Visual Synapse HTTP Server v1.0 RC3 Directory Traversal Vulnerability

2010-10-11 / 2010-10-12
Credit: Felipe Aragon
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-22


Ogólna skala CVSS: 5/10
Znaczenie: 2.9/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Brak
Wpływ na dostępność: Brak

Syhunt Advisory: Visual Synapse HTTP Server Directory Traversal Vulnerability Advisory-ID: 201010071 Discovery Date: 09.07.2010 Release Date: 10.07.2010 Affected Applications: Visual Synapse HTTP Server 1.0 RC3, 1.0 RC2, 1.0 RC1, 0.60 and previous releases; And any applications using the Visual Synapse HTTP Server component Class: Directory Traversal Status: Unpatched/Vendor informed Vendor: Rene Tegel Vendor URL: http://sourceforge.net/projects/visualsynapse/ Advisory URL: http://www.syhunt.com/advisories/?id=vs-httpd-dirtrav The Common Vulnerabilities and Exposures (CVE) project has assigned the following CVE to this vulnerability: CVE-2010-3743 ---------------------------------------------------------------- Overview: Visual Synapse HTTP Server is an open source HTTP server and also server component for Delphi, Freepascal and C++ Builder developed by Rene Tegel. The server supports PHP, Perl and CGI and is distributed both as source and as precompiled binary. Description: A vulnerability in the Visual Synapse HTTP server allows remote attackers to traverse directories on the system. This is possible by sending a specially-crafted URL request containing "dot dot" sequences (/..\). ---------------------------------------------------------------- Details: Example 1: GET /..\..\..\..\windows/system.ini HTTP/1.0 Example 2: GET /..\..\..\boot.ini HTTP/1.0 Note: the server was installed in the "C:\Server\VSHTTPD\" directory. Sandcat can also be used to identify this issue: http://www.syhunt.com/sandcat ---------------------------------------------------------------- Vulnerability Status: The vendor was notified, but no reply has been received. The source code of the server warns about possible security issues and that it is not suitable for production environments yet. This warning must be taken seriously. Any application using this source is vulnerable unless the code is patched. Any machine running the compiled HTTPD Server demo is vulnerable as well, unless the application is replaced with an up-to-date and patched version. ---------------------------------------------------------------- Credit: Felipe Aragon Syhunt Security Research Team, www.syhunt.com --- Copyright © 2010 Syhunt Security Disclaimer: The information in this advisory is provided "as is" without warranty of any kind. Details provided are strictly for educational and defensive purposes. Syhunt is not liable for any damages caused by direct or indirect use of the information provided by this advisory.

Referencje:

http://www.syhunt.com/advisories/?id=vs-httpd-dirtrav
http://www.securityfocus.com/bid/43830
http://www.securityfocus.com/archive/1/archive/1/514167/100/0/threaded
http://www.exploit-db.com/exploits/15216


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