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iDefense Security Advisory 05.14.09: Multiple Vendor Outside In Multiple Integer Overflow Vulnerabilities
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iDefense Security Advisory 05.14.09
May 14, 2009
Oracle Corp.'s Outside In Technology is a document conversion engine
supporting a large number of binary file formats. Prior to Oracle's
acquisition, the software was maintained by Stellent Inc. The software
appears to have originated from "QuickView" for Windows 98, but later
spun off. It is used by various software packages, one of which is
Motorola Inc.'s Good Mobile Messaging Server. For more information,
visit the vendors' sites at the URLs provided below.
Remote exploitation of multiple integer overflow vulnerabilities in
Oracle Corp.'s Outside In Technology, as included in various vendors'
software distributions, allows attacker to execute arbitrary code.
These vulnerabilities exist in the handling of an optional data stream
stored within various files. Both issues are integer overflows, and are
within the same function.
Within the vulnerable function, an integer value is read from the
Microsoft Office file. This value is later used in several arithmetic
integer calculations. Since no validation is performed, integer
overflows can occur. The result is the allocation of a buffer that is
too small to hold the data that is subsequently read from the file. A
heap buffer overflow occurs, leading to an exploitable condition.
Exploitation of these vulnerabilities allows attackers to execute
arbitrary code. In order to exploit these vulnerabilities, the attacker
must somehow supply a malformed document to an application that will
process the document with Outside In Technology. Likewise, the
privileges gained will also depend on the software using the library.
In the case of Good Mobile Messaging Server, an attacker can send an
electronic mail message with a specially crafted Office document
attachment to a user. When the user chooses to view the document, the
vulnerable condition will be triggered. Upon successful exploitation,
the attacker will gain the privileges of the "GoodAdmin" user. This is
a special user account which, in some configurations, may be a member
of the "Administrator" group. Regardless of the user's "Administrator"
status, the user will always have full privileges to "Read" and "Send
As" all users on the Microsoft Exchange server. This could allow an
attacker to conduct further social engineering attacks.
Other software packages using Outside In were not investigated.
iDefense confirmed the existence of these vulnerabilities using the
follow versions of Outside In on Windows Server 2003. Multiple modules
were confirmed to contain the vulnerable code; vsmpp, vspp97, vsvisio,
vsw6, vsw97, vsxl5. Other modules may also be affected.
Additionally the following versions of Good Mobile Messaging Server for
Exchange ship with vulnerable versions of the affected modules.
All versions of Outside In, including versions for operating systems
other than Windows, are assumed to be vulnerable. Additionally, all
software that includes or uses Outside In is assumed to be vulnerable.
Earlier versions, including those branded with other names, are
vulnerable as well.
In order to prevent exploitation of this vulnerability, iDefense
recommends using file system access control lists (ACLs) to prevent
reading the affected modules.
For Good Mobile Messaging Server, Good Software recommends deleting the
GdFileConv.exe file and restarting the Messaging Server.
VI. VENDOR RESPONSE
Oracle has released a patch which addresses this issue. For more
information, consult their advisory at the following URL:
Good Technology has released a patch which addresses this issue. For
more information, consult their advisory at the following URL:
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2009-1011 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
01/30/2009 - GoodLink contact identified
01/30/2009 - Security contact research begins
02/05/2009 - Oracle contact identified
02/09/2009 - Initial Oracle Reply
02/09/2009 - Initial Vendor Notification
02/10/2009 - Initial GoodLink Reply
02/11/2009 - Oracle validation
02/16/2009 - GoodLink customer alert sent
02/16/2009 - GoodLink validation
02/19/2009 - Oracle requests PoC
02/19/2009 - PoC sent to Oracle
02/25/2009 - GoodLink status update
02/27/2009 - Oracle status update
03/06/2009 - GoodLink status update
04/14/2009 - Oracle patch released
05/13/2009 - CVE Corelation requested from Oracle
05/14/2009 - Coordinated Public Disclosure
05/14/2009 - GoodLink ready for disclosure coordinated with iDefense
This vulnerability was discovered by Joshua J. Drake, iDefense Labs.
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X. LEGAL NOTICES
Copyright © 2009 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@xxxxxxxxxxxx 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.
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