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TITLE:
Internet Explorer Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA23769

VERIFY ADVISORY:
http://secunia.com/advisories/23769/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 7.x
http://secunia.com/product/12366/
Microsoft Internet Explorer 5.01
http://secunia.com/product/9/
Microsoft Internet Explorer 6.x
http://secunia.com/product/11/

DESCRIPTION:
Multiple vulnerabilities have been reported in Internet Explorer,
which can be exploited by malicious people to compromise a user's
system.

1) An error within the instantiation of the chtskdic.dll COM object
not intended to be instantiated in Internet Explorer can be exploited
to corrupt memory.

2) An error in the way objects are accessed when not initiated or
already deleted can be exploited to corrupt memory via a specially
crafted web page.

3) An error when calling property methods can be exploited to corrupt
memory via a specially crafted web page.

4) Errors within the handling of HTML objects can be exploited to
corrupt memory via a specially crafted web page.

5) An error in the media service component (msauth.dll) can be
exploited to rewrite arbitrary files via a specially crafted web
page.

Successful exploitation of the vulnerabilities allows execution of
arbitrary code.

SOLUTION:
Apply patches.

Internet Explorer 5.01 SP4 on Windows 2000 SP4:
http://www.microsoft.com/downloads/details.aspx?FamilyId=67AE3381-16B2-4B34-B95C-69EE7D58B357

Internet Explorer 6 SP1 on Windows 2000 SP4:
http://www.microsoft.com/downloads/details.aspx?FamilyId=03FC8E0C-DEC5-48D1-9A34-3B639F185F7D

Internet Explorer 6 for Windows XP SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=EFC6BE04-0D6B-4639-8485-DA1525F6BC52

Internet Explorer 6 for Windows XP Professional x64 Edition
(optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=A077BE20-C379-4386-B478-80197A4A4ABC

Internet Explorer 6 for Windows Server 2003 SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=D249089D-BB8E-4B86-AB8E-18C52844ACB2

Internet Explorer 6 for Windows Server 2003 for Itanium-based systems
SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=D52C0AFD-CC3A-4A5C-B91B-E006D497BC26

Internet Explorer 6 for Windows Server 2003 x64 Edition SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=94B83BDD-2BD1-43E4-BABF-68135D253293

Internet Explorer 7 for Windows XP SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=7A778D93-9D85-4217-8CC0-5C494D954CA0

Internet Explorer 7 for Windows XP Professional x64 Edition
(optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=29938ED4-F8BB-4793-897C-966BA7F4830C

Internet Explorer 7 for Windows Server 2003 SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=0F173D60-6FD0-4C92-BB2A-A7A78707E35F

Internet Explorer 7 for Windows Server 2003 for Itanium-based systems
SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=1944BCFA-B0BC-4BD5-9089-A618EA43EA49

Internet Explorer 7 for Windows Server 2003 x64 Edition SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyId=404A48A2-5765-4AFA-94BF-E97212AA14EF

Internet Explorer 7 in Windows Vista:
http://www.microsoft.com/downloads/details.aspx?FamilyId=0C65FAD3-BAAE-46C4-B453-84CF28B15F50

Internet Explorer 7 in Windows Vista x64 Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyId=74AFEA3D-79DF-4B64-BF30-B8E5C55CAB2B

PROVIDED AND/OR DISCOVERED BY:
1) Reported by the vendor.
2) The vendor credits TippingPoint and ZDI.
3) Reported by the vendor.
4) JJ Reyes, Secunia Research.
5) cocoruder, Fortinet Security Research.

ORIGINAL ADVISORY:
MS07-027 (KB931768):
http://www.microsoft.com/technet/security/Bulletin/MS07-027.mspx

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About:
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