CVE-2014-3486

(1) La función shell_exec en lib/util/MiqSshUtilV1.rb y (2) la función temp_cmd_file en lib/util/MiqSshUtilV2.rb en Red Hat CloudForms 3.0 Management Engine (CFME) anterior a 5.2.4.2 permiten a usuarios locales ejecutar comandos arbitrarios a través de un ataque de enlace simbólico sobre un fichero temporal con un nombre predecible.

Red Hat CloudForms Management Engine delivers the insight, control, and automation needed to address the challenges of managing virtual environments. CloudForms Management Engine is built on Ruby on Rails, a model-view-controller framework for web application development. Action Pack implements the controller and the view components. The SSH utility script created a world-writable file in /tmp/ using a predictable name, and then executed it as root. A local attacker could use this flaw to execute arbitrary commands as the root user. A directory traversal flaw was found in the way Ruby on Rails handled wildcard segments in routes with implicit rendering. A remote attacker could use this flaw to retrieve arbitrary local files accessible to a Ruby on Rails application using the aforementioned routes via a specially crafted request.