CVE-2008-6440 in Helpdesk
Summary
by MITRE
Cerberus Helpdesk before 4.0 (Build 600) allows remote attackers to obtain sensitive information via direct requests for "controllers ... that aren t standard helpdesk pages," possibly involving the (1) /display and (2) /kb URIs.
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Analysis
by VulDB Data Team • 11/01/2018
The vulnerability identified as CVE-2008-6440 affects Cerberus Helpdesk versions prior to 4.0 build 600, representing a significant information disclosure flaw that could enable remote attackers to access sensitive system data. This vulnerability stems from inadequate input validation and access control mechanisms within the application's URI handling logic, specifically concerning non-standard helpdesk page controllers.
The technical implementation of this vulnerability involves the application's failure to properly authenticate and authorize access requests to specific URI paths including /display and /kb endpoints. These controllers are designed to handle specialized content delivery but lack proper access restrictions, allowing attackers to directly request these endpoints without proper authentication. The flaw operates at the application layer where the web server processes incoming requests and fails to validate whether the requesting entity has appropriate privileges to access the requested resources.
From an operational perspective, this vulnerability poses substantial risk to organizations utilizing Cerberus Helpdesk as it could expose confidential information stored within the helpdesk system. Attackers could potentially access knowledge base articles, display configurations, or other sensitive data that should be restricted to authorized users only. The impact extends beyond simple information disclosure as the vulnerability may also provide attackers with insights into the application's internal structure and potentially enable further exploitation attempts.
The vulnerability aligns with CWE-200, which describes "Information Exposure" and falls under the broader category of inadequate access control mechanisms. This weakness creates an attack surface that could be leveraged by threat actors to gather intelligence about the system architecture and potentially identify additional vulnerabilities within the application. The ATT&CK framework categorizes this under T1083, "File and Directory Discovery," as attackers could use this vulnerability to enumerate system resources and gather information about the application's configuration and data organization.
Mitigation strategies should focus on implementing proper authentication checks for all URI endpoints, particularly those that handle non-standard helpdesk pages. Organizations should update to Cerberus Helpdesk version 4.0 or later where this vulnerability has been addressed through improved access control mechanisms. Additionally, implementing web application firewalls, conducting regular security assessments, and applying principle of least privilege access controls can significantly reduce the risk of exploitation. Network segmentation and monitoring of unusual access patterns to these specific URI paths can also provide early detection capabilities for potential exploitation attempts.