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Message-Id: <201008130713.o7D7DDkk070609@htbridge.ch> Date: Fri, 13 Aug 2010 09:13:13 +0200 (CEST) From: advisory@...ridge.ch To: bugtraq@...urityfocus.com Subject: Local File Inclusion in CMS Source Vulnerability ID: HTB22545 Reference: http://www.htbridge.ch/advisory/local_file_inclusion_in_cms_source.html Product: CMS Source Vendor: Proud Daddy Web Design ( http://www.prouddaddy.net/ ) Vulnerable Version: Current at 28.07.2010 and Probably Prior Versions Vendor Notification: 28 July 2010 Vulnerability Type: Local File Inclusion Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: High Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: Null-byte (%00) injection and catalog bypass (../) attacks are possible and can lead to arbitrary local file inclusion and execution. An attacker needs to have a possibility to modify or create local files to exploit this vulnerability, or have a malicious file already existing in the system. The vulnerability exists due to failure in the "index.php" script to properly sanitize user-supplied input in "target" variable. An attacker can compromise the application, execute arbitrary operating system commands, alter file system integrity, access or modify sensitive data. Attacker can use browser to exploit this vulnerability. The following PoC is available: http://host/home/demo1/index.php?target=./../../../../../../../../../../../../etc/passwd%00 http://host/home/demo1/index.php?target=./../../../../../../../../../../../../path/to/php_file%00
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