.Net Framework Tilde Character DoS

Security Research - .Net Framework Tilde Character DoS

Website : http://soroush.secproject.com/blog/

I. BACKGROUND

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"The .NET Framework is a software framework developed by Microsoft that runs primarily on Microsoft Windows.

It includes a large library and provides language interoperability

across several programming languages." (Wikipedia)

II. DESCRIPTION

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Vulnerability Research Team discovered a  vulnerability

in Microsoft .NET Framework.

The vulnerability is caused by a tilde character "~" in a Get request, which could allow remote attackers

to Deny the functionality of the server.

III. AFFECTED PRODUCTS

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.Net Framework 1.0 Windows XP

.Net Framework 1.1 Windows 2003

.Net Framework 2.0 Windows 2003 R2

.Net Framework 3.0 Windows 2008

.Net Framework 3.5 Windows 2008 R2

.Net Framework 4.0 Windows 2008 R2,Windows 7

IV. Binary Analysis & Exploits/PoCs

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In-depth technical analysis of the vulnerability and a functional exploit

are available through:

http://soroush.secproject.com/blog/2012/06/microsoft-iis-tilde-character-vulnerabilityfeature-short-filefolder-name-disclosure/

V. SOLUTION

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There are still workarounds through Vendor and security vendors.

Read more: Soroush Secproject

Read more: ExploitDb

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