CVE-2015-4612 in Frequently Asked Questions Extension
Summary
by MITRE
SQL injection vulnerability in the "FAQ - Frequently Asked Questions" (js_faq) extension before 1.2.1 for TYPO3 allows remote authenticated users to execute arbitrary SQL commands via unspecified vectors.
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Analysis
by VulDB Data Team • 04/08/2019
The CVE-2015-4612 vulnerability represents a critical sql injection flaw within the js_faq extension for TYPO3 content management systems. This vulnerability specifically affects versions prior to 1.2.1 and creates a significant security risk for organizations relying on TYPO3 for their web presence. The vulnerability exists within the frequently asked questions module, which is a common feature in many TYPO3 installations, making it a prime target for exploitation by malicious actors. The flaw allows authenticated users to manipulate sql queries through unspecified vectors, potentially leading to complete database compromise and unauthorized access to sensitive information.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the js_faq extension's database query construction process. When authenticated users interact with the FAQ module, the extension fails to properly sanitize user-supplied parameters before incorporating them into sql statements. This creates an environment where malicious input can alter the intended sql query structure, allowing attackers to inject arbitrary sql commands. The vulnerability classification aligns with CWE-89 which specifically addresses sql injection weaknesses in software applications. The attack vector leverages the fact that the extension does not properly escape or validate user input before database processing, creating a direct path for sql command injection.
From an operational impact perspective, this vulnerability poses severe risks to organizations using TYPO3 with the js_faq extension. Authenticated users who can access the FAQ module can potentially escalate their privileges to execute arbitrary sql commands on the underlying database server. This could result in data theft, data modification, or even complete database compromise. The vulnerability is particularly dangerous because it requires only authenticated access, meaning that insiders or attackers who have gained legitimate access to the system can exploit this flaw. The implications extend beyond immediate data loss, as successful exploitation could lead to persistent backdoors, system compromise, and broader network infiltration. Organizations may face regulatory compliance issues and reputational damage if sensitive data is compromised through this vulnerability.
Mitigation strategies for CVE-2015-4612 must prioritize immediate patching of the js_faq extension to version 1.2.1 or later, which contains the necessary security fixes. Organizations should also implement proper input validation and sanitization measures within their TYPO3 installations, ensuring that all user-supplied data is properly escaped before database processing. Network segmentation and access controls should be strengthened to limit the potential impact of successful exploitation attempts. Additionally, organizations should conduct comprehensive security assessments of their TYPO3 installations to identify similar vulnerabilities in other extensions or custom code. The remediation process should include monitoring for suspicious database activities and implementing proper logging mechanisms to detect potential exploitation attempts. Regular security updates and vulnerability scanning should become standard practice to prevent similar issues from arising in the future, aligning with security best practices outlined in the ATT&CK framework under the persistence and privilege escalation domains.