CVE-2007-4919 in JBlog
Summary
by MITRE
Multiple SQL injection vulnerabilities in JBlog 1.0 allow (1) remote attackers to execute arbitrary SQL commands via the id parameter to index.php, and allow (2) remote authenticated administrators to execute arbitrary SQL commands via the id parameter to admin/modifpost.php.
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Analysis
by VulDB Data Team • 10/07/2024
The vulnerability identified as CVE-2007-4919 represents a critical SQL injection flaw affecting JBlog 1.0 software, demonstrating a fundamental weakness in input validation and query construction processes. This vulnerability exists within the web application's handling of user-supplied data, specifically when processing the id parameter through two distinct endpoints. The flaw allows for unauthorized execution of arbitrary SQL commands, potentially enabling attackers to gain complete control over the underlying database system and access sensitive information stored within the application's data repository.
The technical implementation of this vulnerability stems from improper sanitization of user input parameters before incorporating them into SQL query structures. When the id parameter is passed to index.php without adequate validation or escaping mechanisms, malicious actors can inject specially crafted SQL payloads that bypass normal authentication and authorization controls. Similarly, the admin/modifpost.php endpoint presents the same risk to authenticated administrators, suggesting that the vulnerability exists at the core application logic level rather than being limited to specific user roles or access contexts. This dual exposure increases the attack surface significantly, as both unauthenticated and authenticated threat actors can exploit the flaw.
From an operational impact perspective, this vulnerability creates substantial risk for organizations deploying JBlog 1.0 systems, as it allows for complete database compromise through remote execution of malicious SQL commands. Attackers could potentially extract sensitive user credentials, personal information, and application data, while also modifying or deleting database content. The vulnerability's classification aligns with CWE-89 which specifically addresses SQL injection weaknesses in software applications. The attack vector enables privilege escalation and data exfiltration, making it particularly dangerous for systems handling sensitive information.
The exploitation of this vulnerability follows standard SQL injection attack patterns where attackers craft malicious input strings containing SQL syntax that gets executed within the application's database context. The fact that both public and administrative endpoints are vulnerable suggests that the application lacks proper input validation at multiple points in its codebase, indicating poor security design practices. Organizations should consider implementing comprehensive input validation, parameterized queries, and proper access controls to prevent such vulnerabilities from being exploited. The ATT&CK framework categorizes this as a database access technique under the privilege escalation and credential access domains, emphasizing the need for robust database security measures and regular vulnerability assessments to prevent unauthorized data access and manipulation.