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Microsoft Internet Explorer "createTextRange()" Code Execution
Secunia Advisory: SA18680
Release Date: 2006-03-22
Last Update: 2006-04-11
Popularity: 154,679 views

Critical:
Extremely critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Microsoft Internet Explorer 5.01
Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 6.x

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CVE reference:CVE-2006-1359


Description:
Secunia Research has discovered a vulnerability in Microsoft Internet Explorer, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an error in the processing of the "createTextRange()" method call applied on a radio button control. This can be exploited by e.g. a malicious web site to corrupt memory in a way, which allows the program flow to be redirected to the heap.

Successful exploitation allows execution of arbitrary code.

NOTE: Exploit code is publicly available.

The vulnerability has been confirmed on a fully patched system with Internet Explorer 6.0 and Microsoft Windows XP SP2. The vulnerability has also been confirmed in Internet Explorer 7 Beta 2 Preview (January edition). Other versions may also be affected.

Solution:
Apply patches.

Internet Explorer 5.01 SP4 on Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=594E7B87-AF8F-4346-9164-596E3E5C22B1

Internet Explorer 6 SP1 on Windows 2000 SP4 or Windows XP SP1:
http://www.microsoft.com/downloads/de...=033C41E1-2B36-4696-987A-099FC57E0129

Internet Explorer 6 for Windows XP SP2:
http://www.microsoft.com/downloads/de...=F05FFB31-E6B4-4771-81F1-4ACCEBF72133

Internet Explorer 6 for Windows Server 2003 and Windows Server 2003 SP1:
http://www.microsoft.com/downloads/de...=EE566871-D217-41D3-BECC-B27FAFA00054

Internet Explorer 6 for Windows Server 2003 for Itanium-based systems and Windows Server 2003 with SP1 for Itanium-based systems:
http://www.microsoft.com/downloads/de...=E584957C-0ABE-4129-ABAF-AA2852AD62A3

Internet Explorer 6 for Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=5A1C8BE3-39EE-4937-9BD1-280FC35125C6

Internet Explorer 6 for Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=C278FE3E-620A-4BBC-868B-CA2D9EFF7AC3

Internet Explorer 6 SP1 on Windows 98, Windows 98 SE, or Windows ME:
Patches are available via the Microsoft Update Web site or the Windows Update Web site.

Provided and/or discovered by:
Andreas Sandblad, Secunia Research.

Independently reported on public mailing lists by Stelian Ene.

Changelog:
2006-03-23: Added links to US-CERT vulnerability note, Microsoft Security Response Center Blog, and Secunia Research. Updated "Solution" section.
2006-03-23: Updated advisory with information about availability of exploit code.
2006-03-24: Added link to Microsoft advisory. Added CVE reference. Added additional versions of Internet Explorer as affected.
2006-03-27: Added links to Microsoft's comments regarding recent exploitation.
2006-03-29: Added link to Microsoft's comments regarding third-party patches.
2006-04-11: Updated "Solution" section. Added link to Microsoft security bulletin.

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2006-7/

MS06-013 (KB912812):
http://www.microsoft.com/technet/security/Bulletin/MS06-013.mspx

Microsoft:
http://www.microsoft.com/technet/security/advisory/917077.mspx
http://blogs.technet.com/msrc/archive/2006/03/22/422849.aspx
http://blogs.technet.com/msrc/archive/2006/03/27/423176.aspx
http://blogs.technet.com/msrc/archive/2006/03/25/423116.aspx
http://blogs.technet.com/msrc/archive/2006/03/28/423409.aspx

Other References:
US-CERT VU#876678:
http://www.kb.cert.org/vuls/id/876678


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