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Commit c04209c3 authored by Nick Mathewson's avatar Nick Mathewson :game_die:
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Forward-port changelogs and releaesenotes to master. 

These are from today's stable releases in 0.2.4 through 0.2.8
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Changes in version 0.3.1.1-alpha - 2017-??-??
 
 
Changes in version 0.2.8.13 - 2017-03-03
Tor 0.2.8.13 backports a security fix from later Tor
releases. Anybody running Tor 0.2.8.12 or earlier should upgrade to this
this release, if for some reason they cannot upgrade to a later
release series, and if they build Tor with the --enable-expensive-hardening
option.
Note that support for Tor 0.2.8.x is ending next year: we will not issue
any fixes for the Tor 0.2.8.x series after 1 Jan 2018. If you need
a Tor release series with longer-term support, we recommend Tor 0.2.9.x.
o Major bugfixes (parsing, backported from 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
Changes in version 0.2.7.7 - 2017-03-03
Tor 0.2.7.7 backports a number of security fixes from later Tor
releases. Anybody running Tor 0.2.7.6 or earlier should upgrade to
this release, if for some reason they cannot upgrade to a later
release series.
Note that support for Tor 0.2.7.x is ending this year: we will not issue
any fixes for the Tor 0.2.7.x series after 1 August 2017. If you need
a Tor release series with longer-term support, we recommend Tor 0.2.9.x.
o Directory authority changes (backport from 0.2.8.5-rc):
- Urras is no longer a directory authority. Closes ticket 19271.
o Directory authority changes (backport from 0.2.9.2-alpha):
- The "Tonga" bridge authority has been retired; the new bridge
authority is "Bifroest". Closes tickets 19728 and 19690.
o Directory authority key updates (backport from 0.2.8.1-alpha):
- Update the V3 identity key for the dannenberg directory authority:
it was changed on 18 November 2015. Closes task 17906. Patch
by "teor".
o Major bugfixes (parsing, security, backport from 0.2.9.8):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Major bugfixes (security, client, DNS proxy, backport from 0.2.8.3-alpha):
- Stop a crash that could occur when a client running with DNSPort
received a query with multiple address types, and the first
address type was not supported. Found and fixed by Scott Dial.
Fixes bug 18710; bugfix on 0.2.5.4-alpha.
- Prevent a class of security bugs caused by treating the contents
of a buffer chunk as if they were a NUL-terminated string. At
least one such bug seems to be present in all currently used
versions of Tor, and would allow an attacker to remotely crash
most Tor instances, especially those compiled with extra compiler
hardening. With this defense in place, such bugs can't crash Tor,
though we should still fix them as they occur. Closes ticket
20384 (TROVE-2016-10-001).
o Major bugfixes (security, pointers, backport from 0.2.8.2-alpha):
- Avoid a difficult-to-trigger heap corruption attack when extending
a smartlist to contain over 16GB of pointers. Fixes bug 18162;
bugfix on 0.1.1.11-alpha, which fixed a related bug incompletely.
Reported by Guido Vranken.
o Major bugfixes (dns proxy mode, crash, backport from 0.2.8.2-alpha):
- Avoid crashing when running as a DNS proxy. Fixes bug 16248;
bugfix on 0.2.0.1-alpha. Patch from "cypherpunks".
o Major bugfixes (key management, backport from 0.2.8.3-alpha):
- If OpenSSL fails to generate an RSA key, do not retain a dangling
pointer to the previous (uninitialized) key value. The impact here
should be limited to a difficult-to-trigger crash, if OpenSSL is
running an engine that makes key generation failures possible, or
if OpenSSL runs out of memory. Fixes bug 19152; bugfix on
0.2.1.10-alpha. Found by Yuan Jochen Kang, Suman Jana, and
Baishakhi Ray.
o Major bugfixes (parsing, backported from 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (security, memory erasure, backport from 0.2.8.1-alpha):
- Make memwipe() do nothing when passed a NULL pointer or buffer of
zero size. Check size argument to memwipe() for underflow. Fixes
bug 18089; bugfix on 0.2.3.25 and 0.2.4.6-alpha. Reported by "gk",
patch by "teor".
o Minor features (bug-resistance, backport from 0.2.8.2-alpha):
- Make Tor survive errors involving connections without a
corresponding event object. Previously we'd fail with an
assertion; now we produce a log message. Related to bug 16248.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
Changes in version 0.2.6.11 - 2017-03-03
Tor 0.2.6.11 backports a number of security fixes from later Tor
releases. Anybody running Tor 0.2.6.10 or earlier should upgrade to
this release, if for some reason they cannot upgrade to a later
release series.
Note that support for Tor 0.2.6.x is ending this year: we will not issue
any fixes for the Tor 0.2.6.x series after 1 August 2017. If you need
a Tor release series with longer-term support, we recommend Tor 0.2.9.x.
o Directory authority changes (backport from 0.2.8.5-rc):
- Urras is no longer a directory authority. Closes ticket 19271.
o Directory authority changes (backport from 0.2.9.2-alpha):
- The "Tonga" bridge authority has been retired; the new bridge
authority is "Bifroest". Closes tickets 19728 and 19690.
o Directory authority key updates (backport from 0.2.8.1-alpha):
- Update the V3 identity key for the dannenberg directory authority:
it was changed on 18 November 2015. Closes task 17906. Patch
by "teor".
o Major features (security fixes, backport from 0.2.9.4-alpha):
- Prevent a class of security bugs caused by treating the contents
of a buffer chunk as if they were a NUL-terminated string. At
least one such bug seems to be present in all currently used
versions of Tor, and would allow an attacker to remotely crash
most Tor instances, especially those compiled with extra compiler
hardening. With this defense in place, such bugs can't crash Tor,
though we should still fix them as they occur. Closes ticket
20384 (TROVE-2016-10-001).
o Major bugfixes (parsing, security, backport from 0.2.9.8):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Major bugfixes (security, client, DNS proxy, backport from 0.2.8.3-alpha):
- Stop a crash that could occur when a client running with DNSPort
received a query with multiple address types, and the first
address type was not supported. Found and fixed by Scott Dial.
Fixes bug 18710; bugfix on 0.2.5.4-alpha.
o Major bugfixes (security, correctness, backport from 0.2.7.4-rc):
- Fix an error that could cause us to read 4 bytes before the
beginning of an openssl string. This bug could be used to cause
Tor to crash on systems with unusual malloc implementations, or
systems with unusual hardening installed. Fixes bug 17404; bugfix
on 0.2.3.6-alpha.
o Major bugfixes (security, pointers, backport from 0.2.8.2-alpha):
- Avoid a difficult-to-trigger heap corruption attack when extending
a smartlist to contain over 16GB of pointers. Fixes bug 18162;
bugfix on 0.1.1.11-alpha, which fixed a related bug incompletely.
Reported by Guido Vranken.
o Major bugfixes (dns proxy mode, crash, backport from 0.2.8.2-alpha):
- Avoid crashing when running as a DNS proxy. Fixes bug 16248;
bugfix on 0.2.0.1-alpha. Patch from "cypherpunks".
o Major bugfixes (guard selection, backport from 0.2.7.6):
- Actually look at the Guard flag when selecting a new directory
guard. When we implemented the directory guard design, we
accidentally started treating all relays as if they have the Guard
flag during guard selection, leading to weaker anonymity and worse
performance. Fixes bug 17772; bugfix on 0.2.4.8-alpha. Discovered
by Mohsen Imani.
o Major bugfixes (key management, backport from 0.2.8.3-alpha):
- If OpenSSL fails to generate an RSA key, do not retain a dangling
pointer to the previous (uninitialized) key value. The impact here
should be limited to a difficult-to-trigger crash, if OpenSSL is
running an engine that makes key generation failures possible, or
if OpenSSL runs out of memory. Fixes bug 19152; bugfix on
0.2.1.10-alpha. Found by Yuan Jochen Kang, Suman Jana, and
Baishakhi Ray.
o Major bugfixes (parsing, backported from 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (security, memory erasure, backport from 0.2.8.1-alpha):
- Make memwipe() do nothing when passed a NULL pointer or buffer of
zero size. Check size argument to memwipe() for underflow. Fixes
bug 18089; bugfix on 0.2.3.25 and 0.2.4.6-alpha. Reported by "gk",
patch by "teor".
o Minor features (bug-resistance, backport from 0.2.8.2-alpha):
- Make Tor survive errors involving connections without a
corresponding event object. Previously we'd fail with an
assertion; now we produce a log message. Related to bug 16248.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
o Minor bugfixes (compilation, backport from 0.2.7.6):
- Fix a compilation warning with Clang 3.6: Do not check the
presence of an address which can never be NULL. Fixes bug 17781.
Changes in version 0.2.5.13 - 2017-03-03
Tor 0.2.5.13 backports a number of security fixes from later Tor
releases. Anybody running Tor 0.2.5.13 or earlier should upgrade to
this release, if for some reason they cannot upgrade to a later
release series.
Note that support for Tor 0.2.5.x is ending next year: we will not issue
any fixes for the Tor 0.2.5.x series after 1 May 2018. If you need
a Tor release series with longer-term support, we recommend Tor 0.2.9.x.
o Directory authority changes (backport from 0.2.8.5-rc):
- Urras is no longer a directory authority. Closes ticket 19271.
o Directory authority changes (backport from 0.2.9.2-alpha):
- The "Tonga" bridge authority has been retired; the new bridge
authority is "Bifroest". Closes tickets 19728 and 19690.
o Directory authority key updates (backport from 0.2.8.1-alpha):
- Update the V3 identity key for the dannenberg directory authority:
it was changed on 18 November 2015. Closes task 17906. Patch
by "teor".
o Major features (security fixes, backport from 0.2.9.4-alpha):
- Prevent a class of security bugs caused by treating the contents
of a buffer chunk as if they were a NUL-terminated string. At
least one such bug seems to be present in all currently used
versions of Tor, and would allow an attacker to remotely crash
most Tor instances, especially those compiled with extra compiler
hardening. With this defense in place, such bugs can't crash Tor,
though we should still fix them as they occur. Closes ticket
20384 (TROVE-2016-10-001).
o Major bugfixes (parsing, security, backport from 0.2.9.8):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Major bugfixes (security, client, DNS proxy, backport from 0.2.8.3-alpha):
- Stop a crash that could occur when a client running with DNSPort
received a query with multiple address types, and the first
address type was not supported. Found and fixed by Scott Dial.
Fixes bug 18710; bugfix on 0.2.5.4-alpha.
o Major bugfixes (security, correctness, backport from 0.2.7.4-rc):
- Fix an error that could cause us to read 4 bytes before the
beginning of an openssl string. This bug could be used to cause
Tor to crash on systems with unusual malloc implementations, or
systems with unusual hardening installed. Fixes bug 17404; bugfix
on 0.2.3.6-alpha.
o Major bugfixes (security, pointers, backport from 0.2.8.2-alpha):
- Avoid a difficult-to-trigger heap corruption attack when extending
a smartlist to contain over 16GB of pointers. Fixes bug 18162;
bugfix on 0.1.1.11-alpha, which fixed a related bug incompletely.
Reported by Guido Vranken.
o Major bugfixes (dns proxy mode, crash, backport from 0.2.8.2-alpha):
- Avoid crashing when running as a DNS proxy. Fixes bug 16248;
bugfix on 0.2.0.1-alpha. Patch from "cypherpunks".
o Major bugfixes (guard selection, backport from 0.2.7.6):
- Actually look at the Guard flag when selecting a new directory
guard. When we implemented the directory guard design, we
accidentally started treating all relays as if they have the Guard
flag during guard selection, leading to weaker anonymity and worse
performance. Fixes bug 17772; bugfix on 0.2.4.8-alpha. Discovered
by Mohsen Imani.
o Major bugfixes (key management, backport from 0.2.8.3-alpha):
- If OpenSSL fails to generate an RSA key, do not retain a dangling
pointer to the previous (uninitialized) key value. The impact here
should be limited to a difficult-to-trigger crash, if OpenSSL is
running an engine that makes key generation failures possible, or
if OpenSSL runs out of memory. Fixes bug 19152; bugfix on
0.2.1.10-alpha. Found by Yuan Jochen Kang, Suman Jana, and
Baishakhi Ray.
o Major bugfixes (parsing, backported from 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (security, memory erasure, backport from 0.2.8.1-alpha):
- Make memwipe() do nothing when passed a NULL pointer or buffer of
zero size. Check size argument to memwipe() for underflow. Fixes
bug 18089; bugfix on 0.2.3.25 and 0.2.4.6-alpha. Reported by "gk",
patch by "teor".
o Minor features (bug-resistance, backport from 0.2.8.2-alpha):
- Make Tor survive errors involving connections without a
corresponding event object. Previously we'd fail with an
assertion; now we produce a log message. Related to bug 16248.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
o Minor bugfixes (compilation, backport from 0.2.7.6):
- Fix a compilation warning with Clang 3.6: Do not check the
presence of an address which can never be NULL. Fixes bug 17781.
o Minor bugfixes (crypto error-handling, backport from 0.2.7.2-alpha):
- Check for failures from crypto_early_init, and refuse to continue.
A previous typo meant that we could keep going with an
uninitialized crypto library, and would have OpenSSL initialize
its own PRNG. Fixes bug 16360; bugfix on 0.2.5.2-alpha, introduced
when implementing ticket 4900. Patch by "teor".
o Minor bugfixes (hidden service, backport from 0.2.7.1-alpha):
- Fix an out-of-bounds read when parsing invalid INTRODUCE2 cells on
a client authorized hidden service. Fixes bug 15823; bugfix
on 0.2.1.6-alpha.
Changes in version 0.2.4.28 - 2017-03-03
Tor 0.2.4.28 backports a number of security fixes from later Tor
releases. Anybody running Tor 0.2.4.27 or earlier should upgrade to
this release, if for some reason they cannot upgrade to a later
release series.
Note that support for Tor 0.2.4.x is ending soon: we will not issue
any fixes for the Tor 0.2.4.x series after 1 August 2017. If you need
a Tor release series with long-term support, we recommend Tor 0.2.9.x.
o Directory authority changes (backport from 0.2.8.5-rc):
- Urras is no longer a directory authority. Closes ticket 19271.
o Directory authority changes (backport from 0.2.9.2-alpha):
- The "Tonga" bridge authority has been retired; the new bridge
authority is "Bifroest". Closes tickets 19728 and 19690.
o Directory authority key updates (backport from 0.2.8.1-alpha):
- Update the V3 identity key for the dannenberg directory authority:
it was changed on 18 November 2015. Closes task 17906. Patch
by "teor".
o Major features (security fixes, backport from 0.2.9.4-alpha):
- Prevent a class of security bugs caused by treating the contents
of a buffer chunk as if they were a NUL-terminated string. At
least one such bug seems to be present in all currently used
versions of Tor, and would allow an attacker to remotely crash
most Tor instances, especially those compiled with extra compiler
hardening. With this defense in place, such bugs can't crash Tor,
though we should still fix them as they occur. Closes ticket
20384 (TROVE-2016-10-001).
o Major bugfixes (parsing, security, backport from 0.2.9.8):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be used
to cause hardened clients (built with --enable-expensive-hardening)
to crash if they tried to visit a hostile hidden service. Non-
hardened clients are only affected depending on the details of
their platform's memory allocator. Fixes bug 21018; bugfix on
0.2.0.8-alpha. Found by using libFuzzer. Also tracked as TROVE-
2016-12-002 and as CVE-2016-1254.
o Major bugfixes (security, correctness, backport from 0.2.7.4-rc):
- Fix an error that could cause us to read 4 bytes before the
beginning of an openssl string. This bug could be used to cause
Tor to crash on systems with unusual malloc implementations, or
systems with unusual hardening installed. Fixes bug 17404; bugfix
on 0.2.3.6-alpha.
o Major bugfixes (security, pointers, backport from 0.2.8.2-alpha):
- Avoid a difficult-to-trigger heap corruption attack when extending
a smartlist to contain over 16GB of pointers. Fixes bug 18162;
bugfix on 0.1.1.11-alpha, which fixed a related bug incompletely.
Reported by Guido Vranken.
o Major bugfixes (dns proxy mode, crash, backport from 0.2.8.2-alpha):
- Avoid crashing when running as a DNS proxy. Fixes bug 16248;
bugfix on 0.2.0.1-alpha. Patch from "cypherpunks".
o Major bugfixes (guard selection, backport from 0.2.7.6):
- Actually look at the Guard flag when selecting a new directory
guard. When we implemented the directory guard design, we
accidentally started treating all relays as if they have the Guard
flag during guard selection, leading to weaker anonymity and worse
performance. Fixes bug 17772; bugfix on 0.2.4.8-alpha. Discovered
by Mohsen Imani.
o Major bugfixes (key management, backport from 0.2.8.3-alpha):
- If OpenSSL fails to generate an RSA key, do not retain a dangling
pointer to the previous (uninitialized) key value. The impact here
should be limited to a difficult-to-trigger crash, if OpenSSL is
running an engine that makes key generation failures possible, or
if OpenSSL runs out of memory. Fixes bug 19152; bugfix on
0.2.1.10-alpha. Found by Yuan Jochen Kang, Suman Jana, and
Baishakhi Ray.
o Major bugfixes (parsing, backported from 0.3.0.4-rc):
- Fix an integer underflow bug when comparing malformed Tor
versions. This bug could crash Tor when built with
--enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
0.2.9.8, which were built with -ftrapv by default. In other cases
it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
on 0.0.8pre1. Found by OSS-Fuzz.
o Minor features (security, memory erasure, backport from 0.2.8.1-alpha):
- Make memwipe() do nothing when passed a NULL pointer or buffer of
zero size. Check size argument to memwipe() for underflow. Fixes
bug 18089; bugfix on 0.2.3.25 and 0.2.4.6-alpha. Reported by "gk",
patch by "teor".
o Minor features (bug-resistance, backport from 0.2.8.2-alpha):
- Make Tor survive errors involving connections without a
corresponding event object. Previously we'd fail with an
assertion; now we produce a log message. Related to bug 16248.
o Minor features (DoS-resistance, backport from 0.2.7.1-alpha):
- Make it harder for attackers to overload hidden services with
introductions, by blocking multiple introduction requests on the
same circuit. Resolves ticket 15515.
o Minor features (geoip):
- Update geoip and geoip6 to the February 8 2017 Maxmind GeoLite2
Country database.
o Minor bugfixes (compilation, backport from 0.2.7.6):
- Fix a compilation warning with Clang 3.6: Do not check the
presence of an address which can never be NULL. Fixes bug 17781.
o Minor bugfixes (hidden service, backport from 0.2.7.1-alpha):
- Fix an out-of-bounds read when parsing invalid INTRODUCE2 cells on
a client authorized hidden service. Fixes bug 15823; bugfix
on 0.2.1.6-alpha.
 
Changes in version 0.3.0.4-rc - 2017-03-01
Tor 0.3.0.4-rc fixes some remaining bugs, large and small, in the
ReleaseNotes
+ 460
− 0
View file @ c04209c3
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