CVE-2021-35284 is a critical SQL Injection vulnerability identified in the function get_user within the login_manager.php file of the rizalafani cms-php version 1. This vulnerability arises due to improper sanitization or validation of user-supplied input before it is incorporated into SQL queries. Specifically, the get_user function likely constructs SQL statements dynamically using input parameters without adequate escaping or parameterization, allowing an attacker to inject malicious SQL code. Exploitation of this vulnerability can lead to unauthorized access to the underlying database, enabling attackers to read, modify, or delete sensitive data. Given the CVSS 3.1 base score of 9.8, the vulnerability is exploitable remotely over the network without any authentication or user interaction, with low attack complexity. The impact spans confidentiality, integrity, and availability, as attackers can exfiltrate sensitive information, alter or corrupt data, and potentially disrupt application functionality or cause denial of service. Although no official patch or vendor project information is provided, the vulnerability is well-documented under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). No known exploits have been reported in the wild as of the published date (November 23, 2022), but the critical severity and ease of exploitation make it a high-risk threat for any deployment of the affected CMS. The rizalafani cms-php appears to be a niche or less widely known content management system, which may limit exposure but also means fewer resources for mitigation or detection. Attackers leveraging this vulnerability could gain administrative access or pivot to other internal systems, depending on the database privileges and network segmentation.

For European organizations using rizalafani cms-php v1, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of their web applications and underlying data. Successful exploitation could lead to data breaches involving personal data, intellectual property, or business-critical information, potentially violating GDPR requirements and resulting in regulatory penalties. The ability to modify or delete data could disrupt business operations, damage reputation, and incur financial losses. Given the remote, unauthenticated nature of the exploit, attackers can target exposed web servers directly, increasing the attack surface. Organizations in sectors with high reliance on web-based content management, such as media, education, or small-to-medium enterprises, may be particularly vulnerable if they have adopted this CMS. The lack of known exploits in the wild suggests a window of opportunity for proactive defense, but also a risk of emerging exploitation campaigns. Additionally, if the CMS is used in multi-tenant or shared hosting environments common in Europe, compromise of one instance could have cascading effects. The absence of vendor patches or updates further exacerbates the risk, necessitating alternative mitigation strategies.

1. Immediate mitigation should focus on input validation and sanitization: implement prepared statements with parameterized queries in the get_user function to eliminate SQL injection vectors. 2. If source code modification is not feasible, deploy Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection payloads targeting login_manager.php or related endpoints. 3. Conduct thorough code audits of the CMS to identify and remediate other potential injection points. 4. Restrict database user privileges to the minimum necessary, preventing unauthorized data manipulation even if injection occurs. 5. Monitor web server and database logs for anomalous queries or access patterns indicative of exploitation attempts. 6. Consider isolating or decommissioning the rizalafani cms-php deployment if it cannot be secured promptly. 7. Engage with the CMS community or developers to seek patches or updates, and subscribe to vulnerability advisories for future fixes. 8. Implement network-level protections such as IP whitelisting or VPN access for administrative interfaces to reduce exposure. 9. Educate development and operations teams about secure coding practices and the risks of SQL injection.