Vulnerability: MS09-055 - Critical Cumulative Security Update of ActiveX Kill Bits (973525)
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| Details | |
|---|---|
| Vulnerability name/brief description | MS09-055 - Critical Cumulative Security Update of ActiveX Kill Bits (973525) |
| CVE/CAN name | CVE-2009-2493 |
| Vendor threat level | Critical |
| SophosLabs threat level | Medium |
| Solution | |
| Vendor description | This security update addresses a privately reported vulnerability that is common to multiple ActiveX controls and is currently being exploited. The vulnerability that affects ActiveX controls that were compiled using the vulnerable version of the Microsoft Active Template Library (ATL) could allow remote code execution if a user views a specially crafted Web page with Internet Explorer, instantiating the ActiveX control. |
| SophosLabs comments | This update is related to MS09-034 which was released out-of-band due to known exploitation. Although we do not know of CVE-2009-2493 being actively exploited by malware we strongly advise users to install this update as soon as possible. |
| SophosLabs testing result | N/A |
| Currently known exploits | At the time of writing SophosLabs have not observed any malware attempting to exploit this vulnerability. Should this situation change samples will be analyzed and we will take action as necessary. |
| First sample seen | N/A |
| Discovery date | 13 October 2009 |
| Affected software | Microsoft Windows 2000 Service Pack 4 *Server Core installation not affected. |
| References | http://www.microsoft.com/technet/security/bulletin/MS09-055.mspx |
| Credits | Microsoft MAPP |
| Revisions | 14 October 2009 - Initial analysis written |
Explanation of terms
Vulnerability Name/Brief Description:
Vendor identifier plus a brief description of the type of attack.
CVE/CAN Name:
Currently assigned CVE name. If a CVE name doesn't exist the CAN name will be used until a CVE has been assigned.
Vendor Threat Level:
Threat level assigned by the vendor
SophosLabs Threat Level:
Threat level assigned by SophosLabs
- LOW RISK - There is little chance of this vulnerability being actively exploited by malware.
- MEDIUM RISK - There is a possibility of this vulnerability being actively exploited by malware.
- HIGH RISK - There is a strong possibility of this vulnerability being actively exploited by malware.
- CRITICAL RISK - This vulnerability will almost certainly be actively exploited by malware.
Solution:
Vendor-supplied Patch identifier and recommended solution, or workaround if applicable.
Vendor Description:
Summary of the cause and potential effect of the vulnerability provided by the vendor.
SophosLabs Comments:
SophosLabs' opinions and observations of the vulnerability in question.
SophosLabs Testing Result:
Details of completed lab testing, if applicable. Please note that the lab test environment may differ significantly from user environments.
Currently Known Exploits:
List of identities for known exploits, if applicable.
First Sample Seen:
Date of the first sample seen by SophosLabs.
Discovery Date:
Date of the earliest known publically disclosed advisory.
Affected Software:
Vulnerable platforms and software versions.
If you need more information or guidance, then please contact technical support.
- Article ID: 64675
- Created: 14 Oct 2009
- Last updated: 14 Oct 2009
