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Vulnerability Note VU#174089

Oracle Siebel Option Pack for IE ActiveX control memory initialization vulnerability

Overview

The Oracle Siebel Option Pack for IE ActiveX control fails to properly initialize memory, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

I. Description

Siebel Option Pack for IE is an ActiveX control that is provided by Oracle Siebel Customer Relationship Management (CRM) software. The Siebel Option Pack for IE ActiveX control is provided by a number of different DLLs with file names beginning with ieop_aom. This ActiveX control fails to properly initialize memory that is used by the NewBusObj() method.

II. Impact

By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user.

III. Solution

Apply an update

This issue is addressed in the Oracle CPU for October 2010. Note that Oracle states that "None of these vulnerabilities may be remotely exploitable without authentication, i.e., none may be exploited over a network without the need for a username and password." This statement is incorrect. No authentication is required to exploit this vulnerability.

Disable the Siebel Option Pack for IE ActiveX control in Internet Explorer

The vulnerable ActiveX controls can be disabled in Internet Explorer by setting the kill bit for the following CLSIDs. Note that this list may not be complete. The vulnerable control may be available as other CLSIDs.

{07070bfd-c501-4899-934d-0b96a9f70795}

{26bac093-997c-4084-bad6-c35f5d67ea99}

{631F0C94-C02F-40AC-A31B-DDC39731FC81}

{68cdb19a-6305-4589-8c35-41e3502cd451}

{81a81dd2-a261-442a-b9b1-df10a2542020}

{45874228-a445-40dc-962b-ec15559b1741}

More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{07070bfd-c501-4899-934d-0b96a9f70795}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{07070bfd-c501-4899-934d-0b96a9f70795}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{26bac093-997c-4084-bad6-c35f5d67ea99}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{26bac093-997c-4084-bad6-c35f5d67ea99}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{45874228-a445-40dc-962b-ec15559b1741}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{45874228-a445-40dc-962b-ec15559b1741}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{631F0C94-C02F-40AC-A31B-DDC39731FC81}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{631F0C94-C02F-40AC-A31B-DDC39731FC81}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{68cdb19a-6305-4589-8c35-41e3502cd451}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{68cdb19a-6305-4589-8c35-41e3502cd451}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{81a81dd2-a261-442a-b9b1-df10a2542020}]

"Compatibility Flags"=dword:00000400

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{81a81dd2-a261-442a-b9b1-df10a2542020}]

"Compatibility Flags"=dword:00000400

Disable ActiveX

Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the Securing Your Web Browser document.�

Vendor Information

Vendor	Status	Date Notified	Date Updated
Oracle Corporation	Affected	2006-10-20	2010-10-14

References

http://www.cert.org/tech_tips/securing_browser/
http://secunia.com/advisories/40804/
http://support.microsoft.com/kb/240797

Credit

This vulnerability was reported by Will Dormann of the CERT/CC

This document was written by Will Dormann.

Other Information

Date Public:	2010-08-05
Date First Published:	2010-08-05
Date Last Updated:	2010-10-19
CERT Advisory:
CVE-ID(s):	CVE-2009-3737
NVD-ID(s):	CVE-2009-3737
US-CERT Technical Alerts:
Severity Metric:	5.70
Document Revision:	11

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