A denial of service flaw exists in RealPlayer and HelixPlayer when a user tries to open a malformed .au file. The flaw is due to a Division by Zero error when processing a malformed AU file. An attacker must entice an unsuspecting user to open a maliciously crafted AU file. Realplayer versions 10.1.0.3114 and below and Helixplayer version 1.0.6.778 are affected. Proof of concept included.
