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https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-12-06 19:41:15 +01:00
George Kadianakis
37bcc9f3d2
The client auth protocol allows attacker-controlled x25519 private keys being passed around, which allows an attacker to potentially trigger the all-zeroes assert for client_auth_sk in hs_descriptor.c:decrypt_descriptor_cookie(). We fixed that by making sure that an all-zeroes client auth key will not be used. There are no guidelines for validating x25519 private keys, and the assert was there as a sanity check for code flow issues (we don't want to enter that function with an unitialized key if client auth is being used). To avoid such crashes in the future, we also changed the assert to a BUG-and-err.
Tor protects your privacy on the internet by hiding the connection
between your Internet address and the services you use. We believe Tor
is reasonably secure, but please ensure you read the instructions and
configure it properly.
To build Tor from source:
./configure && make && make install
To build Tor from a just-cloned git repository:
sh autogen.sh && ./configure && make && make install
Home page:
https://www.torproject.org/
Download new versions:
https://www.torproject.org/download/download.html
Documentation, including links to installation and setup instructions:
https://www.torproject.org/docs/documentation.html
Making applications work with Tor:
https://wiki.torproject.org/projects/tor/wiki/doc/TorifyHOWTO
Frequently Asked Questions:
https://www.torproject.org/docs/faq.html
To get started working on Tor development:
See the doc/HACKING directory.
Release timeline:
https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/CoreTorReleases