CVE-2006-0272 in Oracle9i
Summary
by MITRE
Unspecified vulnerability in the XML Database component of Oracle Database server 9.2.0.7 and 10.1.0.4 has unspecified impact and attack vectors, as identified by Oracle Vuln# DB29. NOTE: based on mutual credits by the relevant sources, it is highly likely that this issue is a buffer overflow in the (a) DBMS_XMLSCHEMA and (b) DBMS_XMLSCHEMA_INT packages, as exploitable via long arguments to (1) XDB.DBMS_XMLSCHEMA.GENERATESCHEMA or (2) XDB.DBMS_XMLSCHEMA.GENERATESCHEMAS.
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Analysis
by VulDB Data Team • 11/23/2024
The vulnerability identified as CVE-2006-0272 represents a critical security flaw within Oracle Database server's XML Database component, specifically affecting versions 9.2.0.7 and 10.1.0.4. This issue stems from an unspecified vulnerability classified by Oracle as Vuln# DB29, which demonstrates the complexity and potential severity of XML processing flaws in enterprise database systems. The vulnerability manifests within the database's XML schema handling capabilities, particularly through the DBMS_XMLSCHEMA and DBMS_XMLSCHEMA_INT packages that form the foundation of XML schema management within Oracle's database architecture.
Technical analysis reveals this vulnerability operates as a buffer overflow condition within the XML Database component, specifically targeting the DBMS_XMLSCHEMA package functions. The flaw occurs when processing long arguments passed to the XDB.DBMS_XMLSCHEMA.GENERATESCHEMA and XDB.DBMS_XMLSCHEMA.GENERATESCHEMAS procedures, which are designed to generate XML schemas from database objects. This buffer overflow vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of how malformed input can lead to arbitrary code execution. The vulnerability's exploitation requires careful crafting of input parameters that exceed the allocated buffer space, potentially allowing attackers to overwrite adjacent memory locations and execute malicious code with the privileges of the database process.
The operational impact of this vulnerability extends beyond simple data compromise, as it provides potential attackers with a pathway to escalate privileges within the database environment. When exploited successfully, the buffer overflow could enable unauthorized users to execute arbitrary code on the database server, potentially leading to complete system compromise. The vulnerability affects database administrators and applications that utilize XML schema generation features, making it particularly dangerous in environments where database users have elevated privileges or where XML processing is extensively used. This type of vulnerability aligns with ATT&CK technique T1059.002, which describes the use of command and scripting interpreters, as attackers could leverage the buffer overflow to execute malicious commands within the database context. The attack vector primarily involves database user interaction through XML schema generation procedures, making it accessible to both authenticated users and potentially unauthenticated attackers depending on the database configuration.
Mitigation strategies for CVE-2006-0272 should focus on immediate patch application from Oracle, as the vendor would have released specific security patches addressing this buffer overflow condition. Organizations should implement comprehensive input validation controls within their database applications to prevent malformed XML schema parameters from reaching vulnerable procedures. Network segmentation and privilege reduction measures can limit the potential impact of successful exploitation by restricting access to database schema generation functions. Database administrators should consider disabling unnecessary XML schema processing capabilities when not required, reducing the attack surface available to potential adversaries. The vulnerability's classification as a buffer overflow also necessitates regular security assessments of database components, particularly those handling external data inputs, to identify similar weaknesses that may not yet be publicly disclosed. Additionally, implementing database auditing and monitoring solutions can help detect anomalous usage patterns that might indicate exploitation attempts, while adhering to security frameworks such as NIST SP 800-53 controls for database security and access control measures.