| Notification Type: |
IBM Internet Security Systems Protection Alert |
| Notification Date: |
July 7, 2008 |
| Notification Version: |
1.3 |
| |
|
| Name: |
Microsoft ActiveX Snapshot Viewer for Microsoft Access RCE |
Public disclosure/
In the wild date: |
July 7, 2008 (vuln disclosure) |
| Aliases: |
Microsoft Security Advisory (955179) |
| CVE: |
CVE-2008-2463 |
| Description: |
Microsoft ActiveX Snapshot Viewer for Microsoft Access could allow a remote attacker to execute arbitrary code on the system. Targeted exploitation was reported on July 7, but X-Force has been monitoring toolkit-related mass exploitation since July 10. As of July 24, exploitation has continued to escalate. See technical description for more details. |
ISS Coverage |
| Product |
Content Version |
Proventia Network IDS
Proventia Network IPS
Proventia Network MFS
Proventia Server (Linux)
RealSecure Network
RealSecure Server Sensor |
varies, see ISS Protection below |
Proventia Desktop
Proventia Server IPS (Windows) |
varies, see ISS Protection below |
|
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* HTML_IE_ActiveX_Loader_Heap_Corruption can be customized with a tuning parameter to block the affected ActiveX control by identifying the "killbit" and blocking it. To tune your policy to block this ActiveX control, create an entry using the pam.content.clsid.activexloaderbo.blacklist parameter for every killbit associated with this issue (listed in the Microsoft Advisory).
Example:
pam.content.clsid.activexloaderbo.blacklist = F0E42D50-368C-11D0-AD81-00A0C90DC8D9
|
Detailed Description |
| Business Impact: |
Microsoft ActiveX Snapshot Viewer for Microsoft Access is installed by default with multiple versions of Microsoft Office Access. However, this ActiveX control could also be pushed down to the browser by a determined attacker if the ActiveX control is not already installed. Therefore, this vulnerability is applicable to Microsoft Internet Explorer users in general that have administrator privileges.
Compromise of machines may lead to exposure of confidential information, loss of productivity, and further compromise. An attacker would need to entice a user to click a link to trigger this vulnerability. |
| CVSS |
Base Score: |
9.3 |
| |
Access Vector: |
Network |
| Access Complexity: |
Medium |
| Authentication: |
None |
| Confidentiality Impact: |
Complete |
| Integrity Impact: |
Complete |
| Availability Impact: |
Complete |
|
|
| Adjusted Temporal Score: |
9.3 |
| |
Exploitability: |
High |
| Remediation Level: |
Workaround |
| Report Confidence: |
Confirmed |
| Affected Products: |
For a full list of affected versions, see references below. |
| Technical Description: |
Microsoft Windows ActiveX Snapshot Viewer for Microsoft Access could allow a remote attacker to download files to any location on an end-user's computer, including the start-up directory, which would result in arbitrary code execution. By persuading a victim with administrative privileges to click a link, a remote attacker could exploit this vulnerability to execute arbitrary code on the system.
IBM Managed Security Services (MSS) has observed active, toolkit-related exploitation of this vulnerability. At least one toolkit, Neosploit, has been updated with an exploit for this vulnerability, and MSS has been monitoring escalating exploitation attempts possibly related to Chinese attackers. These in-the-wild exploits have been known to drop variants of the Hupigon backdoor that is caught by many antivirus vendors. As of July 24, over 50 unique servers have been seen exploiting this vulnerability.
|
| Remediation: |
Patches were not available for this issue at the time of publication. See References for updates on patch availability.
In addition to IPS and antivirus protection, administrators should consider disabling this ActiveX control in all web browsers of systems that are under their control. Most exploit toolkits like the toolkit using an exploit for this vulnerability have been known to employ obfuscation, which may make some IPS blind to the attack. For more information on disabling this ActiveX control, see the Microsoft Advisory. |
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References |
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Revision History |
| 1.0 |
Initial publication. |
| 1.1 |
Updated signature name and CVSS score. |
| 1.2 |
Added information about active exploitation and upgraded CVSS temporal score. |
| 1.3 |
Added additional information about continued exploitation. |
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* 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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About IBM Security Systems
IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.
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