CVE-2006-0263 in Database Server
Summary
by MITRE
Multiple unspecified vulnerabilities in Oracle Database server 8.1.7.4, 9.0.1.5, 9.0.1.5 FIPS, 9.2.0.7, 10.1.0.5, and 10.2.0.1 have unspecified impact and attack vectors, as identified by Oracle Vuln# (1) DB09 in the (a) Net Listener component; and (2) DB12 and (3) DB13 in the Network Communications (RPC) component.
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Analysis
by VulDB Data Team • 06/22/2025
The vulnerability described in CVE-2006-0263 represents a critical security weakness within Oracle Database server versions spanning multiple release lines including 8.1.7.4, 9.0.1.5, 9.0.1.5 FIPS, 9.2.0.7, 10.1.0.5, and 10.2.0.1. This vulnerability is particularly concerning as it affects core network components of the database infrastructure, specifically the Net Listener and Network Communications (RPC) modules. The unspecified nature of both the impact and attack vectors suggests that this vulnerability could potentially enable various types of malicious activities ranging from unauthorized access to complete system compromise. The classification of this vulnerability within Oracle's internal tracking system as DB09, DB12, and DB13 indicates that it involves multiple distinct attack surfaces within the database network stack, making the potential attack surface broader than typical single-vulnerability scenarios.
The technical flaw resides in the Oracle Database server's network communication protocols and listener implementations, which are fundamental components responsible for managing database connections and network communications. The Net Listener component serves as the primary interface for client connections to the database, while the Network Communications (RPC) component handles the underlying communication protocols that facilitate data exchange between database processes and external clients. These components are particularly susceptible to attacks that exploit protocol implementation weaknesses, buffer overflows, or authentication bypass mechanisms. The vulnerability's presence in multiple versions suggests it may be a fundamental architectural issue rather than a simple coding error, potentially indicating deeper problems in how the database handles network requests and connection management. This type of vulnerability commonly falls under CWE-119 which addresses "Improper Access of Resource via Pointer Dereference" or similar memory management flaws that can lead to privilege escalation or remote code execution.
The operational impact of this vulnerability extends far beyond simple data integrity concerns, as database servers typically contain sensitive organizational information including financial records, personal data, and business-critical information. An attacker who successfully exploits this vulnerability could potentially gain unauthorized access to the database, extract confidential information, modify data, or even execute arbitrary code on the database server. The attack vectors likely involve network-based exploitation where malicious actors send specially crafted network packets to the database listener, potentially leveraging the RPC communication protocols to manipulate the database server's behavior. This vulnerability particularly affects organizations that rely on Oracle Database servers for their core business operations, as database compromise can lead to significant financial losses, regulatory violations, and operational disruption. The vulnerability's classification under ATT&CK framework would likely map to T1071.004 for Application Layer Protocol and T1046 for Network Service Scanning, representing the techniques used to identify and exploit database services.
Organizations should implement immediate mitigation strategies including applying Oracle's official security patches and updates that address the specific vulnerabilities identified in the DB09, DB12, and DB13 categories. Network segmentation and firewall rules should be implemented to restrict access to database ports and services, particularly limiting direct database access from untrusted networks. The principle of least privilege should be enforced by ensuring database accounts have minimal required permissions and that database services run with reduced privileges. Regular network monitoring and intrusion detection systems should be deployed to identify suspicious network traffic patterns that might indicate exploitation attempts. Additionally, organizations should conduct thorough vulnerability assessments to identify all instances of affected Oracle Database versions within their infrastructure and implement network-based security controls such as IDS/IPS systems specifically configured to detect and prevent exploitation attempts targeting these database components. The remediation process should include not only patching but also comprehensive security audits of database configurations and network access controls to prevent similar vulnerabilities from existing in other parts of the database infrastructure.