Advisory Details

June 10th, 2009

Microsoft Internet Explorer Concurrent Ajax Request Memory Corruption Vulnerability

ZDI-09-037
ZDI-CAN-426

CVE ID CVE-2009-1528
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
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 exist due to improper AJAX request synchronization in Internet Explorer. When many asynchronous XMLHttpRequest are running concurrently memory corruption can occur that could be remotely exploited by a malicious attacker.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS09-019.mspx
DISCLOSURE TIMELINE
  • 2009-01-15 - Vulnerability reported to vendor
  • 2009-06-10 - Coordinated public release of advisory
CREDIT Anonymous
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