ZDI-11-235: TrendMicro Control Manager CASProcessor.exe BLOB Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-235

July 12, 2011

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
Trend Micro

-- Affected Products:
Trend Micro Control Manager

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11468. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Trend Micro Control Manager. Authentication
is not required to exploit this vulnerability.

The specific flaw exists within En_Utility.dll. A module called from
CASProcessor.exe running on TCP port 20801. A specially crafted packet
with malformed BLOB encrypted data, is handled by HandleMcpRequest(),
and contains instructions that will allow for an integer wrap, leading
to a heap overflow. An attacker can leverage this vulnerability to
execute arbitrary code under the context of the SYSTEM.

-- Vendor Response:
Trend Micro has issued an update to correct this vulnerability. More
details can be found at:
http://esupport.trendmicro.com/solution/en-us/1058292.aspx

-- Disclosure Timeline:
2011-04-07 - Vulnerability reported to vendor
2011-07-12 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Luigi Auriemma

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