File: 1022.txt

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Note rule content has been altered for this rule.  Don't know if we should say so in documentation.
Rule:

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Sid:
1022

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Summary:
This event is generated when an attempt is made to execute a shell command possibly associated with an exploit with the Microsoft Jet database engine. 

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Impact:
Remote access.  This attack may permit the execution of arbitrary commands on the vulnerable server.

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Detailed Information:
Microsoft Jet database engine facilitates the addition, modification, deletion, and search of database data.  Jet may be used as a backend for web applications.  It allows the use of embedded Visual Basic for Application expressions in SQL strings.  A vulnerability associated with inadequate filtering of user input allows an attacker to execute code on the vulnerable server by supplying a command delimited by "|" characters.

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Affected Systems:
Jet 3.5, 3.51

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Attack Scenarios:
An attacker can craft a special URL to execute arbitrary commands on a vulnerable server.

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Ease of Attack:
Simple.  Exploit code is freely available.

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False Positives:
None Known.

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False Negatives:
None Known.

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Corrective Action:
Disable Jet ODBC drivers if they are not required.

Upgrade to Jet 4.0.
 
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Contributors:
Original rule writer unknown
Modified by Brian Caswell <bmc@sourcefire.com>
Sourcefire Research Team
Judy Novak <judy.novak@sourcefire.com>

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Additional References:

Microsoft
http://www.microsoft.com/technet/security/bulletin/ms99-030.asp

Bugtraq:
http://www.securityfocus.com/bid/286


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