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Microsoft Internet Explorer Multiple Vulnerabilities
Secunia Advisory: SA20595
Release Date: 2006-06-13
Last Update: 2006-06-15
Popularity: 18,384 views

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

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

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CVE reference:CVE-2006-1303
CVE-2006-2382
CVE-2006-2383
CVE-2006-2384
CVE-2006-2385


Description:
Some vulnerabilities have been reported in Internet Explorer, which can be exploited by malicious people to conduct phishing attacks and compromise a user's system.

1) A memory corruption error within the decoding of specially crafted UTF-8 encoded HTML can be exploited to execute arbitrary code when a user e.g. visits a malicious web site.

2) A memory corruption error within the DXImageTransform.Microsoft.Light ActiveX control's parameter validation can be exploited to execute arbitrary code when a user e.g. visits a malicious web site.

3) An error within the way certain COM objects, which are not meant to be instantiated in Internet Explorer, are instantiated can be exploited to execute arbitrary code when e.g. a malicious web site is visited.

4) An error allows spoofing of the information in the address bar and other parts of the trust UI, which can be exploited to conduct phishing attacks.

5) A memory corruption error in the way multipart HTML (.mht) is saved can be exploited to execute arbitrary code if a user is tricked into saving a specially crafted web page as multipart HTML.

Solution:
Apply patches.

Internet Explorer 5.01 SP4 on Windows 2000 SP4:
http://www.microsoft.com/downloads/de...=91A997DE-BAE4-4AC7-912D-79EF8ABAEF4F

Internet Explorer 6 SP1 on Windows 2000 SP4 or Windows XP SP1:
http://www.microsoft.com/downloads/de...=0EB17A41-FB43-413B-A5CC-41E1F3DEDE4F

Internet Explorer 6 for Windows XP SP2:
http://www.microsoft.com/downloads/de...=85CABE87-C4A0-4F80-BD1C-210E23FD8D81

Internet Explorer 6 for Windows Server 2003 and Windows Server 2003 SP1:
http://www.microsoft.com/downloads/de...=CCE7C875-C9A4-4C3D-A37B-946EE5E781E7

Internet Explorer 6 for Windows Server 2003 for Itanium-based systems (with or without SP1):
http://www.microsoft.com/downloads/de...=C8E4CFB6-1350-4AAE-B681-EE2ECAB41118

Internet Explorer 6 for Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=1C7D5C6D-DDCF-485D-A1E3-60E55334FD74

Internet Explorer 6 for Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=F91791AC-8185-4346-AA66-89F74D4B5EA7

Internet Explorer 6 SP1 on Windows 98, Windows 98 SE, or Windows Me:
Patches are available from the Windows Update web site.

Provided and/or discovered by:
1) Discovered by an anonymous person and reported via Zero Day Initiative.
2) The vendor credits Will Dormann, CERT/CC.
3) Discovered by an anonymous person and reported via Zero Day Initiative
The vendor also credits HD Moore, Metasploit Project.
4) The vendor credits Yorick Koster of ITsec Security Services and hoshikuzu star_dust.
5) The vendor credits John Jones of DISC, State of Kansas.

Changelog:
2006-06-15: Added links to US-CERT vulnerability notes. Added additional information from ZDI.

Original Advisory:
MS06-021 (KB916281):
http://www.microsoft.com/technet/security/Bulletin/MS06-021.mspx

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-06-017.html
http://www.zerodayinitiative.com/advisories/ZDI-06-018.html

Other References:
KB article discussing known issues when installing the update:
http://support.microsoft.com/kb/916281

US-CERT VU#136849:
http://www.kb.cert.org/vuls/id/136849

US-CERT VU#417585:
http://www.kb.cert.org/vuls/id/417585


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