Viewcode.asp sample file distributed with IIS and SiteServer could allow remote file viewing

iis-samples-viewcode (2382)

Medium Risk

Description:

The viewcode.asp sample file shipped with Microsoft Internet Information Server (IIS) and SiteServer can be remotely exploited to read arbitrary files on vulnerable servers. This file is one of several sample files distributed with IIS and SiteServer that allow remote file viewing.

*CVSS:

Base Score:	3.5
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	None
Availability Impact:	None
Temporal Score:	2.7
Exploitability:	Unproven
Remediation Level:	Workaround
Report Confidence:	Uncorroborated

Consequences:

File Manipulation

Remedy:

Remove the viewcode.asp file from your servers. As a rule, sample code and example applications should not be installed on production servers.

References:

• Microsoft Knowledge Base Article 231368: Solution Available for File Viewers Vulnerability.
• Microsoft Knowledge Base Article 231656: Preventing ViewCode.asp from Viewing Known Server Files.
• Microsoft Security Bulletin MS99-013: Solution Available for File Viewers Vulnerability.
• CVE-1999-0737: The viewcode.asp sample file in IIS and Site Server allows remote attackers to read arbitrary files.

Platforms Affected:

• Microsoft Internet Information Server 4.0
• Microsoft Site Server
• Microsoft Windows NT 4.0

Reported:

May 07, 1999

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.