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TITLE:
Internet Explorer Three Vulnerabilities

SECUNIA ADVISORY ID:
SA16373

VERIFY ADVISORY:
http://secunia.com/advisories/16373/

CRITICAL:
Highly critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 6.x
http://secunia.com/product/11/
Microsoft Internet Explorer 5.5
http://secunia.com/product/10/
Microsoft Internet Explorer 5.01
http://secunia.com/product/9/

DESCRIPTION:
Three vulnerabilities have been reported in Internet Explorer, which
can be exploited by malicious people to conduct cross-site scripting
attacks or compromise a user's system.

1) A memory corruption error within the processing of JPEG images can
be exploited to execute arbitrary code by tricking a user into e.g.
visiting a web site or view an HTML e-mail containing a specially
crafted JPEG image.

2) A validation error during the interpretation of certain URLs when
browsing from a web site to a web folder view using WebDAV can be
exploited to execute arbitrary script code in another domain (e.g. on
the user's system in the "Local Machine" security zone).

3) An error in the way COM objects are instantiated as ActiveX
controls can be exploited to corrupt system memory and allows
execution of arbitrary code on a user's system when e.g. a malicious
web site is visited.

SOLUTION:
Apply patches.

Internet Explorer 5.01 (requires SP4) on Windows 2000 SP4:
http://www.microsoft.com/downloads/details.aspx?FamilyId=194E0EE7-919C-4A8B-AD8D-01A4FE771942

Internet Explorer 6 (requires SP1) on Windows 2000 SP4 or Windows XP
SP1:
http://www.microsoft.com/downloads/details.aspx?FamilyId=68300B15-1CF9-45FB-875E-2EF6D2FBC9ED

Internet Explorer 6 for Windows XP SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=648B6F0E-1695-44E5-826A-43406DF4858E

Internet Explorer 6 for Windows Server 2003 (optionally with SP1):
http://www.microsoft.com/downloads/details.aspx?FamilyId=0B96EC3-E954-423A-9AB0-5712B9F14637

Internet Explorer 6 for Windows Server 2003 for Itanium-based systems
(optionally with SP1):
http://www.microsoft.com/downloads/details.aspx?FamilyId=C24D3738-213A-41B8-84A3-2842B34D7B10

Internet Explorer 6 for Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyId=F2D544E7-33F5-4A65-A574-15495B05B883

Internet Explorer 6 for Microsoft Windows XP Professional x64
Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyId=1181BC67-0A1D-4A06-99AC-5B2BC6DFE0F6

Internet Explorer 5.5 (requires SP2) on Windows ME:
Patches are available from the Windows Update web site.

NOTE: See vendor advisory for Slovenian and Slovakian patches for
Windows ME.

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

NOTE: See vendor advisory for Slovenian and Slovakian patches for
Windows ME.

PROVIDED AND/OR DISCOVERED BY:
3) The vendor credits the following people:
* NSFOCUS Security Team
* Bernhard Mueller and Martin Eiszner, SEC Consult.

ORIGINAL ADVISORY:
MS05-038 (KB896727):
http://www.microsoft.com/technet/security/Bulletin/MS05-038.mspx

OTHER REFERENCES:
Known problems when installing the cumulative update:
http://support.microsoft.com/kb/896727

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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