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Category:   Application (Generic)  >   R-Viewer Vendors:   Data-Vision, Inc.
R-Viewer Lets Remote Users Execute Arbitrary Code and Local Users View Potentially Sensitive File Contents
SecurityTracker Alert ID:  1018703
SecurityTracker URL:
CVE Reference:   CVE-2007-4750, CVE-2007-4751   (Links to External Site)
Date:  Sep 17 2007
Impact:   Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.6.3768
Description:   A vulnerability was reported in R-Viewer. A remote user can cause arbitrary code to be executed on the target user's system. A local user can view the contents of sensitive files.

A remote user can create a specially crafted RDZ file that, when loaded by the target user with the R-Viewer application, will execute the first file in the archive. The code will run with the privileges of the target user.

The system uses predictable temporary directories that contain unencrypted copies of the contents of the encrypted files. A local user can view the contents the files.

Adam Baldiwn of Symantec Vulnerability Research reported this vulnerability.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system with the privileges of the target user.

A local user can view the contents of encrypted files.

Solution:   The vendor has issued a fixed version (1.6.3768).
Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  SYMSA-2007-009: RemoteDocs R-Viewer Code Execution and Sensitive

Hash: SHA1

                     Symantec Vulnerability Research
                           Security Advisory

   Advisory ID: SYMSA-2007-009
Advisory Title: RemoteDocs R-Viewer Code Execution and Sensitive
                  Information Disclosure
        Author: Adam Baldiwn /
  Release Date: 17-09-2007
   Application: RemoteDocs R-Viewer 1.6.2836
      Platform: Windows
      Severity: Remotely exploitable / User access
 Vendor status: Update available
    CVE Number: CVE-2007-4750 CVE-2007-4751


RemoteDocs R-Viewer is a secure document viewer used by
There exists a design flaw in RemoteDocs R-Viewer where code can be executed
upon opening the RDZ file without any knowlege or warning to the user.
Additionally, temporary files are not properly removed of disk exposing the
encrypted data.


The problem is due to a design flaw in the R-Viewer application. It is
possible to replace the normal encrypted RDZ file with a specially
crafted RDZ file. The first file in this archive will be executed with
current user privledges by the R-Viewer application based strictly on file
extension alone.

To further compound this issue it may be possible for an attacker to gain
other sensitive information from the R-Viewer application through easily
predictable temporary directories that don't appear to expire content
regularily. Included inside of these temorary directories are the unecnrypted
copies of the documents the R-Viewer application has opened in the past.

C:\Program Files\RemoteDocs\Viewer\tmp\31325193(1)   <-- First opening
C:\Program Files\RemoteDocs\Viewer\tmp\31325193(2)   <-- Second opening

Vendor Response:

RemoteDocs Engineers have verified these issues and have resolved them in
the latest product release R-Viewer 1.6.3768. RemoteDocs recommends all
customers immediately obtain the newest version of R-Viewer to protect against
these types of threats. RemoteDocs is unaware of any adverse customer impact
from these issues. There are no known publicly available exploits.


All users should upgrade to the latest version of R-Viewer 1.6.3768.

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned
the following names to these issues.  These are candidates for
inclusion in the CVE list (, which standardizes
names for security problems.


- -------Symantec Vulnerability Research Advisory Information-------

For questions about this advisory, or to report an error:

For details on Symantec's Vulnerability Reporting Policy:

Symantec Vulnerability Research Advisory Archive:

Symantec Vulnerability Research GPG Key:

- -------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:

For general information on Symantec's Product Vulnerability
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Symantec Product Advisory PGP Key:

- ---------------------------------------------------------------

Copyright (c) 2007 by Symantec Corp.
Permission to redistribute this alert electronically is granted
as long as it is not edited in any way unless authorized by
Symantec Consulting Services. Reprinting the whole or part of
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The information in the advisory is believed to be accurate at the
time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS
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Neither the author nor the publisher accepts any liability for any
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