RealNetworks Releases Security Update to Address RealOne Player, RealPlayer Security Vulnerabilities.

Updated March 27, 2003

On March 7, 2003, a security exploit affecting RealOne Player and RealPlayer 8 was brought to the attention of RealNetworks.

The specific exploit was:

While we have not received reports of anyone actually being attacked with this exploit, all security vulnerabilities are taken very seriously by RealNetworks. RealNetworks has found and fixed the problem.

This vulnerability was due to the usage of an older, vulnerable version of a data-compression library within the RealPix component of the Player. The vulnerability was fixed by using an updated (non-vulnerable) version of this data-compression library in RealPix.

In addition to fixing the reported vulnerability, RealNetworks performed a review of all of the RealOne Player source code to identify other areas where this data-compression library is used. As a result of this review, several additional Player components have also been fixed, and are included in the provided updates.

Affected Software:

RealOne Player and RealOne Player v2 for Windows (all language versions), RealPlayer 8 for Windows (all language versions), RealPlayer 8 for Mac OS 9, RealOne Player for Mac OS X, RealOne Enterprise Desktop Manager and RealOne Enterprise Desktop (all versions).

The Helix DNA Client is not affected by this vulnerability.

To ensure that your Player is protected, we recommend installing the updates available.


Windows Players:
Please use the following steps to update your RealOne Player and RealPlayer8:

   RealOne Player (, RealOne Player version 2(

  1. Go to the Tools menu.
  2. Select "Check for Update".
  3. Select the box next to the "Security Update - March2003" component.
  4. Click the Install button to download and install the update.

   RealPlayer 8 (version

  1. Go to the Help menu.
  2. Select "Check for Update".
  3. Select the box next to the  "Security Update -March 2003" component.
  4. Click the Install button to download and install theupdate.

RealOne Player for OS X:
Please go to to download an updated RealOne Player.

RealPlayer 8 for MacOS 9 (version
Please click here to download the update archive, and then follow these steps to install the updated components:

  1. Decompress the update archive using Stuffit Expander.
  2. Close (quit) the RealPlayer if currently running.
  3. Copy the following update files from the archive
    • pxpf60.dll
    • pxpr60.dll
    • pxgr60.dll
    • pxcpng60.dll
    • httpfsys60.dll
    • swfrend60.dll
to the System Folder:Application Support:Real:Plugins folder, which can be opened through the following -
    • Open the System Folder
    • Open the Application Support folder within the System Folder
    • Open the Real folder within the Application Support folder
    • Open the Plugins folder with the Real folder
  1. Select "Okay" when asked to replace older items with the same names.

RealOne Enterprise Products:
Update as of April 2, 2003:

Please click here to update your RealOne Desktop Manager.
Please click here to update your RealOne Enterprise Desktop.

Other Player versions:
Users of other versions of the Player, including

are strongly encouraged to first upgrade to the newest version of the RealOne Player, and then follow the above security update instructions.

The vulnerabilities were discovered with the help of Carlos Sarraute and Juliano Rizzo of Core Security Technologies.

While RealNetworks endeavors to provide you with the highest quality products and services, we cannot guarantee and do not warrant that the operation of any RealNetworks product will be error-free, uninterrupted or secure. See your original license agreement for details of our limited warranty or warranty disclaimer.