Microsoft Internet Explorer 6/7 Layout code injection

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 6/7 (Web Browser). This issue affects an unknown functionality of the component Layout Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft Internet Explorer 6 and 7 does not properly handle objects in memory that (1) were not properly initialized or (2) are deleted, which allows remote attackers to execute arbitrary code via vectors involving a call to the getElementsByTagName method for the STYLE tag name, selection of the single element in the returned list, and a change to the outerHTML property of this element, related to Cascading Style Sheets (CSS) and mshtml.dll, aka "HTML Object Memory Corruption Vulnerability." NOTE: some of these details are obtained from third party information. NOTE: this issue was originally assigned CVE-2009-4054, but Microsoft assigned a duplicate identifier of CVE-2009-3672. CVE consumers should use this identifier instead of CVE-2009-4054.

The issue has been introduced in 03/22/2001. The weakness was released 11/23/2009 with as MS09-072 as confirmed bulletin (Technet). The advisory is shared at The public release was coordinated with Microsoft. The identification of this vulnerability is CVE-2009-3672 since 10/13/2009. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

After even before and not, there has been an exploit disclosed. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 3168 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 43064 (MS09-072: Cumulative Security Update for Internet Explorer (976325)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90570 (Microsoft Internet Explorer Cumulative Security Update (MS09-072 and KB977981)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at A possible mitigation has been published 3 weeks after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 9300.

The vulnerability is also documented in the databases at X-Force (54422) and Tenable (43064). is providing further details.








CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707

Local: No
Remote: Yes

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Access: Public
Status: Highly functional
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Nessus ID: 43064
Nessus Name: MS09-072: Cumulative Security Update for Internet Explorer (976325)
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OpenVAS ID: 800727
OpenVAS Name: MS Internet Explorer Style Object Remote Code Execution Vulnerability
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MetaSploit ID: ms09_072_style_object.rb
MetaSploit Name: MS09-072 Microsoft Internet Explorer Style getElementsByTagName Memory Corruption
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Threat Intelligenceinfo

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Recommended: Disable
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03/22/2001 🔍
10/13/2009 +3127 days 🔍
11/20/2009 +37 days 🔍
11/20/2009 +0 days 🔍
11/20/2009 +0 days 🔍
11/22/2009 +2 days 🔍
11/23/2009 +1 days 🔍
11/23/2009 +0 days 🔍
12/02/2009 +8 days 🔍
12/04/2009 +2 days 🔍
12/08/2009 +4 days 🔍
03/17/2021 +4117 days 🔍



Advisory: MS09-072
Status: Confirmed
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Coordinated: 🔍

CVE: CVE-2009-3672 (🔍)

X-Force: 54422
SecurityTracker: 1023293
Vulnerability Center: 24130 - [MS09-072] Microsoft Internet Explorer 6-7 \x27Style\x27 Object Remote Code execution or DoS Vulnerability, Critical
SecurityFocus: 37085 - Microsoft Internet Explorer 'Style' Object Remote Code Execution Vulnerability
Secunia: 37448 - Internet Explorer Multiple Vulnerabilities, Highly Critical
OSVDB: 60490 - Microsoft IE Layout STYLE Tag getElementsByTagName Method Handling Memory Corruption
Vupen: ADV-2009-3301

scip Labs:
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Created: 12/04/2009 01:24 PM
Updated: 03/17/2021 04:19 PM
Changes: 12/04/2009 01:24 PM (69), 04/07/2017 12:02 PM (35), 03/17/2021 04:11 PM (8), 03/17/2021 04:16 PM (2), 03/17/2021 04:19 PM (2)
Complete: 🔍
Cache ID: 34:3EE:40


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