National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-4444)

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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).

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NVD contains:

CVE Vulnerabilities: 56393
Checklists: 226
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OVAL Queries: 8140
CPE Names: 73033

Last updated: Tue May 21 19:59:39 EDT 2013

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NVD is a product of the NIST Computer Security Division and is sponsored by the Department of Homeland Security's National Cyber Security Division. It supports the U.S. government multi-agency (OSD, DHS, NSA, DISA, and NIST) Information Security Automation Program. It is the U.S. government content repository for the Security Content Automation Protocol (SCAP).

NIST Security Configuration Checklists - CSD

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Vulnerability Summary for CVE-2009-4444

Original release date:12/29/2009

Last revised:06/28/2010

Source: US-CERT/NIST

Overview

Microsoft Internet Information Services (IIS) 5.x and 6.x uses only the portion of a filename before a ; (semicolon) character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a (1) .asp, (2) .cer, or (3) .asa first extension, followed by a semicolon and a safe extension, as demonstrated by the use of asp.dll to handle a .asp;.jpg file.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:6.0 (MEDIUM) (AV:N/AC:M/Au:S/C:P/I:P/A:P) (legend)

Impact Subscore: 6.4

Exploitability Subscore: 6.8

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Medium

Authentication: Required to exploit

Impact Type:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: VUPEN

Name: ADV-2009-3634

Type: Advisory

Hyperlink:http://www.vupen.com/english/advisories/2009/3634

External Source: BID

Name: 37460

Hyperlink:http://www.securityfocus.com/bid/37460

External Source: MISC

Name: http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf

Hyperlink:http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf

External Source: SECTRACK

Name: 1023387