CVE-2002-0787 in Injoin Directory Server
Summary
by MITRE
Cross-site scripting vulnerabilities in iCon administrative web server for Critical Path inJoin Directory Server 4.0 allow remote attackers to execute script as the administrator via administrator URLs with modified (1) LOCID or (2) OC parameters.
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Analysis
by VulDB Data Team • 12/24/2024
The vulnerability identified as CVE-2002-0787 represents a critical cross-site scripting flaw within the iCon administrative web server component of Critical Path inJoin Directory Server version 4.0. This security weakness resides in the administrative interface that manages directory server operations, creating a significant risk for unauthorized actors seeking to compromise the system's administrative privileges. The vulnerability specifically affects the handling of two parameter types - LOCID and OC - within administrator URLs, making it particularly dangerous as it directly targets the administrative functions of the directory server.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the web server's administrative interface. When administrators access specific URLs containing modified LOCID or OC parameters, the server fails to properly sanitize user-supplied input before incorporating it into web responses. This lack of proper input sanitization creates an environment where malicious scripts can be injected and subsequently executed within the administrative context of the web application. The flaw operates under the CWE-79 category of Cross-Site Scripting, specifically manifesting as reflected XSS where the malicious payload is reflected back to the user through the server's response. The vulnerability's exploitation requires minimal privileges as attackers only need to convince an administrator to click on a maliciously crafted URL, making it particularly insidious in environments where administrative access is frequently used.
The operational impact of CVE-2002-0787 extends beyond simple script execution, as successful exploitation could grant attackers full administrative control over the Critical Path inJoin Directory Server. This level of access would enable malicious actors to modify directory entries, create new user accounts, alter access controls, and potentially gain access to sensitive organizational data stored within the directory server. The administrative context provides attackers with elevated privileges that could be leveraged to establish persistent access, escalate privileges further, or use the compromised system as a pivot point for attacking other network resources. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and privilege escalation, specifically targeting the T1078 legitimate credentials and T1548.001 valid accounts categories. The attack vector represents a classic social engineering scenario where administrators are tricked into executing malicious code through seemingly legitimate administrative URLs, making it particularly difficult to detect and prevent.
Mitigation strategies for CVE-2002-0787 should focus on implementing comprehensive input validation and output encoding mechanisms within the administrative web interface. Organizations must ensure that all user-supplied input parameters, particularly those used in administrative contexts, undergo strict sanitization before being processed or returned in web responses. The implementation of Content Security Policy headers and proper HTML encoding of dynamic content can significantly reduce the risk of script execution. Additionally, administrators should be educated about the dangers of clicking on suspicious links, especially when navigating to administrative URLs. The most effective long-term solution involves upgrading to a patched version of Critical Path inJoin Directory Server that addresses the input validation flaws. Network segmentation and monitoring of administrative access patterns can also help detect potential exploitation attempts. From a security architecture standpoint, implementing multi-factor authentication for administrative access and regular security assessments of web applications can provide additional layers of protection against similar vulnerabilities. The vulnerability demonstrates the critical importance of securing administrative interfaces and the potential consequences of inadequate input validation in web applications.