GEN:SID | 1:1016 |
Message | WEB-IIS global.asa access |
Summary | This event is generated when an attempt is made to craft a URL containing a reference to the "/global.asa" file.
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Impact | Intelligence gathering. This attack may permit disclosure of the source code of global.asa file that is 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. The scripting engines permit the execution of server-side processing. IIS determines which scripting engine is appropriate 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 a referenced file, such as global.asa, to the browser. The Nessus vulnerability scanner references the global.asa file in a GET request to determine whether a host is susceptible to this exploit.
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Affected Systems | Microsoft IIS 5.0
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Attack Scenarios | An attacker can craft a URL that includes the 'Translate: f' followed by a '/' to disclose the source code of a file such as global.asa on the vulnerable server.
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Ease of Attack | Simple. The Nessus vulnerability scanner can test for this exploit.
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Corrective Action | Apply the patch referenced in the Microsoft link.
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Additional References | Nessus http://cgi.nessus.org/plugins/dump.php3?id=10491
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
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Rule References | cve: 2000-0778
nessus: 10491
nessus: 10991
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