[SA19738] Internet Explorer "mhtml:" Redirection Disclosure of Sensitive Information

TITLE:
Internet Explorer "mhtml:" Redirection Disclosure of Sensitive
Information

SECUNIA ADVISORY ID:
SA19738

VERIFY ADVISORY:
http://secunia.com/advisories/19738/

CRITICAL:
Less critical

IMPACT:
Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 6.x
http://secunia.com/product/11/

DESCRIPTION:
codedreamer has discovered a vulnerability in Internet Explorer,
which can be exploited by malicious people to disclose potentially
sensitive information.

The vulnerability is caused due to an error in the handling of
redirections for URLs with the "mhtml:" URI handler. This can be
exploited to access documents served from another web site.

Secunia has constructed a test, which is available at:
http://secunia.com/Internet_Explorer_Arbitrary_Content_Disclosure_Vulnerability_Test/

The vulnerability has been confirmed on a fully patched system with
Internet Explorer 6.0 and Microsoft Windows XP SP2. Other versions
may also be affected.

SOLUTION:
Disable active scripting support.

PROVIDED AND/OR DISCOVERED BY:
codedreamer

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
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use those supplied by the vendor.