CVE-2007-1988 in PHPEcho
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in kernel/filters.inc.php in PHPEcho CMS 2.0 allows remote attackers to inject arbitrary web script or HTML via the id parameter.
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Analysis
by VulDB Data Team • 08/28/2018
The vulnerability identified as CVE-2007-1988 represents a critical cross-site scripting flaw within PHPEcho CMS 2.0's kernel/filters.inc.php component. This security weakness specifically targets the handling of the id parameter, creating an avenue for remote attackers to execute malicious web scripts or HTML code within the context of affected user sessions. The vulnerability stems from inadequate input validation and output sanitization mechanisms that fail to properly escape or filter user-supplied data before it is rendered in web pages. According to CWE-79, this classification indicates a weakness where web applications fail to properly sanitize user input, leading to potential code injection attacks that can compromise user browsers and session integrity. The attack vector operates through the manipulation of the id parameter, which when processed by the vulnerable filters.inc.php script, allows malicious payloads to be executed in the victim's browser context.
The technical implementation of this vulnerability demonstrates a classic XSS flaw where user-controllable input flows directly into the application's output without proper sanitization. When the id parameter is passed to the kernel/filters.inc.php file, the application fails to implement adequate escaping or encoding of special characters that could be interpreted as HTML or JavaScript code. This failure creates a persistent security gap where attackers can embed malicious scripts that execute whenever legitimate users view pages containing the compromised parameter. The vulnerability's impact extends beyond simple script execution, as it can enable session hijacking, credential theft, and redirection to malicious sites. Attackers leveraging this vulnerability can craft payloads that exploit the user's browser context, potentially accessing sensitive data or performing unauthorized actions on behalf of the victim. The flaw aligns with ATT&CK technique T1566.001, which describes the use of malicious web content to compromise user systems through web-based attacks.
The operational impact of CVE-2007-1988 presents significant risks to organizations utilizing PHPEcho CMS 2.0, particularly those handling sensitive user data or requiring secure web interactions. Successful exploitation allows attackers to manipulate the application's behavior and potentially access user sessions, leading to data breaches or unauthorized system access. The vulnerability affects the core filtering mechanisms of the CMS, which means that any page utilizing the id parameter could become a vector for attack. Organizations may experience compromised user trust, regulatory compliance issues, and potential financial losses due to data exposure or service disruption. The attack's remote nature means that exploitation can occur from anywhere on the internet without requiring physical access to the target system. Security professionals should note that this vulnerability represents a fundamental flaw in the application's security architecture, particularly in its input handling and output filtering processes. The flaw persists across multiple user sessions and can be exploited repeatedly, making it a persistent threat to the application's security posture.
Mitigation strategies for CVE-2007-1988 should prioritize immediate patching of the PHPEcho CMS 2.0 installation to address the identified XSS vulnerability. Organizations must implement proper input validation and output encoding mechanisms throughout their web applications, ensuring that all user-supplied data is properly sanitized before processing. The recommended approach includes implementing Content Security Policy (CSP) headers to limit script execution and prevent unauthorized code injection. Additionally, developers should adopt secure coding practices that enforce proper escaping of user input for HTML contexts, preventing malicious scripts from executing in browser environments. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the web application. Organizations should also consider implementing web application firewalls to detect and block suspicious requests targeting the vulnerable id parameter. The remediation process must include thorough testing to ensure that the patch does not introduce regressions in application functionality while effectively addressing the XSS vulnerability. Security teams should monitor for exploitation attempts and maintain updated threat intelligence regarding similar vulnerabilities in the broader CMS ecosystem.