CVE-2006-2104 in kmail
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Kamgaing Email System (kmail) 2.3 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) d parameter to main.php, ordner parameter to (2) main.php, or (3) webdisk.php, (4) draft parameter to compose.php, or (5) m, or (6) y parameter to calendar.php.
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Analysis
by VulDB Data Team • 07/12/2021
The CVE-2006-2104 vulnerability represents a critical cross-site scripting flaw affecting the Kamgaing Email System version 2.3 and earlier. This vulnerability exposes the system to remote code execution through malicious web script injection, creating significant security risks for email users and administrators. The flaw manifests across multiple entry points within the application's web interface, making it particularly dangerous as attackers can exploit various parameters to compromise user sessions and inject malicious content.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the kmail application's web components. Specifically, the system fails to properly sanitize user-supplied data when processing parameters such as d, ordner, draft, m, y, and webdisk within their respective PHP scripts. This lack of proper input sanitization creates opportunities for attackers to inject malicious HTML or JavaScript code that executes in the context of other users' browsers. The vulnerability aligns with CWE-79, which defines cross-site scripting as the failure to properly escape output, and follows the ATT&CK technique T1566.001 for initial access through spearphishing attachments or links.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to perform session hijacking, steal user credentials, and potentially escalate privileges within the email system. When users interact with maliciously crafted links or attachments, the injected scripts can capture session cookies, redirect users to malicious sites, or modify email content. The widespread nature of the vulnerability across multiple PHP scripts increases the attack surface significantly, making it easier for threat actors to find successful exploitation vectors. This vulnerability particularly impacts organizations relying on the kmail system for email communications, as it undermines the fundamental security assumptions of web-based email applications.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding across all user-supplied parameters. Organizations must immediately upgrade to versions of kmail that address these vulnerabilities, as no patches were available for the affected versions. The remediation approach should include implementing proper HTML escaping for all dynamic content, validating input parameters against strict whitelists, and employing Content Security Policy headers to limit script execution. Additionally, security awareness training for users can help prevent exploitation through social engineering attacks that might leverage these vulnerabilities, while network monitoring should be enhanced to detect suspicious traffic patterns associated with XSS exploitation attempts.