CVE-2006-2797 in phpCommunityCalendar
Summary
by MITRE
Multiple SQL injection vulnerabilities in phpCommunityCalendar 4.0.3 allow remote attackers to execute arbitrary SQL commands via the (1) CalendarDetailsID parameter in (a) month.php, (b) day.php, and (c) delCalendar.php; (2) ID parameter in (d) event.php; (3) AdminUserID parameter in (e) delAdmin.php; (4) EventLocationID parameter in (f) delAddress.php; and (5) LocationID parameter in (g) delCategory.php.
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Analysis
by VulDB Data Team • 06/26/2024
The vulnerability identified as CVE-2006-2797 represents a critical SQL injection flaw in phpCommunityCalendar version 4.0.3, a widely used web-based calendar application. This vulnerability exposes multiple entry points within the application's codebase where user-supplied input is directly incorporated into SQL queries without proper sanitization or parameterization. The affected parameters include CalendarDetailsID in month.php, day.php, and delCalendar.php, which are commonly used for calendar event navigation and management. Additionally, the vulnerability extends to the ID parameter in event.php for event handling, AdminUserID in delAdmin.php for administrative user deletion, EventLocationID in delAddress.php for location management, and LocationID in delCategory.php for category deletion operations. These multiple attack vectors significantly increase the exploitability of the vulnerability across different functional areas of the calendar application.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize user input before incorporating it into database queries. When attackers submit malicious input through any of the identified parameters, the application processes these inputs directly within SQL command structures, enabling attackers to manipulate the intended query execution. This flaw aligns with CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is embedded into SQL queries without proper escaping or parameterization. The vulnerability operates at the application layer, exploiting the lack of input validation mechanisms that should normally protect against malicious SQL command injection attempts. Attackers can leverage this weakness to execute arbitrary SQL commands on the underlying database, potentially gaining unauthorized access to sensitive information, modifying or deleting calendar data, and even escalating privileges within the database environment.
The operational impact of this vulnerability extends beyond simple data exposure, as it provides attackers with substantial control over the calendar application's database infrastructure. Successful exploitation could result in complete database compromise, allowing attackers to extract all calendar events, user information, and administrative credentials stored within the system. The vulnerability's presence across multiple PHP files demonstrates a systemic code quality issue within the application, suggesting that similar vulnerabilities may exist in other database interaction points. From an operational security perspective, this vulnerability could enable attackers to manipulate calendar events, delete critical data, or even establish persistent access through database backdoors. The impact is particularly concerning for organizations relying on phpCommunityCalendar for business operations, as calendar systems often contain sensitive scheduling information, personal data, and organizational communications that could be compromised through this vulnerability.
Mitigation strategies for CVE-2006-2797 should focus on immediate patching of the phpCommunityCalendar application to version 4.0.4 or later, which contains the necessary fixes for the identified SQL injection vulnerabilities. Organizations should implement proper input validation and parameterized query techniques throughout the application codebase, ensuring that all user-supplied data is properly sanitized before database interaction. The implementation of web application firewalls and input filtering mechanisms can provide additional layers of protection against similar attacks. Security teams should conduct comprehensive code reviews to identify and remediate other potential SQL injection vulnerabilities within the application. According to ATT&CK framework category T1190, this vulnerability falls under the technique of exploiting vulnerabilities in web applications, and organizations should consider implementing the ATT&CK mitigation strategies for web application attacks including proper input validation and regular security assessments. Database access controls should be reviewed and restricted to minimize potential damage from successful exploitation attempts, while regular security audits should be conducted to ensure proper implementation of security measures and prevent similar vulnerabilities from emerging in future code releases.