File: 1371.txt

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Rule:

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Sid:
1371

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Summary:
This event is generated when an attempt is made to access the message of the day (motd) via the web

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Impact:
Attempt to gain information about the system on a webserver

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Detailed Information:
This is an attempt to gain intelligence about the system hosting a webserver. The motd is used to display system information on a UNIX or Linux based system. The attacker could possibly gain information needed for other attacks on the host.

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Attack Scenarios:
The attacker can make a standard HTTP request that contains '/etc/motd' in the URI.

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Ease of Attack:
Simple HTTP request.

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False Positives:
None Known

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False Negatives:
None Known

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Corrective Action:

Webservers should not be allowed to view or execute files and binaries outside of it's designated web root or cgi-bin. This file may also be requested on a command line should the attacker gain access to the machine. Making the file read only by the superuser on the system will disallow viewing of the file by other users.
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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:


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