CVE-2018-19753 in Tarantella
Summary
by MITRE
Tarantella Enterprise before 3.11 allows Directory Traversal.
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Analysis
by VulDB Data Team • 06/13/2023
The vulnerability identified as CVE-2018-19753 represents a critical directory traversal flaw affecting Tarantella Enterprise versions prior to 3.11. This security weakness enables attackers to access files and directories outside the intended scope of the application's file system access. The vulnerability stems from insufficient input validation and sanitization mechanisms within the application's file handling processes, allowing malicious actors to manipulate file path references through specially crafted requests. Directory traversal attacks exploit the fundamental way applications process file system paths, typically by leveraging sequences such as ../ or ..\ to navigate upward through directory structures and gain unauthorized access to sensitive system resources.
The technical implementation of this vulnerability occurs when the Tarantella Enterprise application fails to properly validate or sanitize user-supplied input that is subsequently used in file system operations. Attackers can craft requests containing directory traversal sequences that bypass normal access controls, potentially allowing them to read system configuration files, access sensitive data, or even execute arbitrary code on the affected system. This flaw operates at the application layer and specifically targets the file system access controls implemented by the Tarantella Enterprise platform, making it particularly dangerous in environments where the application processes user input directly without proper sanitization.
From an operational perspective, the impact of CVE-2018-19753 extends beyond simple unauthorized file access to potentially compromise entire system architectures. Organizations running vulnerable versions of Tarantella Enterprise face significant risks including data breaches, system compromise, and potential lateral movement within network environments. The vulnerability aligns with CWE-22, which categorizes directory traversal flaws as a fundamental weakness in input validation and access control mechanisms. This weakness allows attackers to bypass normal security controls and access resources that should be restricted, potentially leading to complete system compromise when combined with other vulnerabilities or attack vectors.
The attack surface for this vulnerability encompasses all components of Tarantella Enterprise that process file system operations, including web interfaces, administrative tools, and any file handling modules that accept user input. Attackers typically exploit this weakness by constructing malicious requests that include directory traversal sequences, which are then processed by the vulnerable application without proper validation. The vulnerability is particularly concerning because it can be exploited remotely without authentication in many scenarios, making it a prime target for automated exploitation tools and widespread attack campaigns. Organizations should consider this vulnerability in the context of ATT&CK framework's T1083 (File and Directory Discovery) and T1566 (Phishing) techniques, as attackers may use directory traversal to gather intelligence about system configurations or to establish persistence mechanisms.
Mitigation strategies for CVE-2018-19753 primarily involve immediate patching of Tarantella Enterprise installations to version 3.11 or later, which contains the necessary security fixes. Organizations should also implement robust input validation mechanisms that sanitize all user-supplied data before processing, particularly in file system operations. Network segmentation and access controls should be strengthened to limit potential attack vectors, while regular security assessments should be conducted to identify similar vulnerabilities in other applications. Additionally, implementing proper logging and monitoring of file system access patterns can help detect exploitation attempts and provide early warning of potential security incidents. The vulnerability demonstrates the critical importance of proper input validation and access control implementation, aligning with industry best practices outlined in security frameworks such as NIST SP 800-53 and ISO 27001 for maintaining secure system configurations.