CVE-2010-0348 in WebCalenderC3
Summary
by MITRE
Directory traversal vulnerability in C3 Corp. WebCalenderC3 0.32 and earlier allows remote attackers to read arbitrary files via unknown vectors.
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Analysis
by VulDB Data Team • 04/11/2025
The CVE-2010-0348 vulnerability represents a critical directory traversal flaw discovered in C3 Corp. WebCalenderC3 version 0.32 and earlier implementations. This vulnerability resides within the web calendar application's file handling mechanisms and presents a significant security risk to organizations relying on this software for calendar management and scheduling. The vulnerability allows remote attackers to access arbitrary files on the underlying file system through unspecified attack vectors, potentially exposing sensitive data and system resources to unauthorized access.
The technical flaw manifests in the application's failure to properly validate and sanitize file path inputs during calendar data processing operations. When users interact with the web calendar interface, particularly when accessing calendar events or files, the application does not adequately filter or restrict the file paths that can be requested. This lack of input validation creates an opportunity for attackers to manipulate file access requests by using directory traversal sequences such as ../ or ..\ to navigate outside the intended directory boundaries and access files outside the application's designated data folders. The vulnerability operates at the application layer and can be exploited without requiring authentication, making it particularly dangerous for publicly accessible calendar systems.
The operational impact of this vulnerability extends beyond simple file access, as it can potentially lead to complete system compromise and data breaches. Attackers could leverage this vulnerability to access sensitive configuration files, database credentials, application source code, and other critical system files that may contain authentication tokens, user information, or system configurations. The vulnerability's remote exploitability means that attackers can target systems from anywhere on the internet without requiring physical access or local network presence. Organizations using affected versions of WebCalenderC3 may experience unauthorized data disclosure, system integrity compromise, and potential regulatory compliance violations depending on the nature of the exposed information.
Security professionals should implement multiple layers of mitigation strategies to address this vulnerability effectively. The primary recommendation involves immediate patching of affected systems to the latest available version of WebCalenderC3 that contains the necessary security fixes. Organizations should also deploy web application firewalls and input validation rules to filter out suspicious path traversal attempts and monitor for unusual file access patterns. Network segmentation and access controls should be implemented to limit exposure of calendar systems to untrusted networks. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications and systems. This vulnerability aligns with CWE-22 directory traversal weaknesses and maps to attack techniques in the MITRE ATT&CK framework under the T1083 file and directory discovery tactic, emphasizing the need for comprehensive defensive measures. Organizations should also establish incident response procedures to quickly address potential exploitation attempts and ensure proper monitoring of system logs for signs of directory traversal attacks.