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authorNick Mathewson <nickm@torproject.org>2014-05-29 11:21:17 -0400
committerNick Mathewson <nickm@torproject.org>2014-05-29 11:21:23 -0400
commit413a442f57abb084499d1aa363aee1f8a0b53ad8 (patch)
treef6c0389c24f8c3d13aaf30894aaa79a455cd019c /changes/bug11743
parenta6688f9cbb930ad139a7f3886684fcadeec59d30 (diff)
downloadtor-413a442f57abb084499d1aa363aee1f8a0b53ad8.tar
tor-413a442f57abb084499d1aa363aee1f8a0b53ad8.tar.gz
Start on the 0.2.5.5-alpha changelog.
I've copied the entries from changes/, labeled the ones that also appeared in 0.2.4.22, sorted them lightly with a python script (added to maint), and combined sections with the same name. I didn't combine sections without a description (e.g. "Minor bugfixes:"), since we'll probably add a description to those.
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- o Major security fixes (directory authorities):
-
- - Directory authorities now include a digest of each relay's
- identity key as a part of its microdescriptor.
-
- This is a workaround for bug #11743 (reported by "cypherpunks"),
- where Tor clients do not
- support receiving multiple microdescriptors with the same SHA256
- digest in the same consensus. When clients receive a consensus
- like this, they only use one of the relays. Without this fix, a
- hostile relay could selectively disable some client use of target
- relays by constucting a router descriptor with a different
- identity and the same microdescriptor parameters and getting the
- authorities to list it in a microdescriptor consensus. This fix
- prevents an attacker from causing a microdescriptor collision,
- because the router's identity is not forgeable.