CVE-2006-0729 in Teca Diary
Summary
by MITRE
SQL injection vulnerability in functions.php in Teca Diary PE 1.0 allows remote attackers to execute arbitrary SQL commands via the (1) yy, (2) mm, and (3) dd parameters.
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Analysis
by VulDB Data Team • 08/01/2017
The vulnerability identified as CVE-2006-0729 represents a critical SQL injection flaw within the Teca Diary PE 1.0 web application, specifically affecting the functions.php file. This vulnerability exposes the application to remote code execution attacks through three distinct parameter inputs: yy, mm, and dd, which are typically used for date-related operations within the diary application. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before incorporating it into database queries. According to CWE-89, this vulnerability falls under the category of SQL Injection, a well-documented weakness that allows attackers to manipulate database queries through malicious input. The attack vector leverages the fact that the application directly concatenates user-provided date parameters into SQL statements without proper parameterization or input sanitization, creating an exploitable condition where malicious SQL code can be injected and executed within the database context.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with the capability to execute arbitrary SQL commands on the underlying database system. This privilege escalation allows threat actors to perform unauthorized operations such as data extraction, modification, or deletion of sensitive information stored within the diary application's database. The three vulnerable parameters yy, mm, and dd represent common date input fields that attackers can manipulate to inject malicious SQL payloads, potentially gaining access to user accounts, personal diary entries, and other confidential data. The vulnerability's remote nature means that attackers do not require physical access to the system or local network privileges to exploit the flaw, making it particularly dangerous for web-facing applications. This aligns with ATT&CK technique T1190, which describes the exploitation of vulnerabilities in remote services, and demonstrates how unpatched applications can serve as entry points for broader network compromise. The lack of proper input validation creates a persistent risk where a single compromised parameter can lead to complete database compromise, potentially affecting all users of the Teca Diary PE application.
Mitigation strategies for CVE-2006-0729 must address both immediate remediation and long-term security hardening measures to prevent similar vulnerabilities from occurring in future versions of the application. The primary fix involves implementing proper parameterized queries or prepared statements that separate SQL code from user input, ensuring that date parameters are properly sanitized before database interaction. Input validation should be strengthened to reject any non-numeric characters in the yy, mm, and dd parameters, while also implementing proper range checking for date values to prevent malformed inputs from reaching the database layer. Organizations should also consider implementing web application firewalls that can detect and block SQL injection attempts targeting known vulnerable parameters. Additionally, regular security assessments and code reviews should be conducted to identify similar patterns of insecure database query construction, with adherence to secure coding practices such as those outlined in the OWASP Top Ten and the SANS Institute's Secure Coding Guidelines. The vulnerability demonstrates the critical importance of input validation and proper database interaction methods, reinforcing the need for comprehensive security training for developers and regular security updates to address known weaknesses in web applications.