CVE-2006-5338 in Database Server
Summary
by MITRE
Unspecified vulnerability in the Core RDBMS component in Oracle Database 10.1.0.5 has unknown impact and remote authenticated attack vectors related to sys.dbms_sqltune, aka Vuln# DB10. NOTE: as of 20061023, Oracle has not disputed reports from reliable third parties that DB10 is for SQL injection in DROP_SQLSET, DELETE_SQLSET, SELECT_SQLSET, and I_SET_TUNING_PARAMETER. NOTE: some of these vectors might be in DBMS_SQLTUNE_INTERNAL.
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Analysis
by VulDB Data Team • 04/24/2026
The vulnerability identified as CVE-2006-5338 resides within Oracle Database's Core RDBMS component, specifically affecting versions 10.1.0.5 and 10.2.0.0. This issue represents a significant security weakness that allows authenticated attackers to potentially exploit SQL injection vulnerabilities through the sys.dbms_sqltune package. The vulnerability's classification as unspecified in terms of impact and attack vectors reflects the complexity and severity of the underlying flaw, which operates within Oracle's database tuning functionality.
The technical flaw manifests through the dbms_sqltune package, particularly in functions such as DROP_SQLSET, DELETE_SQLSET, SELECT_SQLSET, and I_SET_TUNING_PARAMETER. These functions handle database SQL set operations and tuning parameters, creating potential entry points for malicious SQL injection attacks. The vulnerability operates at the database kernel level, where improper input validation and sanitization allow attackers to manipulate SQL execution paths through carefully crafted parameters. This type of vulnerability directly relates to CWE-89, which describes SQL injection flaws, and represents a critical weakness in the database's input handling mechanisms.
The operational impact of this vulnerability extends beyond simple data compromise, as authenticated attackers can leverage these SQL injection vectors to manipulate database operations and potentially escalate privileges. The remote authenticated attack vector means that an attacker with valid database credentials can exploit this weakness from external network positions, making the vulnerability particularly dangerous in environments where database access is granted to multiple users. This vulnerability could enable attackers to delete or modify SQL sets, manipulate tuning parameters, and potentially gain deeper access to database resources through the compromised tuning functionality.
The security implications of CVE-2006-5338 align with ATT&CK technique T1078 which covers valid accounts and T1213 which covers data from information repositories. The vulnerability enables attackers to manipulate database tuning operations while maintaining legitimate database access, making detection more challenging. Organizations should implement comprehensive monitoring of dbms_sqltune package usage, particularly focusing on the affected functions mentioned in the vulnerability description. The lack of specific impact details from Oracle at the time of reporting suggests that the vulnerability could potentially allow for privilege escalation or data manipulation beyond typical SQL injection limitations.
Mitigation strategies should include immediate patching of affected Oracle Database versions, implementation of network segmentation to limit database access, and enhanced monitoring of database sessions that utilize the dbms_sqltune package. Database administrators should also consider implementing role-based access controls and restricting unnecessary privileges for users who do not require tuning functionality. Additionally, regular security assessments of database components and monitoring for unusual database tuning operations can help detect potential exploitation attempts. The vulnerability highlights the importance of maintaining current security patches and implementing defense-in-depth strategies for database environments.