Red Hat Satellite is a system management tool for Linux-based infrastructures. It allows for provisioning, monitoring, and remote management of multiple Linux deployments with a single, centralized tool. It was found that the RPC interface in Satellite would resolve external entities, allowing an attacker to conduct XML External Entity attacks. A remote attacker could use this flaw to read files accessible to the user running the Satellite server, and potentially perform other more advanced XXE attacks. Red Hat would like to thank Travis Emmert for reporting this issue. All spacewalk users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.