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TITLE:
Microsoft Windows Explorer Web View Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA15017

VERIFY ADVISORY:
http://secunia.com/advisories/15017/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

OPERATING SYSTEM:
Microsoft Windows 2000 Server
http://secunia.com/product/20/
Microsoft Windows 2000 Professional
http://secunia.com/product/1/
Microsoft Windows 2000 Datacenter Server
http://secunia.com/product/1177/
Microsoft Windows 2000 Advanced Server
http://secunia.com/product/21/

DESCRIPTION:
GreyMagic has discovered a vulnerability in Windows, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an input validation error in the
Web View library "webvw.dll" where certain metadata for files isn't
properly sanitised before being used. This can be exploited to
execute arbitrary HTML and script code in a local context with
escalated privileges by e.g. tricking a user into selecting a
malicious word document with a specially crafted author name in
Windows Explorer.

Successful exploitation allows execution of arbitrary code.

The vulnerability has been confirmed on a fully patched Microsoft
Windows 2000 SP4 system.

SOLUTION:
Disable Web content in folders:
"Tools" -> "Folder Options..." -> "General" --> "Use Windows classic
folders"

Microsoft Windows XP is not affected.

PROVIDED AND/OR DISCOVERED BY:
GreyMagic

ORIGINAL ADVISORY:
http://www.greymagic.com/security/advisories/gm015-ie/

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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.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


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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