1601.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:  

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Sid:
1601

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Summary:
This event is generated when an attempt is made to read a file on a host using a well known vulnerability in htdig.

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Impact:
Severe. Unauthorized file access

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Detailed Information:
Some versions of htdig allow inclusions to be made from configuration files as a parameter to the htsearch function. Any file can be included by enclosing it in single quotes ('foo').

Using this vulnerability, any single quoted input string (`....`) is included as an index file by htsearch. This allows an attacker to read any file on the host.

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Affected Systems:
HTDig versions 3.1.1, 3.1.2, 3.1.3, 3.1.4 and 3.2.0b1

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Attack Scenarios:
A input form with a textbox named "Exclude" and http post action handled by htsearch or a url similar to http://www.foo.com/cgi-bin/htsearch?Exclude=%60/anyfile%60 can be used to access files on your host. %60 is the single quote caracter "`".

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Ease of Attack:
Simple. No exploit scripts required

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False Positives:
None known

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False Negatives:
None known

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Corrective Action:
Upgrade to the latest non-affected version of the software.

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Contributors:
Snort documentation contributed by Ueli Kistler, <[e-mail]>
Sourcefire Research Team
Brian Caswell <[e-mail]>
Nigel Houghton <[e-mail]>

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Additional References:
Bugtraq:
http://www.securityfocus.com/bid/1026

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