mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-09-21 13:34:59 +02:00
17 lines
883 B
Plaintext
17 lines
883 B
Plaintext
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.
|