Is affected the system:
Apple QuickTime Player < 7.4

Not affected system:
Apple QuickTime Player 7.4

Description:
Apple QuickTime is a section of very popular multimedia player.

QuickTime has not analyzed the graph descrptor correctly (IDSC) the atom, if the user were deceived opens has contained has abnormal IDSC atom malicious movie document, triggered the memory on the possibility to destroy, causes to refuse to serve or to carry out the random order.

Manufacturer patch:
At present the manufacturer had already issued the promotion patch repairs this security problem, welcome to manufacturer main page downloading:

http://wsidecar.apple.com/cgi-bin/nph-reg3rdpty2.pl/product=16944&cat=1&platform=osx&method=sa/