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@@ -1,3 +1,48 @@ +Changes in version 0.2.5.16 - 2017-12-01 + Tor 0.2.5.13 backports important security and stability bugfixes from + later Tor releases. All Tor users should upgrade to this release, or + to another of the releases coming out today. + + Note: the Tor 0.2.5 series will no longer be supported after 1 May + 2018. If you need a release with long-term support, please upgrade to + the 0.2.9 series. Otherwise, please upgrade to 0.3.1 or later. + + o Major bugfixes (security, backport from 0.3.2.6-alpha): + - Fix a denial of service bug where an attacker could use a + malformed directory object to cause a Tor instance to pause while + OpenSSL would try to read a passphrase from the terminal. (Tor + instances run without a terminal, which is the case for most Tor + packages, are not impacted.) Fixes bug 24246; bugfix on every + version of Tor. Also tracked as TROVE-2017-011 and CVE-2017-8821. + Found by OSS-Fuzz as testcase 6360145429790720. + - When checking for replays in the INTRODUCE1 cell data for a + (legacy) onion service, correctly detect replays in the RSA- + encrypted part of the cell. We were previously checking for + replays on the entire cell, but those can be circumvented due to + the malleability of Tor's legacy hybrid encryption. This fix helps + prevent a traffic confirmation attack. Fixes bug 24244; bugfix on + 0.2.4.1-alpha. This issue is also tracked as TROVE-2017-009 + and CVE-2017-8819. + + o Major bugfixes (security, relay, backport from 0.3.2.6-alpha): + - When running as a relay, make sure that we never build a path + through ourselves, even in the case where we have somehow lost the + version of our descriptor appearing in the consensus. Fixes part + of bug 21534; bugfix on 0.2.0.1-alpha. This issue is also tracked + as TROVE-2017-012 and CVE-2017-8822. + + o Minor features (bridge, backport from 0.3.1.9): + - Bridges now include notice in their descriptors that they are + bridges, and notice of their distribution status, based on their + publication settings. Implements ticket 18329. For more fine- + grained control of how a bridge is distributed, upgrade to 0.3.2.x + or later. + + o Minor features (geoip): + - Update geoip and geoip6 to the November 6 2017 Maxmind GeoLite2 + Country database. + + Changes in version 0.2.5.15 - 2017-10-25 Tor 0.2.5.15 backports a collection of bugfixes from later Tor release series. It also adds a new directory authority, Bastet. |