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Christine Dodrill b89c757817 wgengine/tsdns: explicitly reject .onion lookups
Tor has a location-hidden service feature that enables users to host services
from inside the Tor network. Each of these gets a unique DNS name that ends with
.onion. As it stands now, if a misbehaving application somehow manages to make
a .onion DNS request to our DNS server, we will forward that to the DNS server,
which could leak that to malicious third parties. See the recent bug Brave had
with this[1] for more context.

RFC 7686 suggests that name resolution APIs and libraries MUST respond with
NXDOMAIN unless they can actually handle Tor lookups. We can't handle .onion
lookups, so we reject them.

[1]: https://twitter.com/albinowax/status/1362737949872431108

Fixes tailscale/corp#1351

Signed-off-by: Christine Dodrill <xe@tailscale.com>
2021-03-01 22:17:49 -08:00
.github Switch to Go 1.16. 2021-02-19 13:18:31 -08:00
atomicfile atomicfile: don't Chmod on windows 2020-07-15 12:31:40 -07:00
client/tailscale cmd/hello: break out local HTTP client into client/tailscale 2021-03-01 19:11:31 -08:00
cmd cmd/tailscaled, logtail: share link monitor from wgengine to logtail 2021-03-01 22:09:43 -08:00
control/controlclient control/controlclient, net/{dnscache,dnsfallback}: add DNS fallback mechanism 2021-03-01 18:42:03 -08:00
derp derp/derphttp: return nicer errors from Recv on Close 2021-02-12 12:04:16 -08:00
disco wgengine/magicsock: send, use endpoints in CallMeMaybe messages 2021-01-20 14:59:41 -08:00
health health, control/controlclient, wgengine: report when router unhealthy 2021-02-18 11:48:48 -08:00
internal all: move wgcfg from wireguard-go 2021-01-29 12:52:56 -08:00
ipn ipn/ipnlocal: fix another regression from link monitoring refactor 2021-03-01 20:45:30 -08:00
log log/filelogger: move our Windows disk file writing+rotation package here 2020-10-29 14:59:44 -07:00
logpolicy logpolicy: on Windows, use tailscale-ipn log name if it already existed 2021-02-05 10:57:51 -08:00
logtail cmd/tailscaled, logtail: share link monitor from wgengine to logtail 2021-03-01 22:09:43 -08:00
metrics metrics: add LabelMap.GetFloat 2020-07-19 12:31:12 -07:00
net ipn/ipnlocal: transform default routes into "all but LAN" routes. 2021-03-01 18:47:43 -08:00
paths paths: update some default paths for darwin 2021-02-13 12:10:20 -08:00
portlist portlist: adjust build tags for iOS + Go 1.16 2021-02-19 10:03:33 -08:00
safesocket safesocket, ipn/ipnserver: look up peer creds on Darwin 2021-02-16 20:38:44 -08:00
scripts Allow 2021 in LICENSE header. 2021-01-08 10:23:32 -08:00
smallzstd smallzstd: new package that constructs zstd small encoders/decoders. 2020-07-02 16:13:06 -07:00
syncs Fix receiver in order to be consistent: syncs.WaitGroupChan 2020-11-24 17:20:34 -08:00
tailcfg dnsname,tailcfg: add hostname sanitation logic to node display names (#1304) 2021-02-18 17:15:38 -05:00
tempfork tempfork/wireguard-windows/firewall: add. 2021-03-01 19:37:22 -08:00
tsconst net/netns: add windows support. 2020-09-14 16:28:49 -07:00
tstest tstest/staticcheck: import the main package to fix "go mod tidy" 2021-02-20 09:53:47 -08:00
tstime tstime: add RandomDurationBetween helper 2021-01-21 07:54:14 -08:00
tsweb tsweb: add num_goroutines expvar 2021-02-01 14:38:59 -08:00
types net/portmapper: add NAT-PMP client, move port mapping service probing 2021-02-23 09:07:38 -08:00
util util/systemd: explicitly check for os.ErrNotExist from sdnotify 2021-02-27 19:03:16 -08:00
version version: bump date 2021-02-26 08:14:35 -08:00
wgengine wgengine/tsdns: explicitly reject .onion lookups 2021-03-01 22:17:49 -08:00
.gitattributes .gitattributes: add a smudge filter for go.mod. 2020-02-19 20:02:02 -05:00
.gitignore add nix-shell boilerplate (#1028) 2020-12-29 12:17:03 -05:00
AUTHORS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
CODE_OF_CONDUCT.md Add a code of conduct. 2020-02-10 22:16:30 -08:00
Dockerfile Switch to Go 1.16. 2021-02-19 13:18:31 -08:00
LICENSE LICENSE: Reformat for Github 2021-01-24 16:20:22 -08:00
Makefile wgengine/netstack: fix 32-bit build broken from prior commit 2021-03-01 11:19:31 -08:00
PATENTS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
README.md Switch to Go 1.16. 2021-02-19 13:18:31 -08:00
SECURITY.md Add a SECURITY.md for vulnerability reports. 2020-02-11 10:26:41 -08:00
VERSION.txt VERSION.txt: this is 1.5.0. 2021-01-27 18:45:22 -08:00
api.md api.md: add TOC 2021-01-19 12:35:09 -08:00
build_dist.sh build_dist: fix after version refactor. 2020-11-03 14:40:09 -08:00
build_docker.sh Add docker build script to inject version information 2021-01-21 12:42:53 -08:00
go.mod wgengine/filter: use IPSet for localNets instead of prefixes. 2021-02-22 14:51:22 -08:00
go.sum wgengine/filter: use IPSet for localNets instead of prefixes. 2021-02-22 14:51:22 -08:00
shell.nix add nix-shell boilerplate (#1028) 2020-12-29 12:17:03 -05:00

README.md

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains all the open source Tailscale client code and the tailscaled daemon and tailscale CLI tool. The tailscaled daemon runs primarily on Linux; it also works to varying degrees on FreeBSD, OpenBSD, Darwin, and Windows.

The Android app is at https://github.com/tailscale/tailscale-android

Using

We serve packages for a variety of distros at https://pkgs.tailscale.com .

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers that are not open source.

Building

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

We only guarantee to support the latest Go release and any Go beta or release candidate builds (currently Go 1.16) in module mode. It might work in earlier Go versions or in GOPATH mode, but we're making no effort to keep those working.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.