clean up changelog more, add blurb
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ChangeLog
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ChangeLog
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Changes in version 0.2.1.29 - 2011-01-15
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Tor 0.2.1.29 continues our recent code security audit work. The main
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fix resolves a remote heap overflow vulnerability that can allow remote
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code execution (CVE-2011-0427). Other fixes address a variety of assert
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and crash bugs, most of which we think are hard to exploit remotely.
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o Major bugfixes (security):
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- Fix a heap overflow bug where an adversary could cause heap
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corruption. This bug potentially allows remote code execution
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corruption. This bug probably allows remote code execution
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attacks. Reported by "debuger". Fixes CVE-2011-0427. Bugfix on
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0.1.2.10-rc.
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- Prevent a denial-of-service attack by disallowing any
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zlib-compressed data whose compression factor is implausibly
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high. Fixes the second part of bug 2324; reported by "doors".
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high. Fixes part of bug 2324; reported by "doors".
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- Zero out a few more keys in memory before freeing them. Fixes bug
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2384 and part of bug 2385. These key instances found by
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"cypherpunks". Bugfix on 0.0.2pre9.
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o Minor bugfixes:
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- Prevent calls from Libevent from inside Libevent log handlers.
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o Major bugfixes (crashes):
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- Prevent calls to Libevent from inside Libevent log handlers.
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This had potential to cause a nasty set of crashes, especially
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if running Libevent with debug logging enabled, and running
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Tor with a controller watching for low-severity log messages.
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Bugfix on 0.1.0.2-rc. Fixes bug 2190.
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- Fix compilation on mingw when a pthreads compatibility library
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has been installed. (We don't want to use it, so we shouldn't
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be including pthread.h.) Fixes bug 2313; bugfix on 0.1.0.1-rc.
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- Add a check for SIZE_T_MAX to tor_realloc() to try to avoid
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underflow errors there too. Fixes bug 2324.
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underflow errors there too. Fixes the other part of bug 2324.
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- Fix a bug where we would assert if we ever had a
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cached-descriptors.new file (or another file read directly into
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memory) of exactly SIZE_T_CEILING bytes. Found by doors; fixes
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bug 2326; bugfix on 0.2.1.25.
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- Fix some potential asserts and parsing issues with grossly
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malformed router caches. Fixes bug 2352. Found by doorss. Bugfix
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on Tor 0.2.1.27.
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o Minor bugfixes (other):
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- Fix a bug with handling misformed replies to reverse DNS lookup
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requests in DNSPort. Bugfix on Tor 0.2.0.1-alpha. Related to a
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bug reported by doorss.
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- Fix compilation on mingw when a pthreads compatibility library
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has been installed. (We don't want to use it, so we shouldn't
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be including pthread.h.) Fixes bug 2313; bugfix on 0.1.0.1-rc.
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- Fix a bug where we would declare that we had run out of virtual
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addresses when the address space was only half-exhausted. Bugfix
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on 0.1.2.1-alpha.
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@ -31,15 +47,6 @@ Changes in version 0.2.1.29 - 2011-01-15
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0.1.2.1-alpha. Bug found by doorss.
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- Correctly handle wrapping around to when we run out of virtual
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address space. Found by cypherpunks, bugfix on 0.2.0.5-alpha.
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- Fix a bug with handling misformed replies to reverse DNS lookup
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requests in DNSPort. Bugfix on Tor 0.2.0.1-alpha. Related to a
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bug reported by doorss.
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- Fix some potential asserts and partsing issues with grossly
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malformed router caches. Fixes bug 2352. Found by doorss. Bugfix
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on Tor 0.2.1.27.
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- Zero out a few more keys in memory before freeing them. Fixes bug
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2384 and part of bug 2385. These key instances found by
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"cypherpunks". Bugfix on 0.0.2pre9.
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o Minor features:
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- Update to the January 1 2011 Maxmind GeoLite Country database.
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