CVE-2008-0257 in Search Engine
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in search.pl in Dansie Search Engine 2.7 allows remote attackers to inject arbitrary web script or HTML via the keywords parameter. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 11/08/2017
The vulnerability identified as CVE-2008-0257 represents a critical cross-site scripting flaw within the Dansie Search Engine version 2.7, specifically affecting the search.pl script component. This type of vulnerability falls under the broader category of insecure input handling and represents a fundamental weakness in web application security architecture. The vulnerability exists in the way the application processes user input through the keywords parameter, which is typically used for search functionality within the web interface. When users submit search queries through this parameter, the application fails to properly sanitize or escape the input before incorporating it into the HTML response, creating an opportunity for malicious actors to execute arbitrary code within the context of other users' browsers.
The technical implementation of this vulnerability stems from the application's failure to implement proper input validation and output encoding mechanisms. When the search.pl script receives the keywords parameter, it directly incorporates user-supplied data into dynamically generated HTML content without adequate sanitization. This flaw aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities resulting from insufficient input validation and output encoding. The vulnerability's impact is amplified by the fact that it affects a core search functionality that is likely accessed by numerous users, making it a prime target for exploitation. Attackers can craft malicious search queries containing embedded JavaScript code, HTML tags, or other malicious payloads that will execute when other users view the search results page.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it creates a persistent threat vector that can be exploited across multiple user sessions. Once an attacker successfully injects malicious code through the keywords parameter, any user who views the affected search results page becomes a potential victim of the attack. This creates a propagation mechanism where the malicious payload can spread to unsuspecting users, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability's remote nature means that attackers do not require physical access to the system or local network privileges to exploit it, making it particularly dangerous in public-facing web applications. The attack vector follows standard XSS exploitation patterns documented in the MITRE ATT&CK framework under the technique of web application attacks, specifically targeting the execution of malicious scripts in user browsers.
Mitigation strategies for this vulnerability must address both the immediate security gap and establish long-term defensive measures. The primary remediation involves implementing proper input sanitization and output encoding mechanisms throughout the application's processing pipeline, particularly for the search.pl script and the keywords parameter. This includes validating all user input against a strict whitelist of acceptable characters and implementing proper HTML escaping for any data that must be rendered in the browser context. Organizations should also consider implementing Content Security Policy (CSP) headers to provide an additional layer of protection against XSS attacks. The vulnerability highlights the importance of following secure coding practices and implementing comprehensive input validation as outlined in industry standards such as the OWASP Top Ten and NIST guidelines. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other application components, as this type of flaw often indicates broader security weaknesses in the application architecture.