On Shutting Off Embedded Executes Adobe Gives Guidance

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Adobe has issued a blog entry to instruct users and administrators on mitigation techniques for the ability to execute embedded executable code with user consent. That capability, reported recently by researcher Didier Stevens, is turned on by default in Acrobat and Reader, as well as other PDF client software.

Users should go to Edit-Preferences, choose the Trust Manager on the left, then on the right unchecked the box indicated in the screen capture below. Click the image for a full-size version.

The Adobe blog entry includes the registry key controlled by this setting so that administrators can push out the setting through the network. A second key allows administrators to prevent users from changing that setting.