CVE-2007-2109 in Database Server
Summary
by MITRE
Multiple unspecified vulnerabilities in Oracle Database 10.2.0.3 have unknown impact and remote authenticated attack vectors related to (1) Rules Manager and Expression Filter components (DB02) and (2) Oracle Streams (DB06). Note: as of 20070424, Oracle has not disputed reliable claims that DB02 is for a race condition in the RLMGR_TRUNCATE_MAINT trigger in the Rules Manager and Expression Filter components changing the AUTHID of a package from DEFINER to CURRENT_USER after a TRUNCATE call, and DB06 is for SQL injection in the DBMS_APPLY_USER_AGENT.SET_REGISTRATION_HANDLER procedure, which is later passed to the DBMS_APPLY_ADM_INTERNAL.ALTER_APPLY procedure, aka "Oracle Streams".
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Analysis
by VulDB Data Team • 07/14/2021
The vulnerability identified as CVE-2007-2109 represents a critical security weakness within Oracle Database 10.2.0.3 affecting multiple components including Rules Manager and Expression Filter as well as Oracle Streams. This vulnerability manifests through two distinct attack vectors that together create significant exposure for database systems. The first vector involves a race condition within the RLMGR_TRUNCATE_MAINT trigger located in the Rules Manager and Expression Filter components, while the second vector presents a SQL injection vulnerability in Oracle Streams functionality. Both vulnerabilities require authenticated access but can be exploited remotely, making them particularly dangerous in environments where database access is granted to external users or applications.
The race condition vulnerability in the Rules Manager and Expression Filter components specifically targets the RLMGR_TRUNCATE_MAINT trigger where the AUTHID of a package changes from DEFINER to CURRENT_USER after a TRUNCATE operation is executed. This behavioral change creates an exploitable condition where an attacker can manipulate the security context of database operations, potentially allowing privilege escalation or unauthorized access to sensitive database resources. The vulnerability stems from improper handling of database object ownership and execution context during truncate operations, which violates fundamental security principles of privilege management. According to CWE classification, this represents a race condition vulnerability (CWE-362) that can lead to privilege escalation and unauthorized access to database objects.
The second vulnerability within Oracle Streams manifests as a SQL injection flaw in the DBMS_APPLY_USER_AGENT.SET_REGISTRATION_HANDLER procedure. This procedure accepts user input that is subsequently passed to the DBMS_APPLY_ADM_INTERNAL.ALTER_APPLY procedure, creating a direct path for SQL injection attacks. The vulnerability allows attackers to inject malicious SQL code that can be executed within the database context, potentially enabling data manipulation, unauthorized access to database objects, or even complete database compromise. This type of vulnerability falls under the ATT&CK framework category of SQL Injection (T1071.005) and represents a classic input validation failure that can be exploited to bypass security controls and execute arbitrary database commands.
The operational impact of these vulnerabilities extends beyond simple privilege escalation, as they can enable attackers to perform sophisticated attacks that compromise the integrity and confidentiality of database systems. The combination of a race condition vulnerability with SQL injection capabilities creates a powerful attack surface that can be leveraged for persistent access to database resources. Organizations running Oracle Database 10.2.0.3 are particularly vulnerable since these vulnerabilities can be exploited by authenticated users with minimal privileges, potentially allowing attackers to escalate their access and gain unauthorized access to sensitive data. The remote nature of these attacks means that attackers do not need physical access to the database infrastructure, making the vulnerabilities particularly concerning for organizations with public database access or those that expose database services over networks.
Mitigation strategies for CVE-2007-2109 should focus on immediate patching of affected Oracle Database installations to the latest security patches released by Oracle. Organizations should also implement network segmentation to limit access to database systems and ensure that only authorized users with appropriate privileges can access database components. Additionally, database administrators should conduct thorough security audits of existing database objects to identify potential exploitation paths and implement proper input validation controls. The vulnerability highlights the importance of maintaining up-to-date security patches and proper database access controls, as both components of this vulnerability could be exploited through insufficient access controls and inadequate input validation mechanisms. Security monitoring should be enhanced to detect unusual database activity patterns that might indicate exploitation attempts, particularly around TRUNCATE operations and SQL injection attempts in database streams components.