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2.5 KiB
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82 lines
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2.5 KiB
Text
PoC: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19525.zip
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Paper: http://www.exploit-db.com/docs/19527.pdf
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Security Research - IIS Short File/Folder Name Disclosure
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Website : http://soroush.secproject.com/blog/
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I. BACKGROUND
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---------------------
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"IIS is a web server application and set of
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feature extension modules created by Microsoft for use with Microsoft Windows.
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IIS is the third most popular server in the world." (Wikipedia)
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II. DESCRIPTION
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---------------------
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Vulnerability Research Team discovered a vulnerability
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in Microsoft IIS.
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The vulnerability is caused by a tilde character "~" in a Get request, which could allow remote attackers
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to diclose File and Folder names.
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III. AFFECTED PRODUCTS
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---------------------------
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IIS 1.0, Windows NT 3.51
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IIS 2.0, Windows NT 4.0
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IIS 3.0, Windows NT 4.0 Service Pack 2
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IIS 4.0, Windows NT 4.0 Option Pack
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IIS 5.0, Windows 2000
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IIS 5.1, Windows XP Professional and Windows XP Media Center Edition
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IIS 6.0, Windows Server 2003 and Windows XP Professional x64 Edition
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IIS 7.0, Windows Server 2008 and Windows Vista
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IIS 7.5, Windows 7 (error remotely enabled or no web.config)
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IIS 7.5, Windows 2008 (classic pipeline mode)
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Note: Does not work when IIS uses .Net Framework 4.
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IV. Binary Analysis & Exploits/PoCs
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---------------------------------------
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Tilde character "~" can be used to find short names of files and folders when the website is running on IIS.
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The attacker can find important file and folders that they are not normaly visible.
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In-depth technical analysis of the vulnerability and a functional exploit
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are available through:
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http://soroush.secproject.com/blog/2012/06/microsoft-iis-tilde-character-vulnerabilityfeature-short-filefolder-name-disclosure/
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V. SOLUTION
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----------------
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There are still workarounds through Vendor and security vendors.
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Using a configured WAF may be usefull (discarding web requests including the tilde "~" character).
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VI. CREDIT
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--------------
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This vulnerability was discovered by:
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Soroush Dalili (@irsdl)
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Ali Abbasnejad
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VII. REFERENCES
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----------------------
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http://support.microsoft.com/kb/142982/en-us
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http://soroush.secproject.com/blog/2010/07/iis5-1-directory-authentication-bypass-by-using-i30index_allocation/
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VIII. DISCLOSURE TIMELINE
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-----------------------------
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2010-08-01 - Vulnerability Discovered
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2010-08-03 - Vendor Informed
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2010-12-01 - Vendor 1st Response
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2011-01-04 - Vendor 2nd Response (next version fix)
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2012-06-29 - Public Disclosure |