CVE-2010-3731 in db2
Summary
by MITRE
Stack-based buffer overflow in the validateUser implementation in the com.ibm.db2.das.core.DasSysCmd function in db2dasrrm in the DB2 Administration Server (DAS) component in IBM DB2 9.1 before FP10, 9.5 before FP6a, and 9.7 before FP3 allows remote attackers to execute arbitrary code via a long username string.
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Analysis
by VulDB Data Team • 01/20/2025
The vulnerability identified as CVE-2010-3731 represents a critical stack-based buffer overflow flaw within IBM DB2's Administration Server component. This vulnerability exists in the validateUser implementation of the com.ibm.db2.das.core.DasSysCmd function, specifically within the db2dasrrm module that handles administrative operations. The flaw affects multiple versions of IBM DB2 including 9.1 before fix pack 10, 9.5 before fix pack 6a, and 9.7 before fix pack 3, making it a widespread issue across several major releases. The vulnerability manifests when the system processes user authentication requests through the administration server, creating a potential attack vector for remote exploitation.
The technical nature of this vulnerability stems from improper input validation within the DasSysCmd function where user-provided username strings are processed without adequate bounds checking. When an attacker submits a username string that exceeds the allocated buffer space on the stack, the overflow occurs, potentially allowing arbitrary code execution. This type of vulnerability falls under CWE-121 Stack-based Buffer Overflow, which is classified as a direct consequence of insufficient bounds checking in memory allocation. The vulnerability operates at the application layer and specifically targets the DB2 Administration Server's authentication mechanism, making it particularly dangerous for database administrators who rely on this component for system management.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to gain unauthorized access to database administration functions. Remote attackers can leverage this flaw to execute arbitrary code with the privileges of the DB2 Administration Server process, potentially leading to complete system compromise. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1059 Command and Scripting Interpreter and T1068 Exploitation for Privilege Escalation. The implications are severe for database environments where the administration server is accessible over the network, as attackers could gain control over database configurations, user accounts, and potentially access sensitive data stored within the database systems.
Organizations affected by this vulnerability should immediately implement mitigations including applying the appropriate IBM fix packs for their DB2 versions, restricting network access to the DB2 Administration Server, and implementing network segmentation to limit exposure. The recommended approach involves patching the system to the latest available fix packs that address the buffer overflow in the DasSysCmd function. Additionally, administrators should consider disabling unnecessary administrative services, implementing strong authentication mechanisms, and monitoring for suspicious authentication attempts that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation and memory management in database server applications, particularly those handling authentication and administrative functions where security implications can be catastrophic.