agent/request/op.cgi in the Registration Authority (RA) component in Red Hat Certificate System (RHCS) 7.3 and Dogtag Certificate System allows remote authenticated users to approve certificate requests queued for arbitrary agent groups via a modified request ID field.
https://bugzilla.redhat.com/show_bug.cgi?id=488706
https://bugzilla.redhat.com/show_bug.cgi?id=484828
http://www.securitytracker.com/id?1022278
http://www.securityfocus.com/bid/35104
http://www.redhat.com/support/errata/RHSA-2009-1065.html