CVE-2009-1607 in LinkBase
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the administrator panel in phpForm.net LinkBase 2.0 allows remote attackers to inject arbitrary web script or HTML via the username in a registration, which is not properly handled when the administrator accesses the Users menu.
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Analysis
by VulDB Data Team • 11/28/2024
The vulnerability identified as CVE-2009-1607 represents a critical cross-site scripting flaw within the phpForm.net LinkBase 2.0 administrator panel. This weakness specifically manifests when administrators access the Users menu and encounter improperly sanitized user input, creating an avenue for remote attackers to execute malicious web scripts or HTML code. The vulnerability stems from inadequate input validation and output sanitization mechanisms that fail to properly escape or encode user-supplied data before rendering it within the administrative interface.
The technical exploitation of this vulnerability occurs through the registration process where attackers can inject malicious payloads into the username field. When the administrator subsequently navigates to the Users menu to view registered users, the system fails to properly sanitize the stored username data, resulting in the execution of injected scripts within the administrator's browser context. This type of vulnerability falls under CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a classic example of client-side code injection that can be leveraged for session hijacking, credential theft, or further privilege escalation attacks.
The operational impact of this vulnerability extends beyond simple script execution as it fundamentally compromises the security of the administrative interface. An attacker who successfully exploits this vulnerability gains the ability to execute arbitrary code within the context of the administrator's session, potentially leading to complete system compromise. The attack vector is particularly dangerous because it requires minimal user interaction beyond the initial registration process, and the administrator's privileged access makes the consequences of exploitation significantly more severe. This vulnerability aligns with ATT&CK technique T1566 which covers spearphishing with a link, and T1059 which involves command and scripting interpreter, as it enables attackers to establish persistent access through the compromised administrative interface.
Mitigation strategies for CVE-2009-1607 must address both the immediate input validation issues and implement comprehensive output encoding mechanisms throughout the application. Organizations should implement proper input sanitization by employing whitelist validation techniques for username fields, ensuring that all user-supplied data undergoes rigorous validation before being stored or displayed. Additionally, the application must implement proper output encoding when rendering user data within administrative interfaces, utilizing context-appropriate encoding mechanisms such as HTML entity encoding for web page content. The implementation of Content Security Policy headers can provide additional defense-in-depth measures to mitigate the impact of successful XSS exploitation attempts. Regular security auditing and input validation testing should be conducted to prevent similar vulnerabilities from emerging in future code versions, while also ensuring that all user-facing applications maintain consistent security practices across all data handling processes.