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Rule:
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Sid:
1042
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Summary:
This event is generated when an attempt is made to craft a URL containing the text 'Translate: f' in an attempt to view file source code.
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Impact:
Intelligence gathering. This attack may permit disclosure of the source code of files not normally available for viewing.
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Detailed Information:
Microsoft Internet Information Services (IIS) 5.0 contains scripting engines to support various advanced files types such as .ASP and .HTR files. This permits the execution of server-side processing. IIS determines which scripting engine is appropriate to use depending on the file extension. If an attacker crafts a URL request ending in 'Translate: f' and followed by a slash '/', IIS fails to send the file to the appropriate scripting engine for processing. Instead, it returns the source code of the referenced file to the browser.
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Affected Systems:
Microsoft IIS 5.0
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Attack Scenarios:
An attacker can craft a URL to include the 'Translate: f' and followed by a '/' to disclose source code on the vulnerable server.
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Ease of Attack:
Simple. Attack scripts are freely available.
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False Positives:
Some Microsoft applications make use of the 'Translate: f' header and
may cause this rule to generate an event. These include applications that use WebDAV
for publishing content on a webserver such as Microsoft Outlook Web Access (OWA)
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False Negatives:
None Known.
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Corrective Action:
Apply the appropriate vendor supplied patch.
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Contributors:
Original rule writer kinch@visto.com
Modified by Brian Caswell <bmc@sourcefire.com>
Sourcefire Research Team
Judy Novak <judy.novak@sourcefire.com>
False positive information contributed by Javier Fernandez-Sanguino
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Additional References:
CVE
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0778
Microsoft
http://www.microsoft.com/technet/security/bulletin/MS00-058.asp
Arachnids
http://www.whitehats.com/info/IDS305
Bugtraq
http://www.securityfocus.com/bid/1578
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