Affected: Red Hat Migration Toolkit for Applications 8, Red Hat Migration Toolkit for Virtualization, Red Hat OpenShift Service Mesh 3, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Ansible Automation Platform 2, Red Hat Ansible Automation Platform Ansible Core 2, Red Hat Certification Program for Red Hat Enterprise Linux 9, Red Hat Discovery 2, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8 and 7 more

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.