TITLE:
Internet Explorer Multiple Event Handlers Denial of Service Weakness

SECUNIA ADVISORY ID:
SA19269

VERIFY ADVISORY:
http://secunia.com/advisories/19269/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
>From remote

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

DESCRIPTION:
Michal Zalewski has discovered a weakness in Internet Explorer, which
can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an array boundary error in the
handling of HTML tags with multiple event handlers. This can be
exploited to crash a vulnerable browser via a HTML tag with 94 or
more event handlers.

The weakness has been confirmed on a fully patched system with
Internet Explorer 6.0 and Microsoft Windows XP SP2.

SOLUTION:
Do not visit untrusted web sites.

PROVIDED AND/OR DISCOVERED BY:
Michal Zalewski

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