Advisory Details

December 12th, 2006

Microsoft Internet Explorer normalize() Function Memory Corruption Vulnerability

ZDI-06-048
ZDI-CAN-072

CVE ID CVE-2006-5581
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer 6
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4163, 3133, 3377. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

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 the normalize() function. When called in certain circumstances user controllable memory can be used to execute arbitrary code.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/Bulletin/MS06-072.mspx
DISCLOSURE TIMELINE
  • 2006-08-31 - Vulnerability reported to vendor
  • 2006-12-12 - Coordinated public release of advisory
CREDIT Sam Thomas
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