CVE-2006-0067 in Links Builder
Summary
by MITRE
SQL injection vulnerability in login.php in VEGO Links Builder 2.00 and earlier allows remote attackers to execute arbitrary SQL commands via the username parameter.
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Analysis
by VulDB Data Team • 08/04/2017
The CVE-2006-0067 vulnerability represents a critical sql injection flaw in the VEGO Links Builder 2.00 software and earlier versions. This vulnerability specifically targets the login.php script which serves as the primary authentication interface for the application. The flaw occurs when the application fails to properly sanitize user input before incorporating it into sql queries, creating an exploitable condition that allows malicious actors to manipulate the underlying database operations. The vulnerability is classified under CWE-89 which specifically addresses sql injection vulnerabilities where untrusted data is directly embedded into sql command strings without proper validation or escaping mechanisms.
The technical execution of this vulnerability occurs through the username parameter within the login.php script. When an attacker submits a malicious username value containing sql payload characters, the application processes this input directly into database queries without adequate sanitization. This allows attackers to inject arbitrary sql commands that execute with the privileges of the database user account used by the application. The vulnerability is particularly dangerous because it operates at the authentication layer, potentially granting attackers full access to the application's database and all associated user information, including credentials, links, and potentially sensitive business data. The attack vector is entirely remote, meaning no local system access is required for exploitation.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and potential lateral movement within affected networks. An attacker who successfully exploits this vulnerability can manipulate the database to create new administrative accounts, modify existing user privileges, or extract sensitive information from the application's data store. The vulnerability also poses risks to the application's integrity and availability, as malicious sql commands could potentially be used to delete or corrupt database records. From an attacker perspective, this represents a high-value target because successful exploitation provides persistent access to the application's backend systems, enabling long-term surveillance and data exfiltration operations. The vulnerability aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications and T1078 for legitimate credentials access through compromised authentication systems.
Mitigation strategies for CVE-2006-0067 must address both immediate remediation and long-term security improvements. The primary solution involves implementing proper input validation and parameterized queries to prevent user-supplied data from being interpreted as sql commands. Organizations should upgrade to VEGO Links Builder versions that have addressed this vulnerability, as the original software versions are no longer supported. Additionally, implementing web application firewalls and input sanitization mechanisms can provide additional protection layers. Database access controls should be reviewed to ensure that application database accounts have minimal required privileges, following the principle of least privilege. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components. The vulnerability also highlights the importance of secure coding practices and proper sql query construction using prepared statements or stored procedures rather than dynamic sql generation. Network segmentation and monitoring solutions can help detect and prevent exploitation attempts by monitoring for suspicious sql injection patterns in network traffic.