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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 188.8.131.52
Operating System: Windows
Impact: Execute Arbitrary Code/Commands
CVE Names: CVE-2008-6339
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
If a computer has the vulnerable ActiveX control installed, a remote
attacker may compromise the computer if the user visits a malicious
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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
File: C:\Windows\Downloaded Program Files\DownloadManagerV2.ocx
The Java version has the following identifiers:
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
184.108.40.206 of Akamai Technologies Inc's DownloadManagerV2.ocx.
Additionally, iDefense confirmed the problem exists in version 220.127.116.11
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.
VI. VENDOR RESPONSE
Akamai has addressed this vulnerability with the release of version
18.104.22.168 of their Download Manager product. For more information, refer
to their advisory. To download the updated version, visit the following
VII. CVE INFORMATION
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
VIII. DISCLOSURE TIMELINE
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.
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X. LEGAL NOTICES
Copyright © 2008 iDefense, Inc.
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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.
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