CVE-2007-0270 in Database Server
Summary
by MITRE
Buffer overflow in SYS.DBMS_DRS in Oracle Database 9.2.0.7 and 10.1.0.4 allows remote authenticated users to cause a denial of service (crash) or execute arbitrary code via the GET_PROPERTY function in SYS.DBMS_DRS, aka DB03.
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Analysis
by VulDB Data Team • 04/07/2017
The vulnerability identified as CVE-2007-0270 represents a critical buffer overflow flaw within Oracle Database's SYS.DBMS_DRS package, specifically affecting versions 9.2.0.7 and 10.1.0.4. This vulnerability resides in the GET_PROPERTY function of the Database Resource Manager package, which is part of Oracle's database management system architecture. The flaw manifests when the database processes input parameters through this function, creating an exploitable condition that can be leveraged by authenticated remote attackers. The vulnerability classification aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a significant security risk within enterprise database environments where Oracle Database serves as a critical data repository.
The technical implementation of this vulnerability involves improper input validation within the GET_PROPERTY function of SYS.DBMS_DRS. When an authenticated user submits crafted input parameters to this function, the database fails to properly bounds-check the input data before copying it into internal buffers. This insufficient validation allows an attacker to overflow the allocated memory space, potentially leading to arbitrary code execution or system crash. The attack vector requires authentication, meaning that an attacker must first establish valid database credentials before exploiting this vulnerability. The flaw operates at the application layer of the database system, specifically within the resource management subsystem that controls database resource allocation and monitoring. This type of vulnerability falls under the ATT&CK technique T1059.006 for command and scripting interpreter, as successful exploitation could enable attackers to execute arbitrary commands within the database environment.
The operational impact of CVE-2007-0270 extends beyond simple denial of service scenarios to encompass potential complete system compromise. A successful exploitation could allow an attacker to execute arbitrary code with the privileges of the database service account, potentially leading to unauthorized data access, modification, or deletion. The vulnerability could also result in database crashes that disrupt business operations and require system administrators to perform emergency restarts and recovery procedures. Organizations relying on Oracle Database for mission-critical applications face significant risk from this vulnerability, as database crashes could impact multiple dependent applications and services. The vulnerability affects the integrity and availability of database resources, potentially compromising the entire data infrastructure that supports enterprise operations. Additionally, the authenticated nature of the attack means that insider threats or compromised accounts could exploit this vulnerability, making it particularly dangerous for organizations with less stringent access controls.
Mitigation strategies for CVE-2007-0270 should prioritize immediate patch application from Oracle, as this vulnerability was addressed in subsequent database releases. Organizations should implement comprehensive access control measures, including regular credential rotation and principle of least privilege enforcement, to limit the potential impact of compromised accounts. Network segmentation and database firewalling can help reduce the attack surface by limiting direct access to database systems. Monitoring and logging of database activity should be enhanced to detect suspicious parameter usage patterns that might indicate exploitation attempts. Database administrators should conduct regular security assessments and vulnerability scanning to identify similar issues within their database environments. The implementation of database activity monitoring solutions can help detect anomalous behavior that might indicate exploitation of this vulnerability. Organizations should also maintain current security patches and follow Oracle's security bulletins to stay informed about similar vulnerabilities in their database infrastructure. Regular security training for database administrators and security personnel helps ensure proper incident response procedures are in place should exploitation occur.