Advisory Details

August 22nd, 2012

Microsoft Internet Explorer MSADO CacheSize Remote Code Execution Vulnerability

ZDI-12-158
ZDI-CAN-1521

CVE ID CVE-2012-1891
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer 9
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10761. 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 or open a malicious file.

The specific flaw exists within the MSADO component. When handling the a user specified CacheSize property the process uses this value to calculate the 'real' cache size. This value is used without proper validation. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser. This bug is a failed fix for CVE-2011-0027 / http://www.zerodayinitiative.com/advisories/ZDI-11-002/

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://technet.microsoft.com/en-us/security/bulletin/ms12-045
DISCLOSURE TIMELINE
  • 2012-02-13 - Vulnerability reported to vendor
  • 2012-08-22 - Coordinated public release of advisory
CREDIT Anonymous
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