CVE-2006-2189 in sBLOG
Summary
by MITRE
SQL injection vulnerability in search.php in Servous sBLOG 0.7.2 allows remote attackers to execute arbitrary SQL commands via the keyword parameter. NOTE: this issue can be used to trigger path disclosure. In addition, it might be primary to vector 1 in CVE-2006-1135.
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Analysis
by VulDB Data Team • 06/17/2019
The vulnerability identified as CVE-2006-2189 represents a critical sql injection flaw in the Servous sBLOG 0.7.2 web application, specifically within the search.php script. This vulnerability arises from inadequate input validation and sanitization of the keyword parameter, which is processed directly into sql queries without proper escaping or parameterization. The flaw enables remote attackers to inject malicious sql code through the search functionality, potentially compromising the entire database backend. The vulnerability operates at the application layer and demonstrates poor secure coding practices that violate fundamental security principles.
The technical exploitation of this vulnerability occurs when an attacker submits crafted sql payload through the keyword parameter in search.php. The application fails to properly sanitize user input before incorporating it into database queries, allowing attackers to manipulate the sql execution flow. This type of vulnerability maps directly to CWE-89, which defines sql injection as the insertion of malicious sql fragments into input data that is then processed by an sql interpreter. The attack vector specifically targets the parameter handling mechanism in the search functionality, where user-supplied data bypasses all security controls and is directly executed by the database engine.
The operational impact of CVE-2006-2189 extends beyond simple data extraction to include complete database compromise and potential system infiltration. Attackers can leverage this vulnerability to execute arbitrary sql commands, potentially gaining access to sensitive user data, administrative credentials, or even system-level information. The vulnerability also serves as a potential precursor to more severe attacks, as noted in the advisory's mention of its relationship to CVE-2006-1135. Additionally, the vulnerability can be used to trigger path disclosure, exposing sensitive server paths and configuration details that could aid in further exploitation efforts. This path disclosure capability aligns with attack patterns found in the ATT&CK framework under the reconnaissance and credential access phases, where adversaries gather system information to plan subsequent attacks.
The remediation approach for this vulnerability requires immediate implementation of proper input validation and parameterized queries throughout the application codebase. Developers must ensure all user-supplied data undergoes strict sanitization before database processing, with particular attention to the search.php script and its keyword parameter handling. The solution involves implementing prepared statements or parameterized queries to separate sql code from data, preventing the injection of malicious sql fragments. Security measures should also include input length validation, character set filtering, and comprehensive error handling that does not reveal database structure information. Organizations should conduct thorough code reviews to identify similar vulnerabilities in other application components and implement web application firewalls to provide additional protection layers. The vulnerability's classification as a primary vector in related CVE-2006-1135 underscores the importance of addressing such fundamental security flaws promptly to prevent cascading impacts on overall system security posture.