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Changelog for 0.2.4.27

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Nick Mathewson 2015-04-06 09:55:27 -04:00
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24
ChangeLog
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@ -1,3 +1,27 @@
Changes in version 0.2.4.27 - 2015-04-06
Tor 0.2.4.27 backports two fixes from 0.2.6.7 for security issues that
could be used by an attacker to crash hidden services, or crash clients
visiting hidden services. Hidden services should upgrade as soon as
possible; clients should upgrade whenever packages become available.
This release also backports a simple improvement to make hidden
services a bit less vulnerable to denial-of-service attacks.
o Major bugfixes (security, hidden service):
- Fix an issue that would allow a malicious client to trigger an
assertion failure and halt a hidden service. Fixes bug 15600;
bugfix on 0.2.1.6-alpha. Reported by "disgleirio".
- Fix a bug that could cause a client to crash with an assertion
failure when parsing a malformed hidden service descriptor. Fixes
bug 15601; bugfix on 0.2.1.5-alpha. Found by "DonnchaC".
o Minor features (DoS-resistance, hidden service):
- Introduction points no longer allow multiple INTRODUCE1 cells to
arrive on the same circuit. This should make it more expensive for
attackers to overwhelm hidden services with introductions.
Resolves ticket 15515.
Changes in version 0.2.4.26 - 2015-03-17
Tor 0.2.4.26 includes an updated list of directory authorities. It
also backports a couple of stability and security bugfixes from 0.2.5

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ReleaseNotes
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@ -3,6 +3,30 @@ This document summarizes new features and bugfixes in each stable release
of Tor. If you want to see more detailed descriptions of the changes in
each development snapshot, see the ChangeLog file.
Changes in version 0.2.4.27 - 2015-04-06
Tor 0.2.4.27 backports two fixes from 0.2.6.7 for security issues that
could be used by an attacker to crash hidden services, or crash clients
visiting hidden services. Hidden services should upgrade as soon as
possible; clients should upgrade whenever packages become available.
This release also backports a simple improvement to make hidden
services a bit less vulnerable to denial-of-service attacks.
o Major bugfixes (security, hidden service):
- Fix an issue that would allow a malicious client to trigger an
assertion failure and halt a hidden service. Fixes bug 15600;
bugfix on 0.2.1.6-alpha. Reported by "disgleirio".
- Fix a bug that could cause a client to crash with an assertion
failure when parsing a malformed hidden service descriptor. Fixes
bug 15601; bugfix on 0.2.1.5-alpha. Found by "DonnchaC".
o Minor features (DoS-resistance, hidden service):
- Introduction points no longer allow multiple INTRODUCE1 cells to
arrive on the same circuit. This should make it more expensive for
attackers to overwhelm hidden services with introductions.
Resolves ticket 15515.
Changes in version 0.2.4.26 - 2015-03-17
Tor 0.2.4.26 includes an updated list of directory authorities. It
also backports a couple of stability and security bugfixes from 0.2.5