CVE-2009-0750 in smNews
Summary
by MITRE
SQL injection vulnerability in login.php in the smNews example script for txtSQL 2.2 Final allows remote attackers to execute arbitrary SQL commands via the username parameter.
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Analysis
by VulDB Data Team • 11/24/2024
The vulnerability identified as CVE-2009-0750 represents a critical sql injection flaw within the smNews example script of txtSQL 2.2 Final, specifically affecting the login.php component. This weakness enables remote attackers to manipulate the application's database interactions by exploiting improper input validation in the username parameter. The vulnerability stems from the application's failure to adequately sanitize user-supplied data before incorporating it into sql queries, creating an avenue for malicious exploitation that can compromise the entire database infrastructure. The flaw exists within the authentication mechanism, making it particularly dangerous as it could allow unauthorized access to user accounts and sensitive system information.
The technical implementation of this vulnerability demonstrates a classic sql injection attack vector where the username parameter in login.php does not employ proper input sanitization or parameterized queries. When an attacker submits malicious sql code through the username field, the application directly concatenates this input into sql statements without adequate validation or escaping mechanisms. This design flaw aligns with CWE-89, which categorizes sql injection vulnerabilities as a fundamental weakness in application security. The vulnerability operates at the application layer and can be exploited through web-based interfaces, making it accessible to attackers with minimal technical expertise. The attack surface is particularly concerning because it targets the authentication system, potentially allowing complete database compromise or unauthorized administrative access.
The operational impact of this vulnerability extends beyond simple data theft, encompassing potential system compromise and unauthorized access to sensitive user information. Successful exploitation could enable attackers to retrieve, modify, or delete database records, including user credentials, personal information, and application configuration details. The vulnerability affects the integrity and confidentiality of the entire txtSQL installation, as the sql injection allows for arbitrary command execution within the database context. This could result in complete system takeover, data exfiltration, or disruption of service availability. Organizations relying on txtSQL 2.2 Final for content management or database operations face significant risk of unauthorized access and potential data breaches. The vulnerability's remote exploitability means that attackers do not require physical access or network proximity to the target system, increasing the attack surface and threat exposure.
Mitigation strategies for CVE-2009-0750 must address both immediate remediation and long-term security improvements. The primary solution involves implementing proper input validation and parameterized queries to prevent sql injection attacks, which aligns with ATT&CK technique T1190 for exploitation through sql injection. Organizations should immediately upgrade to patched versions of txtSQL or apply the appropriate security patches that address the input sanitization flaws in the login.php script. Additionally, implementing web application firewalls and input filtering mechanisms can provide additional defense-in-depth layers. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components. The remediation process should include disabling or removing the vulnerable smNews example script if it is not essential for operations, as recommended by security frameworks that emphasize the principle of least privilege and minimal attack surface. Network segmentation and access controls should also be implemented to limit potential damage from successful exploitation attempts.