CVE-2009-3068 in RoboHelp Server
Summary
by MITRE
Unrestricted file upload vulnerability in the RoboHelpServer Servlet (robohelp/server) in Adobe RoboHelp Server 8 allows remote attackers to execute arbitrary code by uploading a Java Archive (.jsp) file during a PUBLISH action, then accessing it via a direct request to the file in the robohelp/robo/reserved/web directory under its sessionid subdirectory, as demonstrated by the vd_adobe module in VulnDisco Pack Professional 8.7 through 8.11.
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Analysis
by VulDB Data Team • 03/01/2025
The vulnerability described in CVE-2009-3068 represents a critical unrestricted file upload flaw within Adobe RoboHelp Server 8's RoboHelpServer Servlet component. This security weakness resides in the server's handling of PUBLISH actions where users can upload files through the web interface. The vulnerability specifically affects the robohelp/server component that processes user submissions, creating an avenue for remote code execution through carefully crafted file uploads. The flaw enables attackers to bypass normal security restrictions that should prevent arbitrary file placement and execution within the server's web directory structure.
The technical implementation of this vulnerability exploits the lack of proper input validation and file type restrictions within the RoboHelpServer Servlet. When users perform a PUBLISH action, the system accepts Java Archive files with .jsp extensions without adequate verification of their intended purpose or content. The attacker can upload a malicious .jsp file through the standard publishing workflow, which then gets stored in the robohelp/robo/reserved/web directory under a session-specific subdirectory. This directory structure is typically accessible via direct HTTP requests, allowing the attacker to execute the uploaded malicious code directly through web browser access. The vulnerability is particularly dangerous because it leverages legitimate server functionality to achieve unauthorized code execution.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise potential. An attacker can upload web shells or other malicious code that persists on the server, enabling ongoing unauthorized access and data exfiltration. The vulnerability affects versions 8.7 through 8.11 of the VulnDisco Pack Professional, suggesting a broader scope of affected systems within the Adobe RoboHelp ecosystem. The attack vector requires no privileged access initially, as the vulnerability exists in the web publishing interface that is typically accessible to authenticated users. This makes the vulnerability particularly concerning for environments where multiple users have publishing privileges, as any compromised account could lead to full server compromise.
Security professionals should consider this vulnerability in the context of CWE-434, which addresses "Unrestricted Upload of File with Dangerous Type," and its relationship to ATT&CK technique T1190, "Exploit Public-Facing Application." The vulnerability demonstrates how seemingly benign functionality like document publishing can be weaponized for malicious purposes. Organizations should implement immediate mitigations including restricting file upload capabilities, implementing strict file type validation, and ensuring proper access controls on web directories. Network segmentation and monitoring of unusual file upload patterns can help detect exploitation attempts. The vulnerability also highlights the importance of regular security assessments of web applications and the need for comprehensive input validation across all user-facing interfaces. Given the age of this vulnerability, systems administrators should prioritize immediate patching or migration to supported versions of Adobe RoboHelp Server to prevent exploitation by threat actors who may have already identified and weaponized this weakness.