Updated dbus packages that fix a security issue are now available for RedHat Enterprise Linux 5.This update has been rated as having moderate security impact by the RedHat Security Response Team.D-Bus is a system for sending messages between applications. It is used forthe system-wide message bus service and as a per-user-login-sessionmessaging facility.A denial-of-service flaw was discovered in the system for sending messagesbetween applications. A local user could send a message with a malformedsignature to the bus causing the bus (and, consequently, any process usinglibdbus to receive messages) to abort. (CVE-2008-3834)