Files
lix/tests/functional/build-remote-trustless.sh
T
eldritch horrorsandRaito Bezarius 91f526e739 libstore: don't default build-dir to temp-dir
if a build directory is accessible to other users it is possible to
smuggle data in and out of build directories. usually this ins only
a build purity problem, but in combination with other issues it can
be used to break out of a build sandbox. to prevent this we default
to using a subdirectory of nixStateDir (which is more restrictive).

Fixes CVE-2025-52991.

Change-Id: Iacfc9b50534de158618c815f9fb99d7dae1be4d0
2025-06-24 10:50:21 +00:00

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requireSandboxSupport
[[ $busybox =~ busybox ]] || skipTest "no busybox"
unset NIX_STORE_DIR
remoteDir=$TEST_ROOT/remote
# Note: ssh{-ng}://localhost bypasses ssh. See tests/functional/build-remote.sh for
# more details.
nix-build $file -o $TEST_ROOT/result --max-jobs 0 \
--arg busybox $busybox \
--store $TEST_ROOT/local \
--builders "$proto://localhost?remote-program=$prog&remote-store=${remoteDir}%3Fsystem-features=foo%20bar%20baz - - 1 1 foo,bar,baz"