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[tor-bugs] #25574 [Core Tor/Tor]: Eliminate "silent-drop" side channels in Tor protocol
#25574: Eliminate "silent-drop" side channels in Tor protocol
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Reporter: mikeperry | Owner: (none)
Type: defect | Status: new
Priority: Medium | Milestone:
Component: Core Tor/Tor | Version:
Severity: Normal | Keywords: guard-discovery-stats
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: SponsorV-can |
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https://tools.ietf.org/html/draft-thomson-postel-was-wrong-00
There are lots of ways to inject data into Tor streams, and this is a
vector of attack for guard discovery and confirmation:
https://petsymposium.org/2018/files/papers/issue2/popets-2018-0011.pdf
I have a branch that tries to eliminate a pile of these from a while ago,
but it has lots of false positives due to the common occurrence of invalid
stream IDs in practice (see #25573).
https://gitweb.torproject.org/mikeperry/tor.git/log/?h
=timing_sidechannel_fix-squashed1
I think we may want to do #25573 before trying to merge that branch.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25574>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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