TPTI-09-06: Microsoft Windows Workstation Service NetrGetJoinInformation
Heap Corruption Vulnerability
http://dvlabs.tippingpoint.com/advisory/TPTI-09-06
August 11, 2009

-- CVE ID:
CVE-2009-1544

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Windows Server 2008
Microsoft Windows Vista
Microsoft Windows Server 2003
Microsoft Windows XP SP3

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 8386.
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 Microsoft Windows. Valid user credentials
are required to exploit this vulnerability.

The specific flaw exists in the Workstation RPC Service. When handling
the arguments for the NetrGetJoinInformation function, memory is
improperly freed and can lead to remote code execution. Successful
exploitation can lead to a remote system compromise under SYSTEM
credentials.

-- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://www.microsoft.com/technet/security/bulletin/MS09-041.mspx

-- Disclosure Timeline:
2009-05-11 - Vulnerability reported to vendor
2009-08-11 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Cody Pierce, TippingPoint DVLabs