add a regression test for CVE-2022-1227
Will also be included in the upcoming backports.
@@ -821,4 +821,28 @@ EOF
run_podman run --rm $IMAGE cat /proc/self/oom_score_adj
is "$output" "$current_oom_score_adj" "different oom_score_adj in the container"
}
+
+# CVE-2022-1227 : podman top joins container mount NS and uses nsenter from image
+@test "podman top does not use nsenter from image" {
+ tmpdir=$PODMAN_TMPDIR/build-test
+ mkdir -p $tmpdir
+ tmpbuilddir=$tmpdir/build
+ mkdir -p $tmpbuilddir
+ dockerfile=$tmpbuilddir/Dockerfile
+ cat >$dockerfile <<EOF
+FROM $IMAGE
+RUN rm /usr/bin/nsenter; \
+echo -e "#!/bin/sh\nfalse" >> /usr/bin/nsenter; \
+chmod +x /usr/bin/nsenter
+EOF
+
+ test_image="cve_2022_1227_test"
+ run_podman build -t $test_image $tmpbuilddir
+ run_podman run -d --userns=keep-id $test_image top
+ ctr="$output"
+ run_podman top $ctr huser,user
+ run_podman rm -f -t0 $ctr
+ run_podman rmi $test_image
+}
+
# vim: filetype=sh
