modules/certs/manifests/config.pp in katello-configure before 1.3.3.pulpv2 in Katello uses weak permissions (666) for the Candlepin bootstrap RPM, which allows local users to modify the Candlepin CA certificate by writing to this file.
https://github.com/jsomara/katello/commit/65f1e42b7bda0f3410931c50598540d944d8bf0d
https://github.com/Katello/katello/commits/master/katello-configure/katello-configure.spec
http://secunia.com/advisories/52774