RahulPatel–twikies…

May 7, 2009

Critical security hole in Adobe Acrobat PDF readers

Filed under: My Knowledge — Rahul Patel @ 9:17 am

Adobe has issued a security alert after a critical zero-day vulnerability was discovered in their popular PDF reading program which could allow hackers to take control of computers.

The risk is that hackers could deliberately construct a malformed PDF file that would trigger the vulnerability, allowing them to open a backdoor and run malicious code on your computer. This would mean that criminals could, for instance, spam out a PDF file that would infect your PC, or plant malicious PDF content on a website.

As PDF files are so widely used on the internet, and regularly exchanged to share information, there is an obvious concern that hackers may be quick to take advantage of this vulnerability.

The vulnerability, which is not limited to Windows users but also affects Mac and Unix users, means that Adobe users are being advised to disable JavaScript in Adobe Reader and Acrobat until a proper fix is available.

Adobe advises that JavaScript can be disabled by following these instructions:

1. Launch Acrobat or Adobe Reader.
2. Select Edit/Preferences
3. Select the JavaScript Category
4. Uncheck the ‘Enable Acrobat JavaScript’ option
OR
Adm template to implement this setting from GPO:
download adobe.adm from my shared box..

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