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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0496
          IBM Lotus Quickr 8.2 for Domino ActiveX control buffer
                          overflow vulnerability
                                25 May 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Lotus Quickr for Domino
Publisher:         IBM
Operating System:  AIX
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-2176  

Original Bulletin: 
   http://www-304.ibm.com/support/docview.wss?uid=swg21596191

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Security Bulletin: IBM Lotus Quickr 8.2 for Domino ActiveX control buffer
overflow vulnerability (CVE-2012-2176)

Technote (troubleshooting)

Problem

A security vulnerability exists in the Lotus Quickr for Domino ActiveX control
shipped by Lotus Quickr for Domino. This vulnerability could allow remote
attackers to execute arbitrary code on installations of Lotus Quickr for Domino
when the control is invoked as ActiveX by Microsoft Internet Explorer.

Resolving the problem

VULNERABILITY DETAILS:

CVE IDs: CVE-2012-2176

DESCRIPTION: It is possible for an attacker to compromise the qp2.cab ActiveX
control used within Lotus Quickr for Domino to remotely execute arbitrary code
by instantiating this control from Microsoft Internet Explorer. For a remote
attacker to exploit this vulnerability, the following must be accomplished:

1. The user must have Lotus Quickr for Domino installed on the machine.
Important Note: Continuous use of Lotus Quickr for Domino is not required; the
vulnerability may be exploited against the ActiveX control regardless of the
use of the product.

2. Attacker needs to create malicious code that would exploit the ActiveX
control. This code could be part of an attachment by means of e-mail or a Web
page.

3. User must be persuaded to execute the attachment or follow a Web site link
that contains the malicious code via the Microsoft Internet Explorer Web
browser.

4. If the malicious website is running within Internet Explorer's Internet
Zone, the user must typically authorize the ActiveX pop-up dialog before it
could be used.

As of May 23, 2012, IBM has not received any reports of customer issues related
to this security vulnerability.

CVSS:
Using the Common Vulnerability Scoring System (CVSS) v2, the security ratings
for these issues are:

CVSS Base Score: 9.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/75322 for the
current score.
CVSS Environmental Score: Undefined
CVSS String: (AV:N/AC:M/Au:N/C:C/I:C/A:C)

AFFECTED PLATFORMS:
Lotus Quickr 8.2 for Domino


REMEDIATION:

Fix(es):

Lotus Quickr for Domino Hot Fix 8.2.0.27-002a contains the fix for this issue.
It is available by opening a service request with IBM Support. Also, the fix will
be included in all future public postings of Lotus Quickr for Domino fixes for
8.2 on IBM Fix Central.

Lotus Quickr for Domino Support:
http://www.ibm.com/support/entry/portal/overview/software/lotus/lotus_quickr_for_domino

Workaround:

Disable the use of the vulnerable ActiveX control within Internet Explorer.

Note: This solution contains information about modifying the Microsoft
operating system registry. Before making any modifications with the Microsoft
Registry Editor, it is strongly recommended that you make a backup of the
existing registry. For more information about how to back up the registry refer
to Microsoft Knowledge Base article 256986.

The vulnerable ActiveX control can be disabled in Internet Explorer by manually
setting the kill bit. Complete the following steps to set the kill bit on the
machine where Quickr for Domino is installed.

1. Start the Microsoft Windows Registry Editor (regedit).

2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveXCompatibility

3. Add a new Key:
{05D96F71-87C6-11d3-9BE4-00902742D6E0}

4. Select that Key and create a new DWORD value named:
Compatibility Flags

5. Set the Compatibility Flags value to:
0x00000400

6. Exit the Registry Editor.

7. Restart Internet Explorer.

Mitigation(s):
None known. Apply the workaround.

References:

Complete CVSS Guide
On-line Calculator V2
CVE-2012-2176
IBM X-Force Database

Related Information:

IBM Product Security Incident Response Program 

Acknowledgement: This vulnerability was reported to IBM by the TippingPoint
Zero Day Initiative (ZDI) and discovered by a third-party researcher working
with ZDI.

Change History:
23 May 2012?	Initial Publication?

*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this document.

Note: According to the Forum of Incident Response and Security Teams (FIRST),
the Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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