CVE-2006-3193 in BandSite
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Grayscale BandSite CMS 1.1.1, when register_globals is enabled, allow remote attackers to execute arbitrary PHP code via a URL in the root_path parameter to (1) includes/content/contact_content.php; multiple files in adminpanel/includes/add_forms/ including (2) addbioform.php, (3) addfliersform.php, (4) addgenmerchform.php, (5) addinterviewsform.php, (6) addlinksform.php, (7) addlyricsform.php, (8) addmembioform.php, (9) addmerchform.php, (10) addmerchpicform.php, (11) addnewsform.php, (12) addphotosform.php, (13) addreleaseform.php, (14) addreleasepicform.php, (15) addrelmerchform.php, (16) addreviewsform.php, (17) addshowsform.php, (18) addwearmerchform.php; (19) adminpanel/includes/mailinglist/disphtmltbl.php, and (20) adminpanel/includes/mailinglist/dispxls.php.
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Analysis
by VulDB Data Team • 07/04/2024
The vulnerability described in CVE-2006-3193 represents a critical remote file inclusion flaw affecting the Grayscale BandSite CMS version 1.1.1. This vulnerability stems from improper input validation and insecure parameter handling within the application's codebase, specifically when the PHP configuration directive register_globals is enabled. The flaw exists across multiple files within the CMS, creating a widespread attack surface that allows remote threat actors to inject and execute arbitrary PHP code on the target system. The vulnerability is particularly dangerous because it leverages the dangerous combination of user-controllable input parameters and the permissive register_globals setting, which automatically creates PHP variables from HTTP request data.
The technical exploitation of this vulnerability occurs through manipulation of the root_path parameter in several key files throughout the application's structure. Attackers can craft malicious URLs that include remote file references, which when processed by the vulnerable scripts, get executed on the web server. This includes files in both the main includes directory and the adminpanel/includes/add_forms subdirectory, as well as mailing list display scripts. The vulnerability affects not just a single endpoint but multiple attack vectors, making it particularly challenging to secure comprehensively. The presence of register_globals in the PHP configuration creates a dangerous environment where attacker-controlled data automatically becomes available as PHP variables, eliminating the need for complex exploitation techniques to achieve code execution.
The operational impact of this vulnerability is severe and multifaceted, as it allows complete compromise of the affected web server. Remote attackers can execute arbitrary code with the privileges of the web server process, potentially leading to full system compromise, data exfiltration, or establishment of persistent backdoors. The vulnerability affects the entire CMS infrastructure, including administrative functions, content management capabilities, and mailing list operations, providing attackers with extensive access to sensitive data and system resources. The widespread nature of the vulnerability across twenty different files means that even partial exploitation can provide significant access to the application's functionality and underlying system.
Organizations should immediately disable register_globals in their PHP configurations and implement proper input validation and sanitization throughout their applications. The recommended mitigations include implementing strict parameter validation, using allowlist-based input filtering, and employing proper file inclusion techniques that do not rely on user-controllable variables. This vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and CWE-94, which covers improper execution of code. From an ATT&CK framework perspective, this vulnerability maps to T1190 - Exploit Public-Facing Application and T1059 - Command and Scripting Interpreter, as it enables remote code execution through web-based attack vectors. The vulnerability demonstrates the critical importance of secure coding practices and proper configuration management in preventing remote code execution attacks that can lead to complete system compromise.