GEN:SID | 1:1768 |
Message | WEB-IIS header field buffer overflow attempt |
Summary | This event is generated when an attempt is made to overflow a buffer in HTTP header field handler of Microsoft Internet Information Server (IIS) versions 4.0, 5.0, and 5.1.
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Impact | Denial of Service, arbitrary code execution. Full administrative control is possible.
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Detailed Information | A vulnerability exists in HTTP header process in ASP.DLL , a specially crafted packet sent to this processor will allow an attacker to disrupt the ISS service or run any arbitrary commands with the privileges of the ASP ISAPI extension.
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Affected Systems | Microsoft Internet Information Server 4.0 Microsoft Internet Information Services 5.0 Microsoft Internet Information Services 5.1
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Attack Scenarios | A remote attacker first probes the version of ISS server then ,could attempt overflow one of the HTTP header field buffers and execute arbitrary code on the system.
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Ease of Attack | Simple.
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Corrective Action | Apply the appropriate vendor supplied patch.
Upgrade to the latest non-affected version of the software.
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Additional References | Microsoft: http://www.microsoft.com/technet/security/bulletin/MS02-018.asp
CERT: http://www.cert.org/advisories/CA-2002-09.html
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Rule References | bugtraq: 4476
cve: 2002-0150
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