CVE-2009-3820 in Fb Filebase
Summary
by MITRE
SQL injection vulnerability in the Flagbit Filebase (fb_filebase) extension 0.1.0 for TYPO3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
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Analysis
by VulDB Data Team • 12/23/2017
The CVE-2009-3820 vulnerability represents a critical SQL injection flaw within the Flagbit Filebase extension version 0.1.0 for the TYPO3 content management system. This vulnerability exposes the platform to remote code execution risks through improper input validation mechanisms that fail to adequately sanitize user-supplied data before incorporating it into database queries. The flaw specifically affects the fb_filebase extension which handles file management operations within TYPO3 environments, creating a pathway for malicious actors to manipulate database operations through crafted input parameters. The vulnerability's severity stems from the extension's failure to implement proper parameterized queries or input sanitization techniques, allowing attackers to inject malicious SQL payloads directly into the database layer.
The technical implementation of this vulnerability occurs when the extension processes user input through unspecified vectors within its file management functionality. Attackers can exploit this weakness by submitting specially crafted parameters that bypass normal input validation checks, enabling them to inject arbitrary SQL commands into the backend database system. This type of vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is directly incorporated into SQL command strings without proper sanitization or parameterization. The attack vector typically involves manipulating URL parameters, form fields, or API calls that the extension uses to interact with the database, creating opportunities for data extraction, modification, or complete system compromise.
The operational impact of CVE-2009-3820 extends far beyond simple data corruption, as successful exploitation can result in complete database compromise, unauthorized access to sensitive information, and potential lateral movement within affected networks. Organizations running TYPO3 installations with the vulnerable fb_filebase extension face significant risks including unauthorized data access, data manipulation, privilege escalation, and possible system takeover. The vulnerability's remote nature means that attackers do not require local system access or credentials to exploit the flaw, making it particularly dangerous in publicly accessible web environments. Security professionals must consider that this vulnerability aligns with ATT&CK technique T1071.004 for application layer protocol manipulation, as attackers can leverage the SQL injection to manipulate the application's database interactions and potentially gain deeper access to system resources.
Mitigation strategies for this vulnerability require immediate action including patching the affected extension to version 0.1.1 or later, which contains the necessary input validation and sanitization fixes. Organizations should implement proper parameterized queries throughout their TYPO3 installations to prevent similar vulnerabilities from occurring in other components. Network-level protections such as web application firewalls and intrusion detection systems can provide additional layers of defense by monitoring for suspicious SQL injection patterns. Security teams must also conduct thorough vulnerability assessments to identify other potentially affected components within their TYPO3 environments and ensure that all third-party extensions undergo regular security reviews. The remediation process should include disabling or removing the vulnerable extension until proper patches are applied, followed by comprehensive testing to verify that the security fixes do not introduce compatibility issues with existing functionality.