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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 91 |
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@@ -1,6 +1,97 @@ Changes in version 0.2.5.5-alpha - 2014-05-?? +Changes in version 0.2.4.22 - 2014-05-16 + Tor 0.2.4.22 backports numerous high-priority fixes from the Tor 0.2.5 + alpha release series. These include blocking all authority signing + keys that may have been affected by the OpenSSL "heartbleed" bug, + choosing a far more secure set of TLS ciphersuites by default, closing + a couple of memory leaks that could be used to run a target relay out + of RAM, and several others. + + o Major features (security, backport from 0.2.5.4-alpha): + - Block authority signing keys that were used on authorities + vulnerable to the "heartbleed" bug in OpenSSL (CVE-2014-0160). (We + don't have any evidence that these keys _were_ compromised; we're + doing this to be prudent.) Resolves ticket 11464. + + o Major bugfixes (security, OOM): + - Fix a memory leak that could occur if a microdescriptor parse + fails during the tokenizing step. This bug could enable a memory + exhaustion attack by directory servers. Fixes bug 11649; bugfix + on 0.2.2.6-alpha. + + o Major bugfixes (TLS cipher selection, backport from 0.2.5.4-alpha): + - The relay ciphersuite list is now generated automatically based on + uniform criteria, and includes all OpenSSL ciphersuites with + acceptable strength and forward secrecy. Previously, we had left + some perfectly fine ciphersuites unsupported due to omission or + typo. Resolves bugs 11513, 11492, 11498, 11499. Bugs reported by + 'cypherpunks'. Bugfix on 0.2.4.8-alpha. + - Relays now trust themselves to have a better view than clients of + which TLS ciphersuites are better than others. (Thanks to bug + 11513, the relay list is now well-considered, whereas the client + list has been chosen mainly for anti-fingerprinting purposes.) + Relays prefer: AES over 3DES; then ECDHE over DHE; then GCM over + CBC; then SHA384 over SHA256 over SHA1; and last, AES256 over + AES128. Resolves ticket 11528. + - Clients now try to advertise the same list of ciphersuites as + Firefox 28. This change enables selection of (fast) GCM + ciphersuites, disables some strange old ciphers, and stops + advertising the ECDH (not to be confused with ECDHE) ciphersuites. + Resolves ticket 11438. + + o Minor bugfixes (configuration, security): + - When running a hidden service, do not allow TunneledDirConns 0: + trying to set that option together with a hidden service would + otherwise prevent the hidden service from running, and also make + it publish its descriptors directly over HTTP. Fixes bug 10849; + bugfix on 0.2.1.1-alpha. + + o Minor bugfixes (controller, backport from 0.2.5.4-alpha): + - Avoid sending a garbage value to the controller when a circuit is + cannibalized. Fixes bug 11519; bugfix on 0.2.3.11-alpha. + + o Minor bugfixes (exit relay, backport from 0.2.5.4-alpha): + - Stop leaking memory when we successfully resolve a PTR record. + Fixes bug 11437; bugfix on 0.2.4.7-alpha. + + o Minor bugfixes (bridge client, backport from 0.2.5.4-alpha): + - Avoid 60-second delays in the bootstrapping process when Tor is + launching for a second time while using bridges. Fixes bug 9229; + bugfix on 0.2.0.3-alpha. + + o Minor bugfixes (relays and bridges, backport from 0.2.5.4-alpha): + - Give the correct URL in the warning message when trying to run a + relay on an ancient version of Windows. Fixes bug 9393. + + o Minor bugfixes (compilation): + - Fix a compilation error when compiling with --disable-curve25519. + Fixes bug 9700; bugfix on 0.2.4.17-rc. + + o Minor bugfixes: + - Downgrade the warning severity for the the "md was still + referenced 1 node(s)" warning. Tor 0.2.5.4-alpha has better code + for trying to diagnose this bug, and the current warning in + earlier versions of tor achieves nothing useful. Addresses warning + from bug 7164. + + o Minor features (log verbosity, backport from 0.2.5.4-alpha): + - When we run out of usable circuit IDs on a channel, log only one + warning for the whole channel, and describe how many circuits + there were on the channel. Fixes part of ticket 11553. + + o Minor features (security, backport from 0.2.5.4-alpha): + - Decrease the lower limit of MaxMemInCellQueues to 256 MBytes (but + leave the default at 8GBytes), to better support Raspberry Pi + users. Fixes bug 9686; bugfix on 0.2.4.14-alpha. + + o Documentation (backport from 0.2.5.4-alpha): + - Correctly document that we search for a system torrc file before + looking in ~/.torrc. Fixes documentation side of 9213; bugfix on + 0.2.3.18-rc. + + Changes in version 0.2.5.4-alpha - 2014-04-25 Tor 0.2.5.4-alpha includes several security and performance improvements for clients and relays, including blacklisting authority |