CVE-2008-6773 in YourPlace
Summary
by MITRE
Static code injection vulnerability in user/internettoolbar/edit.php in YourPlace 1.0.2 and earlier allows remote authenticated users to execute arbitrary PHP code into user/internettoolbar/index.php via the (1) fav1_url, (2) fav1_name, (3) fav2_url, (4) fav2_name, (5) fav3_url, (6) fav3_name, (7) fav4_url, (8) fav4_name, (9) fav5_url, or (10) fav5_name parameters.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 11/20/2024
This vulnerability represents a critical static code injection flaw in the YourPlace 1.0.2 content management system that allows authenticated remote attackers to execute arbitrary PHP code through manipulation of specific parameters in the internet toolbar editing functionality. The vulnerability specifically affects the user/internettoolbar/edit.php script and impacts the user/internettoolbar/index.php file where the injected code gets executed. The attack vector involves manipulation of ten distinct parameters including fav1_url, fav1_name, fav2_url, fav2_name, and so forth up to fav5_url and fav5_name, all of which are processed without adequate input validation or sanitization mechanisms.
The technical flaw stems from improper handling of user-supplied input within the application's parameter processing logic. When authenticated users submit data through the internet toolbar editing interface, the application directly incorporates these parameters into the PHP execution context without proper sanitization or encoding. This creates a classic code injection vulnerability where malicious input can be interpreted as executable PHP code rather than simple data. The vulnerability is classified as a static code injection because the injection occurs at the point where the code is statically defined in the application's processing flow rather than through dynamic code generation.
The operational impact of this vulnerability is severe as it provides authenticated attackers with the ability to execute arbitrary PHP code on the target system, potentially leading to complete system compromise. An attacker with valid credentials can manipulate the toolbar parameters to inject malicious code that gets executed when the index.php file is rendered, allowing for remote code execution, data exfiltration, privilege escalation, and persistent backdoor installation. The vulnerability affects all versions up to and including 1.0.2, indicating a long-standing issue that was not properly addressed in the application's security architecture.
This vulnerability aligns with CWE-94, which describes "Improper Control of Generation of Code ('Code Injection')" and represents a specific instance of code injection where user input is directly incorporated into executable code without proper sanitization. From an attack framework perspective, this vulnerability maps to the execution phase of the kill chain and can be categorized under the ATT&CK technique T1059.007 for "Command and Scripting Interpreter: PowerShell" when considering the PHP code execution capabilities. The vulnerability also demonstrates poor input validation practices that violate security best practices outlined in OWASP Top Ten and the ISO 27001 information security standards.
Mitigation strategies should include immediate patching of the application to version 1.0.3 or later where this vulnerability has been addressed through proper input validation and sanitization of user-supplied parameters. Additionally, administrators should implement input validation at multiple layers including application-level filtering, output encoding, and parameter sanitization. Network segmentation and access controls should be enforced to limit the impact of potential exploitation, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in the application's codebase. The vulnerability highlights the importance of secure coding practices and input validation in preventing code injection attacks that can lead to complete system compromise.