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Microsoft Internet Explorer CSS Class Ordering Memory Corruption
(MS06-042)
------------------------------------------------------------------------
SUMMARY
Microsoft Internet Explorer's CSS handling allows remote attackers to
cause the product to corrupt the memory used by the application, which can
escalate to a code execution vulnerability.
DETAILS
Affected Products:
* Internet Explorer 6 All Versions
* Internet Explorer 5 SP4
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Microsoft Internet Explorer. User interaction
is required to exploit this vulnerability in that the target must visit a
malicious page.
The specific vulnerability exists due to improper handling of CSS class
values. Accessing a specially crafted CSS element via
document.getElementByID causes a memory corruption eventually leading to
code execution.
Vendor Response:
Microsoft has issued an update to correct this vulnerability. More details
can be found at:
<http://www.microsoft.com/technet/security/bulletin/MS06-042.mspx>
http://www.microsoft.com/technet/security/bulletin/MS06-042.mspx
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3450>
CVE-2006-3450
Disclosure Timeline:
2006.06.14 - Vulnerability reported to vendor
2006.08.08 - Digital Vaccine released to TippingPoint customers
2006.08.08 - Coordinated public release of advisory
ADDITIONAL INFORMATION
The information has been provided by Sam Thomas.
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-06-027.html>
http://www.zerodayinitiative.com/advisories/ZDI-06-027.html
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