ZDI-07-027: Microsoft Internet Explorer Table Column Deletion Memory Corruption Vulnerability


ZDI-07-027: Microsoft Internet Explorer Table Column Deletion Memory Corruption Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-07-027.html May 8, 2007 -- CVE ID: CVE-2007-0944 -- Affected Vendor: Microsoft -- Affected Products: Internet Explorer 5 Internet Explorer 6 -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since May 8, 2007 by Digital Vaccine protection filter ID 5236. For further product information on the TippingPoint IPS: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote 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 flaw exists in the CTableCol::OnPropertyChange() method. When a named table row in HTML contains a named table column, then calls the deleteCell() JavaScript method, any property of the table column, existing or not, accessed after the deletion takes place will trigger an exploitable memory corruption. -- Vendor Response: Microsoft has issued an update to correct this vulnerability. More details can be found at: http://www.microsoft.com/technet/security/bulletin/ms07-027.mspx -- Disclosure Timeline: 2006.10.03 - Vulnerability reported to vendor 2007.05.08 - Digital Vaccine released to TippingPoint customers 2007.05.08 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by an anonymous researcher. -- About the Zero Day Initiative (ZDI): Established by TippingPoint, a division of 3Com, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.