CVE-2009-4347 in daloradius
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in daloradius-users/login.php in daloRADIUS 0.9-8 and earlier allows remote attackers to inject arbitrary web script or HTML via the error parameter.
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Analysis
by VulDB Data Team • 08/30/2021
The CVE-2009-4347 vulnerability represents a classic cross-site scripting flaw within the daloRADIUS network access control system version 0.9-8 and earlier. This vulnerability specifically affects the login.php script within the daloradius-users directory, making it a critical concern for network administrators who rely on this open-source solution for wireless network management. The flaw exists in the application's handling of user input, particularly when processing the error parameter during authentication attempts. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws identified by the CWE organization.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the daloRADIUS authentication flow. When users attempt to log in and encounter authentication failures, the system processes the error parameter without proper sanitization or encoding of user-supplied data. Attackers can exploit this weakness by crafting malicious payloads in the error parameter that contain embedded JavaScript code or HTML content. When the vulnerable application displays this unsanitized error message to other users, the injected scripts execute within the context of their browsers, potentially leading to session hijacking, credential theft, or other malicious activities. This type of vulnerability aligns with the ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically targeting web application interfaces.
The operational impact of CVE-2009-4347 extends beyond simple data theft, as it can enable attackers to establish persistent access to network resources managed by daloRADIUS. An attacker who successfully injects malicious code through this XSS vector could potentially steal user session cookies, redirect authenticated users to phishing sites, or even modify network access policies. The vulnerability is particularly dangerous in enterprise environments where daloRADIUS is used for wireless network authentication, as it could allow unauthorized access to corporate networks. The remote nature of this attack means that exploitation does not require physical access to the network infrastructure, making it accessible to attackers anywhere on the internet. This vulnerability represents a significant risk to network security posture and aligns with ATT&CK tactic TA0006 - Credential Access, as it can be leveraged to obtain valid credentials through session manipulation.
Mitigation strategies for CVE-2009-4347 should focus on immediate patching of the daloRADIUS application to version 0.9-9 or later, which contains the necessary input validation fixes. Organizations should also implement proper input sanitization techniques including HTML entity encoding of all user-supplied data before rendering it in web responses. Network administrators should consider implementing Content Security Policy (CSP) headers to limit the execution of inline scripts and reduce the impact of potential XSS attacks. Additionally, regular security assessments and input validation reviews should be conducted to identify similar vulnerabilities in other components of the network infrastructure. The remediation process should also include user education about recognizing phishing attempts and suspicious login behaviors that may indicate exploitation of this vulnerability. Organizations using daloRADIUS should implement network monitoring to detect unusual authentication patterns that might indicate exploitation attempts, particularly focusing on malformed error parameter submissions.