File: 1970.txt

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Rule:

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Sid:
1970

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Summary:
This event is generated when an attempt is made to exploit a buffer overflow in the Remote Data Services (RDS) component of Microsoft Data Access Components (MDAC).  

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Impact:
Remote Access.  If the exploit is successful, an attacker can gain remote access to the host.

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Detailed Information:
MDAC is a set of components that facilitates database access on Windows platforms.  The RDS component provides remote access to a database through Internet Information Services (IIS).  A vulnerability exists because of incorrect string handling with the RDS interface allowing an attacker to send a malformed HTTP request that overruns onto the heap.  This may allow execution of arbitrary code on the system. 

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Affected Systems:
Windows hosts running MDAC 2.1, 2.5, 2.6

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Attack Scenarios:
An attacker can send a malformed HTTP request that is improperly validated by RDS, subsequently causing a buffer overflow.

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Ease of Attack:
Difficult.  According to the Microsoft bulletin, a heap is more difficult to exploit than a stack overflow.

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False Positives:
None Known.

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False Negatives:
None Known.

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Corrective Action:
Apply security hotfix for Q329414.


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Contributors:
Original rule written by Brian Caswell <bmc@sourcefire.com>
Sourcefire Research Team
Judy Novak <judy.novak@sourcefire.com>

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Additional References:

CVE
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1142

Foundstone
http://www.foundstone.com/knowledge/randd-advisories-display.html?id=337

Microsoft
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q329414

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