Vulnerability Note VU#698924

Adobe Acrobat allows pointer overwrite via specially crafted PDF file

Original Release date: 19 Jan 2007 | Last revised: 24 Jan 2007


Adobe Acrobat and Adobe Reader fail to properly handle a specially crafted PDF file, which may allow a remote attacker to execute arbitrary code on a vulnerable system.


Adobe Acrobat and Adobe Reader are applications designed to create and view Portable Document Format (PDF) files. A specially crafted PDF file can cause heap memory corruption when it is opened in these applications. This memory corruption may allow an attacker to overwrite the contents of the EIP (Extended Instruction Pointer) register, thus gaining control of program execution flow. According to Adobe, the affected versions are:

    Adobe Reader 7.0.8 and earlier versions
    Adobe Acrobat Standard, Professional and Elements 7.0.8 and earlier versions
    Adobe Acrobat 3D


A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


Apply an update
Apply an update, as specified in Adobe Security bulletin APSB07-01.

Disable the displaying of PDF documents in the web browser

To prevent PDF documents from automatically being opened in a web browser:

  1. Open Adobe Acrobat Reader.
  2. Open the Edit menu.
  3. Choose the preferences option.
  4. Choose the Internet section.
  5. Un-check the "Display PDF in browser" check box.
Do not access PDF documents from untrusted sources

Do not open unfamiliar or unexpected PDF documents, particularly those hosted on web sites or delivered as email attachments. Please see Cyber Security Tip ST04-010.
Any website that hosts a PDF document may be leveraged to exploit this vulnerability. Web site and network Administrators can take the following steps to prevent their web sites from being leveraged in attacks using this vulnerability:

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
AdobeAffected-19 Jan 2007
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Thanks to Piotr Bania for reporting this vulnerability.

This document was written by Will Dormann.

Other Information

  • CVE IDs: CVE-2006-5857
  • Date Public: 10 Jan 2007
  • Date First Published: 19 Jan 2007
  • Date Last Updated: 24 Jan 2007
  • Severity Metric: 12.05
  • Document Revision: 14


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