Adobe Reader and Acrobat 6.0.4 and earlier, on Mac OSX, has insecure file and directory permissions, which allows local users to gain privileges by overwriting program files. This vulnerability only exists in multi-user environments.
This vulnerability is addressed in the following product releases:
Adobe, Acrobat Reader, 6.0.5 for Mac OSX
Adobe, Acrobat, 6.0.5 for Mac OSX