CVE-2009-4339 in Mf Subscription
Summary
by MITRE
SQL injection vulnerability in the Subscription (mf_subscription) extension 0.2.2 for TYPO3 allows remote attackers to execute arbitrary SQL commands via unknown vectors.
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Analysis
by VulDB Data Team • 12/19/2017
The CVE-2009-4339 vulnerability represents a critical sql injection flaw within the mf_subscription extension version 022 for the TYPO3 content management system. This vulnerability exposes the system to remote code execution risks through improper input validation mechanisms that fail to sanitize user-supplied data before incorporating it into sql queries. The vulnerability specifically affects the subscription functionality of the extension, where user inputs are processed without adequate sanitization, creating opportunities for malicious actors to manipulate database operations through crafted sql commands. The attack vector remains unspecified in the original description, suggesting that the vulnerability may exist across multiple input points within the subscription module, making it particularly dangerous as attackers can potentially exploit various entry points to achieve their objectives.
The technical implementation of this vulnerability stems from the extension's failure to properly escape or parameterize user inputs when constructing sql statements. This classic sql injection weakness allows attackers to inject malicious sql fragments that bypass authentication mechanisms and gain unauthorized access to database resources. The vulnerability operates at the application layer where user-provided parameters are directly concatenated into sql queries without proper validation or sanitization processes. According to cwE-89 standards, this represents a direct sql injection attack pattern where attacker-controlled data flows into sql command execution contexts. The lack of input filtering creates a pathway for attackers to manipulate the underlying database structure, potentially leading to data theft, modification, or complete system compromise. The vulnerability's impact is amplified by the fact that it affects a widely used cms platform like TYPO3, which may host sensitive organizational data.
From an operational perspective, this vulnerability poses significant risks to organizations utilizing the affected TYPO3 extension, as it enables remote attackers to execute arbitrary sql commands without requiring authentication credentials. The potential impact includes unauthorized data access, data corruption, and complete database compromise. Attackers can leverage this vulnerability to extract sensitive information such as user credentials, personal data, or business-critical information stored within the database. The attack surface expands beyond simple data theft, as malicious actors can modify or delete database records, potentially disrupting business operations and violating regulatory compliance requirements. Organizations may face severe consequences including financial losses, reputational damage, and legal liabilities due to data breaches resulting from this vulnerability. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access to the target system.
Mitigation strategies for CVE-2009-4339 should prioritize immediate patching of the affected TYPO3 extension to version 023 or later, which includes proper input validation and sql parameterization mechanisms. Organizations must implement comprehensive input sanitization processes that validate and escape all user-supplied data before processing, following established security practices such as those outlined in the owasp top ten. Database access controls should be strictly enforced through proper privilege management, ensuring that applications use minimal required database permissions and that sensitive operations are protected through proper authentication mechanisms. Network-level protections including firewall rules, intrusion detection systems, and web application firewalls can provide additional layers of defense against exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the broader application ecosystem. According to the mitre att&ck framework, this vulnerability maps to the execution and credential access tactics, emphasizing the need for both preventive controls and monitoring capabilities to detect potential exploitation attempts. Organizations should also maintain updated incident response procedures specifically addressing sql injection attacks to ensure rapid response and remediation when such vulnerabilities are discovered or exploited.