CVE-2012-3324 in DB2
Summary
by MITRE
Directory traversal vulnerability in the UTL_FILE module in IBM DB2 and DB2 Connect 10.1 before FP1 on Windows allows remote authenticated users to modify, delete, or read arbitrary files via a pathname in the file field.
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Analysis
by VulDB Data Team • 04/14/2021
The vulnerability identified as CVE-2012-3324 represents a critical directory traversal flaw within IBM DB2 and DB2 Connect 10.1 before FP1 on Windows platforms. This security weakness resides in the UTL_FILE module, which is designed to provide file system access capabilities for database operations. The vulnerability enables remote authenticated attackers to exploit improper input validation mechanisms that fail to adequately sanitize file path specifications, allowing malicious users to navigate beyond intended directory boundaries and access arbitrary files on the underlying operating system.
The technical exploitation of this vulnerability occurs through the manipulation of pathname parameters within the file field of UTL_FILE operations. When the database processes file system requests, it does not sufficiently validate or sanitize the input paths, creating opportunities for attackers to craft malicious path sequences that traverse directories using standard traversal operators. This flaw directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as directory traversal or path traversal attacks. The vulnerability specifically affects Windows environments where the UTL_FILE functionality is implemented, making it particularly concerning for database administrators managing Windows-based DB2 deployments.
The operational impact of this directory traversal vulnerability extends beyond simple data access, as authenticated attackers can potentially modify, delete, or read arbitrary files on the database server. This capability enables attackers to access sensitive system files, configuration data, database credentials, and other confidential information that may be stored in accessible directories. The remote nature of the attack means that an authenticated user with minimal privileges can leverage this vulnerability to escalate their access level and potentially compromise the entire database server infrastructure. The implications are severe as database servers often contain critical business data and system configuration information that could be exploited for further attacks within the network.
Security professionals should implement immediate mitigations including applying the relevant IBM security fixes and hotfixes to address the vulnerability in DB2 and DB2 Connect 10.1 environments. Organizations should also consider implementing network segmentation and access controls to limit authentication privileges to database operations. The principle of least privilege should be enforced where database users only receive necessary permissions to perform their specific functions. Additionally, monitoring and logging of UTL_FILE operations should be implemented to detect potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1059 for command and scripting interpreter and T1566 for credential access, as attackers can leverage the compromised database to gain access to system credentials and potentially escalate privileges. Database administrators should also review and restrict file system access permissions for database users, ensuring that only authorized personnel can perform file system operations through database interfaces.