versions_supports_begindir, we also
accidentally removed the mechanism we used to self-test our
DirPort. Diagnosed with help from kargig. Fixes bugs 6814 and 6815;
bugfix on 0.2.4.2-alpha.
o Security features:
- Switch to a completely time-invariant approach for picking nodes
weighted by bandwidth. Our old approach would run through the
part of the loop after it had made its choice slightly slower
than it ran through the part of the loop before it had made its
choice. Addresses ticket 6538.
o Minor bugfixes:
- Correct file sizes when reading binary files on Cygwin, to avoid
a bug where Tor would fail to read its state file. Fixes bug 6844;
bugfix on 0.1.2.7-alpha.
- Fix round_to_power_of_2() so it doesn't invoke undefined behavior
with large values. This situation was untriggered, but nevertheless
incorrect. Fixes bug 6831; bugfix on 0.2.0.1-alpha.
- Reject consensus votes with more than 64 known-flags. We aren't even
close to that limit yet, and our code doesn't handle it correctly.
Fixes bug 6833; bugfix on 0.2.0.1-alpha.
- Avoid undefined behaviour when parsing the list of supported
rendezvous/introduction protocols in a hidden service descriptor.
Previously, Tor would have confused (as-yet-unused) protocol version
numbers greater than 32 with lower ones on many platforms. Fixes
bug 6827; bugfix on 0.2.0.10-alpha. Found by George Kadianakis.
- Fix building with older versions of GCC that don't like preprocessor
directives inside macro arguments. Found by grarpamp. Fixes bug
6842; bugfix on 0.2.4.2-alpha.
- Switch weighted node selection rule from using a list of doubles
to using a list of int64_t. This change should make the process
slightly easier to debug and maintain. Needed to finish ticket 6538.
o Code simplification and refactoring:
- Move the generic "config" code into a new file, and have "config.c"
hold only torrc- and state-related code. Resolves ticket 6823.
- Move the core of our "choose a weighted element at random" logic
into its own function, and give it unit tests. Now the logic is
testable, and a little less fragile too.
o Documentation fixes:
- Resolve a typo in torrc.sample.in. Fixes bug 6819; bugfix on
0.2.3.14-alpha.
Changes in version 0.2.3.22-rc - 2012-09-11
Tor 0.2.3.22-rc fixes another opportunity for a remotely triggerable
assertion.

5
changes/bug6341
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o Major bugfixes:
- Fix a possible crash bug when checking for deactivated circuits
in connection_or_flush_from_first_active_circuit(). Fixes bug
6341; bugfix on 0.2.2.7-alpha. Bug report and fix received
pseudonymously.

16
changes/bug6538
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o Minor bugfixes:
- Switch weighted node selection rule from using a list of doubles
to using a list of int64_t. This should make the process slightly
easier to debug and maintain. Needed for fix for bug 6538.
o Security features:
- Switch to a completely time-invariant approach for picking nodes
weighted by bandwidth. Our old approach would run through the
part of the loop after it had made its choice slightly slower
than it ran through the part of the loop before it had made its
choice. Fix for bug 6538.
o Code simplifications and refactoring:
- Move the core of our "choose a weighted element at random" logic
into its own function, and give it unit tests. Now the logic is
testable, and a little less fragile too.

5
changes/bug6811
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@ -1,5 +0,0 @@
o Major security fixes:
- Fix an assertion failure in tor_timegm that could be triggered
by a badly formatted directory object. Bug found by fuzzing with
Radamsa. Fixes bug 6811; bugfix on 0.2.0.20-rc.

6
changes/bug6815
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@ -1,6 +0,0 @@
o Major bugfixes:
- Allow routers to correctly detect their own DirPorts as running.
When we removed support for versions_supports_begindir, we also
accidentally removed the mechanism we used to self-test our
DirPort. Diagnosed with help from kargig. Fixes bugs 6814 and
6815; bugfix on 0.2.4.2-alpha.

3
changes/bug6819
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o Documentation fixes:
- Resolve a typo in torrc.sample.in. Fixes bug 6819; bugfix on
0.2.3.14-alpha.

9
changes/bug6827
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o Minor bugfixes:
- Avoid undefined behaviour when parsing the list of supported
rendezvous/introduction protocols in a hidden service
descriptor. Previously, Tor would have confused (as-yet-unused)
protocol version numbers greater than 32 with lower ones on many
platforms. Fixes bug 6827; bugfix on 0.2.0.10-alpha; found by
George Kadianakis.

4
changes/bug6831
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@ -1,4 +0,0 @@
o Minor bugfixes:
- Fix round_to_power_of_2 so it doesn't invoke undefined behavior
with large values. This was untriggered, but nevertheless incorrect.
Fixes bug 6831; bugfix on 0.2.0.1-alpha.

4
changes/bug6833
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o Minor bugfixes (directory authority):
- Reject consensus votes with more than 64 known-flags. We aren't even
close to that limit yet, and our code doesn't handle it
correctly. Fixes bug 6833; bugfix on 0.2.0.1-alpha.

4
changes/bug6844
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o Minor bugfixes:
- Correct file sizes when reading binary files on
Cygwin, to avoid a bug where Tor would fail to read its state file.
Fixes bug 6844; bugfix on 0.1.2.7-alpha.

5
changes/old_gcc_macro_fix
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@ -1,5 +0,0 @@
o Minor bugfixes:
- Fix building with older versions of GCC that don't like preprocessor
directives inside macro arguments. Found by grarpamp. Fixes bug 6842;
bugfix on 0.2.4.2-alpha.

3
changes/refactor_config
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o Code simplification and refactoring:
- Move the generic "config" code into a new file, and have "config.c"
hold only torrc- and state-related code.