Overview
A significant security vulnerability, identified as CVE-2025-63694, has been discovered in DzzOffice, a web-based office suite. This vulnerability is a SQL Injection flaw present in versions 2.3.7 and earlier, specifically affecting the explorer/groupmanage component. Exploitation of this vulnerability could allow attackers to execute arbitrary SQL queries, potentially leading to unauthorized data access, modification, or even complete system compromise.
Technical Details
The SQL Injection vulnerability exists within the explorer/groupmanage functionality of DzzOffice. The exact input vector where the injection occurs is detailed in the references provided. Without proper input sanitization or parameterization, user-supplied data is directly incorporated into SQL queries. This allows an attacker to craft malicious SQL statements that are then executed by the database server.
Example (Illustrative – Actual exploit details in linked references):
/* Example of a potentially vulnerable SQL query */
$group_id = $_GET['group_id']; // Untrusted input
$query = "SELECT * FROM groups WHERE id = " . $group_id; // Vulnerable!
An attacker could inject SQL code through the group_id parameter, such as 1 OR 1=1;--, to bypass authentication or retrieve sensitive data.
CVSS Analysis
Currently, the National Vulnerability Database (NVD) has not assigned a CVSS score to CVE-2025-63694. This does not diminish the severity of the vulnerability. The lack of a CVSS score might be due to the recent publication date. Given the potential for complete database compromise through SQL injection, it is likely to receive a high or critical severity score once assessed.
Possible Impact
Successful exploitation of this SQL Injection vulnerability can have severe consequences, including:
- Data Breach: Unauthorized access to sensitive data, including user credentials, confidential documents, and financial information.
- Data Manipulation: Modification or deletion of critical data, leading to data integrity issues and service disruption.
- System Compromise: The ability to execute arbitrary commands on the database server, potentially leading to complete system takeover.
- Denial of Service (DoS): Flooding the database server with resource-intensive queries, causing performance degradation or service outage.
Mitigation and Patch Steps
- Upgrade DzzOffice: The primary mitigation is to upgrade to a patched version of DzzOffice that addresses this vulnerability. Check the DzzOffice official website for updates and security advisories.
- Input Sanitization: Implement robust input validation and sanitization techniques to prevent malicious code from being injected into SQL queries. Use parameterized queries or prepared statements.
- Web Application Firewall (WAF): Deploy a WAF to detect and block malicious SQL injection attempts.
- Principle of Least Privilege: Ensure that the database user account used by DzzOffice has only the necessary privileges required for its operation.
- Regular Security Audits: Conduct regular security audits and penetration testing to identify and address potential vulnerabilities in your DzzOffice deployment.
References
- CVE ID: CVE-2025-63694
- Exploit Details: github.com/Yohane-Mashiro/dzzoffice_sql
- Issue Report: github.com/zyx0814/dzzoffice/issues/364
