Microsoft Internet Explorer up to 6 VML Vector Markup Language fill memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer up to 6 and classified as critical. Affected by this vulnerability is the function fill of the component VML Vector Markup Language Handler. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2006-4868. The attack can be launched remotely. Moreover, an exploit is present. Disabling the affected component is suggested.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer up to 6 (Web Browser) and classified as critical. Affected by this issue is the function fill of the component VML Vector Markup Language Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the Vector Graphics Rendering engine (vgx.dll), as used in Microsoft Outlook and Internet Explorer 6.0 on Windows XP SP2, and possibly other versions, allows remote attackers to execute arbitrary code via a Vector Markup Language (VML) file with a long fill parameter within a rect tag.

The weakness was disclosed 09/19/2006 by Eric Sites with Sunbelt Software as MS06-055 (Website). The advisory is shared for download at sunbeltblog.blogspot.com. The public release happened without coordination with the vendor. This vulnerability is handled as CVE-2006-4868 since 09/19/2006. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known.

A public exploit has been developed by jamikazu and been published immediately after the advisory. The exploit is available at downloads.securityfocus.com. It is declared as attacked. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 22449 (MS06-055: Vulnerability in Vector Markup Language Could Allow Remote Code Execution (925486)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90351 (Vulnerability in Vector Markup Language Could Allow Remote Code Execution (MS06-055)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 8416. In this case the pattern |3A|fill is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4715.

The vulnerability is also documented in the databases at X-Force (29004), Exploit-DB (2425), Zero-Day.cz (120), Tenable (22449) and SecurityFocus (BID 20096†). blog.washingtonpost.com is providing further details. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: jamikazu
Download: 🔍

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Price Prediction: 🔍
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Nessus ID: 22449
Nessus Name: MS06-055: Vulnerability in Vector Markup Language Could Allow Remote Code Execution (925486)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Saint ID: exploit_info/ie_vml_rect_fill
Saint Name: Internet Explorer VML rect fill buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ms06_055_vml_method.rb
MetaSploit Name: MS06-055 Microsoft Internet Explorer VML Fill Method Code Execution
MetaSploit File: 🔍

Exploit-DB: 🔍
Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Disable
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Patch: windowsupdate.microsoft.com

Snort ID: 8416
Snort Message: WEB-CLIENT VML fill method overflow attempt
Snort Pattern: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
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Timelineinfo

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09/24/2006 +4 days 🔍
09/26/2006 +2 days 🔍
09/26/2006 +0 days 🔍
06/16/2025 +6838 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS06-055
Researcher: Eric Sites
Organization: Sunbelt Software
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-4868 (🔍)
GCVE (CVE): GCVE-0-2006-4868
GCVE (VulDB): GCVE-100-2552

OVAL: 🔍

CERT: 🔍
X-Force: 29004 - Microsoft Internet Explorer VML buffer overflow, High Risk
SecurityFocus: 20096 - Microsoft Internet Explorer Vector Markup Language Buffer Overflow Vulnerability
Secunia: 21989 - Microsoft Vector Graphics Rendering Library Buffer Overflow, Extremely Critical
OSVDB: 28946 - Microsoft IE Vector Markup Language (VML) Arbitrary Code Execution
SecurityTracker: 1016879 - Microsoft Internet Explorer VML Buffer Overflow Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 12764 - [MS06-055] Microsoft Internet Explorer VML File Buffer Overflow, Medium
Vupen: ADV-2006-3679

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 09/19/2006 19:08
Updated: 06/16/2025 02:24
Changes: 09/19/2006 19:08 (120), 04/07/2017 12:01 (6), 03/13/2021 13:57 (2), 07/21/2024 19:24 (22), 01/14/2025 07:08 (1), 06/16/2025 02:24 (4)
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Cache ID: 216::103

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