CVE-2007-0390 in sabros.us
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in sabros.us 1.7 allows remote attackers to inject arbitrary web script or HTML via the tag parameter.
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Analysis
by VulDB Data Team • 08/17/2018
The CVE-2007-0390 vulnerability represents a classic cross-site scripting flaw in the sabros.us 1.7 content management system where the index.php script fails to properly sanitize user input passed through the tag parameter. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically targeting the improper validation of input data that enables malicious actors to inject arbitrary web scripts or HTML content into web pages viewed by other users. The vulnerability exists due to insufficient output encoding and input validation mechanisms within the application's handling of the tag parameter, creating an exploitable entry point for attackers to manipulate the web application's behavior.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code and passes it through the tag parameter in the index.php URL. When the vulnerable application processes this input without proper sanitization, the injected script executes in the context of other users' browsers who view the affected pages. This creates a persistent threat vector where attackers can steal session cookies, perform unauthorized actions on behalf of victims, or redirect users to malicious websites. The vulnerability demonstrates a failure in the application's data validation pipeline, where user-supplied data flows directly into the application's output without appropriate security measures.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with a foothold for more sophisticated attacks within the web application environment. Users who view pages containing the malicious tag parameter become victims of the XSS attack, potentially leading to session hijacking, credential theft, or the execution of malicious code that can compromise the entire user session. The attack vector is particularly concerning because it operates at the client-side level, making it difficult to detect and prevent through traditional network security measures. This vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, where attackers leverage web application vulnerabilities to execute malicious scripts in user browsers.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and output encoding mechanisms within the sabros.us application. The most effective approach involves implementing strict input sanitization that removes or encodes potentially dangerous characters from user-supplied data before processing. Security measures should include the adoption of Content Security Policy headers to limit script execution, proper HTML encoding of output data, and the implementation of a whitelist-based input validation system that only accepts known safe characters and formats. Organizations should also consider implementing web application firewalls to detect and block malicious payloads targeting this specific vulnerability. The remediation process must address the root cause by ensuring that all user input parameters undergo rigorous validation before being incorporated into application output, following secure coding practices that prevent the injection of executable code into web pages.