CVE-2019-7547 in SIDU
Summary
by MITRE
An issue was discovered in SIDU 6.0. Because the database name is not strictly filtered, the attacker can insert a name containing an XSS Payload, leading to stored XSS.
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Analysis
by VulDB Data Team • 07/06/2023
The vulnerability identified as CVE-2019-7547 resides within SIDU version 6.0, a database management tool that suffers from inadequate input validation mechanisms. This weakness creates a persistent security flaw where database names are not properly sanitized before being stored in the system's database. The root cause of this vulnerability aligns with CWE-79, which specifically addresses Cross-Site Scripting (XSS) vulnerabilities, particularly in scenarios where user-supplied data is stored and later reflected without proper sanitization. The flaw occurs at the input processing stage where the application fails to implement strict filtering mechanisms for database name parameters.
The technical implementation of this vulnerability allows malicious actors to craft database names containing XSS payloads that are then stored within the application's database. When other users interact with the application and view these database names, the malicious scripts execute in their browsers, creating a stored XSS attack vector. This type of vulnerability is particularly dangerous because the malicious code persists in the system's database and can affect multiple users over time. The attack chain begins with an attacker creating a database with a specially crafted name containing script tags or other malicious code, which is then stored and subsequently executed when legitimate users view the database list or related interfaces.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, and data exfiltration. The stored nature of the XSS payload means that victims do not need to be actively interacting with the application at the time of the attack, as the malicious code will execute automatically when they view the affected database names. This vulnerability affects the confidentiality, integrity, and availability of the system by potentially allowing unauthorized access to database information, manipulation of database listings, and disruption of normal application functionality. The attack surface is broadened as any user with permission to create databases or modify database names could potentially exploit this vulnerability.
Mitigation strategies for CVE-2019-7547 should focus on implementing strict input validation and sanitization mechanisms at all levels of the application stack. Organizations should enforce proper parameter validation for database names and other user-supplied inputs, implementing whitelisting approaches that only allow alphanumeric characters and specific safe symbols. The application should employ proper HTML escaping and encoding techniques when displaying user-supplied data, ensuring that any potentially malicious content is rendered harmless. Security patches and updates should be applied immediately upon release, and the system should be configured to prevent the storage of any input that contains known XSS attack patterns. Additionally, implementing content security policies and regular security scanning can help detect and prevent similar vulnerabilities from being introduced in future development cycles. This vulnerability demonstrates the critical importance of input validation and the principle of least privilege in database management systems, aligning with ATT&CK technique T1059.001 for Command and Scripting Interpreter and T1566.001 for Phishing.