Vulnerability: MS09-072 - Cumulative Security Update for Internet Explorer (976325)

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	Details
Vulnerability name/brief description	MS09-072 - Cumulative Security Update for Internet Explorer (976325)
CVE/CAN name	CVE-2009-2493, CVE-2009-3671, CVE-2009-3672, CVE-2009-3673, CVE-2009-3674
Vendor threat level	Critical
SophosLabs threat level	High
Solution	MS09-072
Vendor description	This security update resolves four privately reported vulnerabilities and one publicly disclosed vulnerability in Internet Explorer. The vulnerabilities could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. An ActiveX control built with Microsoft Active Template Library (ATL) headers could also allow remote code execution.
SophosLabs comments	Of the five vulnerabilities fixed in this bulletin it is arguably CVE-2009-3672 that is of the most importance since it is the only one that has been publicly disclosed.
SophosLabs testing result	N/A
Currently known exploits	Mal/JSShell-B - CVE-2009-3672
First sample seen	23rd November 2009
Discovery date	8th December 2009
Affected software	Internet Explorer 5.01 Service Pack 4 Internet Explorer 6 Internet Explorer 6 Service Pack 1 Internet Explorer 7 Internet Explorer 8
References	http://www.microsoft.com/technet/security/Bulletin/MS09-072.mspx http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2493 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3671 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3672 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3673 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3674
Credits	Microsoft MAPP
Revisions	8th December 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:
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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:
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Vendor Description:
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SophosLabs Comments:
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SophosLabs Testing Result:
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Currently Known Exploits:
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First Sample Seen:
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Discovery Date:
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Affected Software:
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