CVE-2021-21272: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

ORAS is open source software which enables a way to push OCI Artifacts to OCI Conformant registries. ORAS suffers from a zip-slip vulnerability. The directory support feature allows the downloaded gzipped tarballs to be automatically extracted to the user-specified directory where the tarball can have symbolic links and hard links. A well-crafted tarball or tarballs allow malicious artifact providers linking, writing, or overwriting specific files on the host filesystem outside of the user-specified directory unexpectedly with the same permissions as the user who runs oras pull.