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Last updated: 10/31/2014 6:16:40 PM

CVE Publication rate: 47

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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).

National Cyber Awareness System

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: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 37460
External Source: SECUNIA
Name: 37831
Type: Advisory
External Source: VUPEN
Name: ADV-2009-3634
Type: Advisory
External Source: SECTRACK
Name: 1023387
External Source: MISC
Name: http://soroush.secproject.com/downloadable/iis-semicolon-report.pdf
External Source: MISC
Name: http://blogs.technet.com/msrc/archive/2009/12/27/new-reports-of-a-vulnerability-in-iis.aspx

Technical Details

Vulnerability Type (View All)