CVE-2017-1000192 in sysPass
Summary
by MITRE
Cygnux sysPass version 2.1.7 and older is vulnerable to a Local File Inclusion in the functionality of javascript files inclusion. The attacker can read the configuration files that contain the login and password from the database, private encryption key, as well as other sensitive information.
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Analysis
by VulDB Data Team • 01/10/2023
The vulnerability identified as CVE-2017-1000192 affects Cygnux sysPass version 2.1.7 and earlier, representing a critical local file inclusion flaw that directly impacts the application's javascript file inclusion mechanism. This vulnerability resides within the core file handling functionality of the system, creating a pathway for malicious actors to manipulate file inclusion processes and access sensitive system resources. The flaw stems from insufficient input validation and sanitization within the javascript file inclusion logic, allowing attackers to craft malicious requests that bypass normal file access controls. The vulnerability specifically targets the application's ability to dynamically include javascript files, which serves as a critical component in the web application's functionality and user interface rendering processes.
The technical exploitation of this local file inclusion vulnerability enables attackers to access configuration files that contain highly sensitive information including database login credentials, private encryption keys, and other critical system data. This occurs because the application fails to properly validate or sanitize user-supplied input that determines which javascript files to include, allowing an attacker to manipulate the inclusion process to reference arbitrary local files. The vulnerability operates at the application layer, specifically within the file inclusion mechanism that should only permit legitimate javascript files from predefined directories. Attackers can leverage this weakness to read system files that contain authentication credentials, encryption keys, and other confidential data that should remain protected within the application's secure boundaries. This represents a direct violation of the principle of least privilege and proper access control enforcement.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with comprehensive access to sensitive system information that could compromise the entire application infrastructure. Once exploited, the vulnerability allows unauthorized access to database credentials, enabling attackers to directly connect to backend databases and potentially exfiltrate or manipulate sensitive data. The private encryption keys obtained through this vulnerability could be used to decrypt previously protected information, undermining the application's security posture and potentially affecting other systems that rely on the same cryptographic keys. The compromise of configuration files also provides attackers with insights into the application's architecture, network topology, and other operational details that could facilitate further attacks. This vulnerability aligns with CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and CWE-94 (Improper Control of Generation of Code) while mapping to ATT&CK techniques such as T1213 (Data from Information Repositories) and T1566 (Phishing).
The recommended mitigations for this vulnerability involve implementing robust input validation and sanitization measures to prevent malicious file path manipulation, applying the latest security patches provided by the vendor, and implementing proper access controls and privilege separation within the application. Organizations should ensure that all user-supplied input is properly validated and sanitized before being used in file inclusion operations, implementing whitelisting approaches for allowed file paths and types. The application should be configured to operate with minimal required privileges and implement proper file access controls to prevent unauthorized file access. Additionally, regular security assessments and code reviews should be conducted to identify and remediate similar vulnerabilities in other application components. The vulnerability demonstrates the critical importance of secure coding practices and proper input validation, particularly when dealing with dynamic file inclusion processes that form part of web application functionality.