101 lines
2.8 KiB
Bash
101 lines
2.8 KiB
Bash
#!/usr/bin/env bats -*- bats -*-
|
|
#
|
|
# Tests #2730 - regular users are not able to read/write container storage
|
|
#
|
|
|
|
load helpers
|
|
|
|
@test "podman container storage is not accessible by unprivileged users" {
|
|
skip_if_rootless "test meaningless without suid"
|
|
skip_if_remote
|
|
|
|
run_podman run --name c_uidmap --uidmap 0:10000:10000 $IMAGE true
|
|
run_podman run --name c_uidmap_v --uidmap 0:10000:10000 -v foo:/foo $IMAGE true
|
|
|
|
run_podman run --name c_mount $IMAGE \
|
|
sh -c "echo hi > /myfile;mkdir -p /mydir/mysubdir; chmod 777 /myfile /mydir /mydir/mysubdir"
|
|
|
|
run_podman mount c_mount
|
|
mount_path=$output
|
|
|
|
# Do all the work from within a test script. Since we'll be invoking it
|
|
# as a user, the parent directory must be world-readable.
|
|
test_script=$PODMAN_TMPDIR/fail-if-writable
|
|
cat >$test_script <<"EOF"
|
|
#!/bin/bash
|
|
|
|
path="$1"
|
|
|
|
die() {
|
|
echo "#/vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv" >&2
|
|
echo "#| FAIL: $*" >&2
|
|
echo "#\\^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" >&2
|
|
|
|
# Show permissions of directories from here on up
|
|
while expr "$path" : "/var/lib/containers" >/dev/null; do
|
|
echo "#| $(ls -ld $path)"
|
|
path=$(dirname $path)
|
|
done
|
|
|
|
exit 1
|
|
}
|
|
|
|
parent=$(dirname "$path")
|
|
if chmod +w $parent; then
|
|
die "Able to chmod $parent"
|
|
fi
|
|
if chmod +w "$path"; then
|
|
die "Able to chmod $path"
|
|
fi
|
|
|
|
if [ -d "$path" ]; then
|
|
if ls "$path" >/dev/null; then
|
|
die "Able to run 'ls $path' without error"
|
|
fi
|
|
if echo hi >"$path"/test; then
|
|
die "Able to write to file under $path"
|
|
fi
|
|
else
|
|
# Plain file
|
|
if cat "$path" >/dev/null; then
|
|
die "Able to read $path"
|
|
fi
|
|
if echo hi >"$path"; then
|
|
die "Able to write to $path"
|
|
fi
|
|
fi
|
|
|
|
exit 0
|
|
EOF
|
|
chmod 755 $PODMAN_TMPDIR $test_script
|
|
|
|
# get podman image and container storage directories
|
|
run_podman info --format '{{.Store.GraphRoot}}'
|
|
is "$output" "/var/lib/containers/storage" "GraphRoot in expected place"
|
|
GRAPH_ROOT="$output"
|
|
run_podman info --format '{{.Store.RunRoot}}'
|
|
is "$output" "/var/run/containers/storage" "RunRoot in expected place"
|
|
RUN_ROOT="$output"
|
|
|
|
# The main test: find all world-writable files or directories underneath
|
|
# container storage, run the test script as a nonroot user, and try to
|
|
# access each path.
|
|
find $GRAPH_ROOT $RUN_ROOT \! -type l -perm -o+w -print | while read i; do
|
|
dprint " o+w: $i"
|
|
|
|
# use chroot because su fails if uid/gid don't exist or have no shell
|
|
# For development: test all this by removing the "--userspec x:x"
|
|
chroot --userspec 1000:1000 / $test_script "$i"
|
|
done
|
|
|
|
# Done. Clean up.
|
|
rm -f $test_script
|
|
|
|
run_podman umount c_mount
|
|
run_podman rm c_mount
|
|
|
|
run_podman rm c_uidmap c_uidmap_v
|
|
}
|
|
|
|
# vim: filetype=sh
|