CVE-2007-3515 in TotalCalendar
Summary
by MITRE
SQL injection vulnerability in view_event.php in TotalCalendar 2.402 and earlier allows remote attackers to execute arbitrary SQL commands via the id parameter.
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Analysis
by VulDB Data Team • 09/24/2024
The CVE-2007-3515 vulnerability represents a critical sql injection flaw in TotalCalendar version 2.402 and earlier, specifically within the view_event.php script. This vulnerability exposes the application to remote code execution attacks through improper input validation mechanisms. The flaw occurs when the application fails to adequately sanitize user-supplied data passed through the id parameter, creating an avenue for malicious actors to inject arbitrary sql commands into the backend database query execution process. The vulnerability operates at the application layer and can be exploited without authentication, making it particularly dangerous for web applications that lack proper input sanitization measures.
The technical implementation of this vulnerability stems from the application's failure to employ proper parameterized queries or input validation techniques when processing the id parameter. When a user submits a request containing a maliciously crafted id value, the application directly incorporates this input into sql statements without appropriate escaping or sanitization. This behavior aligns with common weakness enumeration CWE-89, which specifically addresses improper neutralization of special elements used in sql commands. The vulnerability creates a direct path for attackers to manipulate the underlying database queries and potentially execute unauthorized operations including data extraction, modification, or deletion. Attackers can leverage this weakness to bypass authentication mechanisms, access sensitive information, or even escalate privileges within the database environment.
The operational impact of CVE-2007-3515 extends beyond simple data theft, as it enables comprehensive database compromise and potential system infiltration. Remote attackers can exploit this vulnerability to gain unauthorized access to calendar data, user credentials, and potentially other sensitive information stored within the application's database. The vulnerability's exploitation can lead to complete system compromise, especially when combined with other attack vectors or when the application runs with elevated database privileges. Organizations running affected versions of TotalCalendar face significant risk of data breaches, regulatory compliance violations, and potential legal consequences. The vulnerability also creates opportunities for attackers to establish persistent access points or deploy additional malicious payloads within the compromised environment.
Mitigation strategies for CVE-2007-3515 require immediate implementation of input validation and parameterized query usage. Organizations must upgrade to patched versions of TotalCalendar or implement proper input sanitization measures including proper escaping of special characters and validation of input data types. The recommended approach involves transitioning from dynamic sql query construction to parameterized queries or stored procedures that separate sql code from user input data. Security controls should include web application firewalls capable of detecting sql injection patterns, input validation at multiple layers, and regular security assessments of web applications. Additionally, implementing principle of least privilege for database accounts and regular monitoring of database access logs can help detect and prevent exploitation attempts. This vulnerability demonstrates the critical importance of following secure coding practices and adhering to established security frameworks such as those recommended by the open web application security project OWASP. Organizations should also consider implementing automated vulnerability scanning tools and regular security training for development teams to prevent similar issues in future software implementations. The attack surface reduction through proper input validation and secure coding practices provides defense in depth against similar sql injection vulnerabilities that may exist in other application components.