If the client uses the default Tailscale control URL, validate that all
PopBrowserURLs are under tailscale.com or *.tailscale.com. This reduces
the risk of a compromised control plane opening phishing pages for
example.
The client trusts control for many other things, but this is one easy
way to reduce that trust a bit.
Fixes#11393
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
According to
https://learn.microsoft.com/en-us/windows/win32/msi/standard-installer-command-line-options#promptrestart,
`/promptrestart` is ignored with `/quiet` is set, so msiexec.exe can
sometimes silently trigger a reboot. The best we can do to reduce
unexpected disruption is to just prevent restarts, until the user
chooses to do it. Restarts aren't normally needed for Tailscale updates,
but there seem to be some situations where it's triggered.
Updates #18254
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
This fixes a bug that was introduced in #11258 where the handling of the
per-client limit didn't properly account for the fact that the gVisor
TCP forwarder will return 'true' to indicate that it's handled a
duplicate SYN packet, but not launch the handler goroutine.
In such a case, we neither decremented our per-client limit in the
wrapper function, nor did we do so in the handler function, leading to
our per-client limit table slowly filling up without bound.
Fix this by doing the same duplicate-tracking logic that the TCP
forwarder does so we can detect such cases and appropriately decrement
our in-flight counter.
Updates tailscale/corp#12184
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ib6011a71d382a10d68c0802593f34b8153d06892
To force the problem in its worst case scenario before fixing it.
Updates tailscale/corp#17859
Change-Id: I2c8b8e5f15c7801e1ab093feeafac52ec175a763
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
There are container environments such as GitHub codespaces that have
partial IPv6 support - routing support is enabled at the kernel level,
but lacking IPv6 filter support in the iptables module.
In the specific example of the codespaces environment, this also has
pre-existing legacy iptables rules in the IPv4 tables, as such the
nascent firewall mode detection will always pick iptables.
We would previously fault trying to install rules to the filter table,
this catches that condition earlier, and disables IPv6 support under
these conditions.
Updates #5621
Updates #11344
Updates #11354
Signed-off-by: James Tucker <james@tailscale.com>
build_docker, update-flake: cleanup and apply shellcheck fixes
Was editing this file to match my needs while shellcheck warnings
bugged me out.
REV isn't getting used anywhere. Better remove it.
Updates #cleanup
Signed-off-by: Panchajanya1999 <kernel@panchajanya.dev>
Signed-off-by: James Tucker <james@tailscale.com>
- Updates API to support renaming TailFS shares.
- Adds a CLI rename subcommand for renaming a share.
- Renames the CLI subcommand 'add' to 'set' to make it clear that
this is an add or update.
- Adds a unit test for TailFS in ipnlocal
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
Previously, the configuration of which folders to share persisted across
profile changes. Now, it is tied to the user's profile.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
This pretty much always results in an outage because peers won't
discover our new home region and thus won't be able to establish
connectivity.
Updates tailscale/corp#18095
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ic0d09133f198b528dd40c6383b16d7663d9d37a7
Synology requires version numbers are within int32 range. This
change updates the version logic to keep things closer within the
range, and errors on building when the range is exceeded.
Updates #cleanup
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
bump version for adding NodeAttrSuggestExitNode
remove extra s from NodeAttrSuggestExitNode
Updates tailscale/corp#17516
Signed-off-by: Claire Wang <claire@tailscale.com>
Run yarn-deduplicate on yarn.lock to dedupe packages. This is being done
to reduce the number of redundant packages fetched by yarn when existing
versions in the lockfile satisfy the version dependency we need.
See https://github.com/scinos/yarn-deduplicate for details on the tool
used to perform this deduplication.
Updates #cleanup
Signed-off-by: Mario Minardi <mario@tailscale.com>
So we can use it in trunkd to quiet down the logs there.
Updates #5563
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ie3177dc33f5ad103db832aab5a3e0e4f128f973f
This test could hang because the subprocess was blocked on writing to
the stdout pipe if we find the address we're looking for early in the
output.
Updates #cleanup
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I68d82c22a5d782098187ae6d8577e43063b72573
The `stack.PacketBufferPtr` type no longer exists; replace it with
`*stack.PacketBuffer` instead.
Updates #8043
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ib56ceff09166a042aa3d9b80f50b2aa2d34b3683
In case we want to change the format to something opaque later.
Updates tailscale/corp#2549
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ie2eac8b885b694be607e9d5101d24b650026d89c
This eliminates unnecessary map.Clone() calls and also eliminates
repetitive notifications about the same set of shares.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
Updates tailscale/corp#17859
Provides a local API endpoint to be called from the GUI to inform the backend when the client menu is opened or closed.
cc @bradfitz
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
Signed-off-by: Andrea Gottardo <andrea@tailscale.com>
Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
This is a temporary solution to at least omit Mullvad exit nodes
from the list of TailFS peers. Once we can identify peers that are
actually sharing via TailFS, we can remove this, but for alpha it'll
be sufficient to just omit Mullvad.
Updates tailscale/corp#17766
Signed-off-by: Percy Wegmann <percy@tailscale.com>
Moving logic that manipulates a ServeConfig into recievers on the
ServeConfig in the ipn package. This is setup work to allow the
web client and cli to both utilize these shared functions to edit
the serve config.
Any logic specific to flag parsing or validation is left untouched
in the cli command. The web client will similarly manage its
validation of user's requested changes. If validation logic becomes
similar-enough, we can make a serve util for shared functionality,
which likely does not make sense in ipn.
Updates #10261
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
Since link-local addresses are definitionally more likely to be a direct
(lower-latency, more reliable) connection than a non-link-local private
address, give those a bit of a boost when selecting endpoints.
Updates #8097
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I93fdeb07de55ba39ba5fcee0834b579ca05c2a4e
In preparation for changes to allow configuration of serve/funnel
from the web client, this commit moves some functionality that will
be shared between the CLI and web client to the ipn package's
serve.go file, where some other util funcs are already defined.
Updates #10261
Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
Update docs for static Tailscale deployments on kube
to always use firewall mode autodection when in non-userspace.
Also add a note about running multiple replicas and a few suggestions how folks could do that.
Updates#cleanup
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Co-authored-by: Anton Tolchanov <1687799+knyar@users.noreply.github.com>
When serving TailFS shares, tailscaled executes another tailscaled to act as a
file server. It attempts to execute this child process as an unprivileged user
using sudo -u. This is important to avoid accessing files as root, which would
result in potential privilege escalation.
Previously, tailscaled assumed that it was running as someone who can sudo -u,
and would fail if it was unable to sudo -u.
With this commit, if tailscaled is unable to sudo -u as the requested user, and
tailscaled is not running as root, then tailscaled executes the the file server
process under the same identity that ran tailscaled, since this is already an
unprivileged identity.
In the unlikely event that tailscaled is running as root but is unable to
sudo -u, it will refuse to run the child file server process in order to avoid
privilege escalation.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
The package info output can list multiple package versions, and not in
descending order. Find the newest version in the output, instead of the
first one.
Fixes#11309
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Ensure that the latest DNATNonTailscaleTraffic rule
gets inserted on top of any pre-existing rules.
Updates tailscale/tailscale#11281
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This allows the Mac application to regain access to restricted
folders after restarts.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
This allows the sandboxed Mac application to store security-
scoped URL bookmarks in order to maintain access to restricted
folders across restarts.
Updates tailscale/corp#16827
Signed-off-by: Percy Wegmann <percy@tailscale.com>
This was just added in 69f4b459 which doesn't yet use it. This still
doesn't yet use it. It just pushes it down deeper into magicsock where
it'll used later.
Updates #7617
Change-Id: If2f8fd380af150ffc763489e1ff4f8ca2899fac6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We used a HandleSet before when we didn't have a unique handle. But a
sessionID is a unique handle, so use that instead. Then that replaces
the other map we had.
And now we'll have a way to look up an IPN session by sessionID for
later.
Updates tailscale/corp#17859
Change-Id: I5f647f367563ec8783c643e49f93817b341d9064
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
