Red Hat Satellite is a systems management tool for Linux-based infrastructures. It allows for provisioning, remote management and monitoring of multiple Linux deployments with a single, centralized tool. A cross-site scripting flaw was found in the way the Red Hat Satellite web interface performed sanitization of notes for registered systems. A remote authenticated Red Hat Satellite user could create a malicious note that, when viewed by a victim, could execute arbitrary web script with the privileges of the user viewing that note. Multiple cross-site scripting flaws were found in the Red Hat Satellite web interface. A remote attacker could provide a specially crafted link that, when visited by an authenticated Red Hat Satellite user, would lead to arbitrary web script execution in the context of the user"s web interface session. An HTTP header injection flaw was found in the way the Red Hat Satellite web interface processed the return URL parameter for all HTTP GET requests. A remote attacker could use this flaw to conduct cross-site scripting and HTTP response splitting attacks against users visiting the site. Red Hat would like to thank Ben Ford of Puppet Labs for reporting CVE-2012-6149, Ryan Giobbi of UPMC for reporting CVE-2013-1869 and CVE-2013-1871, and Adam Willard and Jose Carlos de Arriba of Foreground Security for reporting CVE-2013-4415. Users of Red Hat Satellite 5.6 are advised to upgrade to these updated packages, which resolve these issues. For this update to take effect, Red Hat Satellite must be restarted. Refer to the Solution section for details.