Adobe Reader and the Adobe Acrobat family of software are designed to create, view, and edit Portable Document Format (PDF) files. Adobe Reader is widely deployed, and the Acrobat Reader Plug-In displays PDF inside a web browser.
Enable Data Execution Prevention (DEP) in Microsoft Windows
Prevent Internet Explorer from automatically opening PDF documents
The installer for Adobe Reader and Acrobat configures Internet Explorer to automatically open PDF files without any user interaction. This behavior can be reverted to the safer option of prompting the user by importing the following as a .REG file:
Windows Registry Editor Version 5.00
Disable the displaying of PDF documents in the web browser
Preventing PDF documents from opening inside a web browser reduces attack surface. If this workaround is applied to updated versions of Adobe Reader and Acrobat, it may protect against future vulnerabilities.
To prevent PDF documents from automatically being opened in a web browser with Adobe Reader:
Thanks to Richard van Eeden of IOActive, for reporting this issue.
This document was written by Chad R Dougherty.
|Date First Published:||2009-10-13|
|Date Last Updated:||2009-10-27 19:04 UTC|