REDHAT-BUG-959041

First published: Fri May 03 2013(Updated: )

Ruby on Rails uses a HMAC for verifying the integrity of signed cookies. To prevent session hash tampering, a digest is calculated from the session with a server-side secret and inserted into the end of the cookie. It was found that CloudForms Management Engine (CFME) is using a statically defined secret, which is common across all deployments. A remote attacker could use this statically defined secret to perform a session tampering attack. External references: <a href="http://blog.phusion.nl/2013/01/04/securing-the-rails-session-secret/">http://blog.phusion.nl/2013/01/04/securing-the-rails-session-secret/</a> <a href="http://blog.mhartl.com/2008/08/15/a-security-issue-with-rails-secret-session-keys/">http://blog.mhartl.com/2008/08/15/a-security-issue-with-rails-secret-session-keys/</a>

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