Hash: SHA1

             AUSCERT External Security Bulletin Redistribution

                          ESB-2008.0453 -- [Win]
     Akamai Download Manager Arbitrary Program Execution Vulnerability
                                2 May 2008


        AusCERT Security Bulletin Summary

Product:              Akamai Download Manager prior to
Publisher:            iDEFENSE
Operating System:     Windows
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-6339

Original Bulletin:  

Comment: This ActiveX control may be installed on computers which have
         previously downloaded software from several third party vendors
         who use Akamai's download manager.
         These include Microsoft (Vista beta downloads) and Adobe (certain
         Adobe Acrobat, After Effects and Creative Suite 3 Design and Web
         product downloads).
         If a computer has the vulnerable ActiveX control installed, a remote
         attacker may compromise the computer if the user visits a malicious
         web page.

- --------------------------BEGIN INCLUDED TEXT--------------------

iDefense Security Advisory 04.30.08
Apr 30, 2008


Akamai Download Manager is an integral component of Akamai's global
distribution service. It is used to deliver big files quickly and
reliably to users around world. It has been used by vendors such as
Symantec and Microsoft to provide downloads to the public.

Akamai provides both an ActiveX and a Java based Download Manager. If a
user uses the ActiveX control once, it will remain installed on the
users computer until manually removed. For more information, please
visit following web sites.




Remote exploitation of a design error in Akamai Technologies, Inc's
Download Manager allows attackers to execute arbitrary code in the
context of the current user.

The ActiveX control version has the following identifiers:

  Class: DownloadManager Control
  CLSID: 2AF5BD25-90C5-4EEC-88C5-B44DC2905D8B
  CLSID: FFBB3F3B-0A5A-4106-BE53-DFE1E2340CB1
  ProgId: MANAGER.DLMCtrl.1.
  File: C:\Windows\Downloaded Program Files\DownloadManagerV2.ocx

The Java version has the following identifiers:

  Class: com.akamai.dm.ui.applet.DMApplet.class
  JAR: dlm-java-

This problem specifically exists due to two undocumented object
parameters. By using these parameters, it is possible to cause Download
Manager to automatically download and execute arbitrary binaries from
attacker controlled locations.


Exploitation allows an attacker to execute arbitrary code in the context
of the user viewing a maliciously crafted web page.

In order to exploit this vulnerability, an attacker would need to
persuade, or otherwise force, a user to view a malicious web page. This
is usually accomplished by getting the targeted user to click a link in
a form of electronic communication such as e-mail or instant messaging.

While the attack is happening, the Download Manager user interface is
displayed. However, in a normal attack scenario there is insufficient
time to cancel the download before exploitation occurs.


iDefense confirmed the existence of this vulnerability using version of Akamai Technologies Inc's DownloadManagerV2.ocx.
Additionally, iDefense confirmed the problem exists in version
of the Download Manager Java Applet. All versions prior to the fixed
version are suspected to be vulnerable.


Setting kill-bits for the associated CLSIDs will prevent the ActiveX
control from being loaded within Internet Explorer, thereby preventing

Disabling Java will prevent exploitation using the Java Applet version.


Akamai has addressed this vulnerability with the release of version of their Download Manager product. For more information, refer
to their advisory. To download the updated version, visit the following



The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-6339 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.


12/06/2007  Initial vendor notification
12/06/2007  Initial vendor response
04/30/2008  Public disclosure


This vulnerability was reported to iDefense by Peter Vreugdenhil.

Get paid for vulnerability research

Free tools, research and upcoming events


Copyright © 2008 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.

Disclaimer: 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 condition.
 There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:


Australian Computer Emergency Response Team
The University of Queensland
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.

Comment: http://www.auscert.org.au/render.html?it=1967