CVE-2022-22483 in DB2
Summary
by MITRE • 09/14/2022
IBM Db2 for Linux, UNIX and Windows 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to an information disclosure in some scenarios due to unauthorized access caused by improper privilege management when CREATE OR REPLACE command is used. IBM X-Force ID: 225979.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/16/2022
The vulnerability identified as CVE-2022-22483 affects IBM Db2 database management systems across multiple versions including 9.7, 10.1, 10.5, 11.1, and 11.5 for Linux, UNIX, and Windows platforms. This issue stems from improper privilege management during the execution of CREATE OR REPLACE commands, creating a scenario where unauthorized users can potentially access sensitive information. The vulnerability represents a significant security weakness in database access control mechanisms that could allow attackers to extract confidential data through manipulated database operations. The improper privilege management directly violates fundamental security principles that should prevent unauthorized access to database resources.
The technical flaw manifests when database users execute CREATE OR REPLACE commands without proper authorization checks. This command sequence allows for the replacement of existing database objects such as views, procedures, or functions, but in vulnerable versions of IBM Db2, the system fails to adequately verify user privileges before permitting these operations. The vulnerability specifically impacts scenarios where users with insufficient privileges attempt to replace database objects, yet the system incorrectly grants access or fails to properly enforce access controls. This misconfiguration creates an information disclosure risk where unauthorized individuals can potentially access data they should not be permitted to view. The flaw operates at the privilege escalation level and can be classified under CWE-284 Access Control Issues, specifically related to inadequate access control mechanisms during database object manipulation.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential data integrity and confidentiality breaches. Attackers exploiting this weakness could gain access to sensitive database objects, potentially exposing proprietary information, user data, or system configurations. The vulnerability particularly affects organizations using IBM Db2 in environments where multiple users have varying levels of database access rights, as the improper privilege management creates pathways for unauthorized data access. Organizations relying on Db2 for mission-critical applications face significant risks including regulatory compliance violations, data breaches, and potential financial losses. The vulnerability can be leveraged by both internal and external threat actors, making it particularly concerning for enterprises with complex database environments and multiple user access levels. This weakness aligns with ATT&CK technique T1078 Valid Accounts, as it exploits legitimate user accounts to gain unauthorized access through privilege escalation mechanisms within the database system.
Mitigation strategies for CVE-2022-22483 should prioritize immediate implementation of IBM's security patches and updates as released through their official support channels. Organizations must conduct thorough privilege assessments to ensure that database users have only the minimum necessary access rights required for their operational functions. Database administrators should implement strict access control policies and regularly audit user permissions to prevent unauthorized access to sensitive database objects. Additional protective measures include disabling unnecessary database commands, implementing robust monitoring of CREATE OR REPLACE operations, and establishing comprehensive logging of all database access attempts. Security teams should also consider implementing database activity monitoring solutions that can detect anomalous privilege usage patterns and alert administrators to potential exploitation attempts. The vulnerability highlights the critical importance of maintaining current security patches and following defense-in-depth strategies that include multiple layers of access control and monitoring mechanisms to protect against similar privilege escalation issues.