CVE-2018-25175 in Web Libre
Summary
by MITRE • 03/06/2026
Alienor Web Libre 2.0 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the identifiant parameter. Attackers can submit crafted POST requests to index.php with SQL injection payloads in the identifiant field to extract sensitive database information including usernames, databases, and version details.
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Analysis
by VulDB Data Team • 03/06/2026
Alienor Web Libre 2.0 suffers from a critical SQL injection vulnerability classified as CVE-2018-25175 that represents a fundamental flaw in the application's input validation mechanisms. This vulnerability exists within the index.php script where the identifiant parameter is processed without proper sanitization or parameterization, creating an exploitable entry point for malicious actors. The vulnerability allows unauthenticated attackers to inject arbitrary SQL commands directly into the database query execution flow, bypassing normal authentication and authorization controls that should protect sensitive information. The flaw specifically manifests when the application accepts user input through the identifiant field in POST requests and directly incorporates this data into SQL queries without adequate protection measures.
The technical exploitation of this vulnerability follows a well-established pattern that aligns with CWE-89, which categorizes improper neutralization of special elements used in SQL commands as a primary cause of SQL injection attacks. Attackers can craft malicious payloads that manipulate the SQL query structure to extract database contents, including but not limited to user credentials, database schema information, and system version details. The vulnerability's impact extends beyond simple data extraction as it provides attackers with the capability to perform unauthorized database operations such as data modification, deletion, or even privilege escalation within the database environment. This weakness creates a pathway for attackers to gain comprehensive access to the underlying data infrastructure that Alienor Web Libre 2.0 relies upon for its operations.
The operational implications of this vulnerability are severe and multifaceted, as it fundamentally compromises the confidentiality, integrity, and availability of the affected system. Unauthenticated access to database contents exposes sensitive information that could include user account credentials, personal data, and system configuration details that attackers could leverage for further exploitation. The vulnerability also creates opportunities for attackers to establish persistent access through database-level backdoors or to escalate privileges within the database environment. From an attack methodology perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1071.004 sub-technique for Application Layer Protocol: Web Protocols, where attackers exploit web application vulnerabilities to gain unauthorized access. The lack of authentication requirements for exploitation makes this particularly dangerous as it requires no prior access credentials or insider knowledge.
Mitigation strategies for CVE-2018-25175 must address both immediate remediation and long-term security improvements to prevent similar vulnerabilities from occurring. The primary solution involves implementing proper input validation and parameterized queries throughout the application codebase, specifically targeting the identifiant parameter processing in index.php. Database access controls should be strengthened through the principle of least privilege, ensuring that application database accounts have minimal required permissions and cannot execute administrative commands. Additionally, implementing web application firewalls and input sanitization mechanisms can provide additional layers of protection against SQL injection attempts. Regular security assessments and code reviews should be conducted to identify and remediate similar vulnerabilities before they can be exploited by malicious actors. The vulnerability also underscores the importance of keeping web applications updated with the latest security patches and following secure coding practices as outlined in industry standards such as OWASP Top Ten and NIST cybersecurity guidelines.