CVE-2013-4032 in DB2
Summary
by MITRE
The Fast Communications Manager (FCM) in IBM DB2 Enterprise Server Edition and Advanced Enterprise Server Edition 10.1 before FP3 and 10.5, when a multi-node configuration is used, allows remote attackers to cause a denial of service via vectors involving arbitrary data.
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Analysis
by VulDB Data Team • 05/26/2021
The vulnerability identified as CVE-2013-4032 resides within the Fast Communications Manager component of IBM DB2 Enterprise Server Edition and Advanced Enterprise Server Edition versions 10.1 before fix pack 3 and 10.5. This represents a critical denial of service weakness that specifically manifests when the database system operates in a multi-node configuration environment. The Fast Communications Manager serves as a crucial communication layer responsible for facilitating data exchange between database nodes in distributed setups, making it a prime target for exploitation in clustered database environments where system availability is paramount.
The technical flaw stems from insufficient input validation and error handling mechanisms within the FCM component when processing incoming data communications. Attackers can exploit this weakness by crafting specially malformed or arbitrary data packets that, when processed by the communication manager, trigger unexpected system behavior leading to service disruption. The vulnerability does not require authentication for exploitation, making it particularly dangerous as any remote attacker with network access to the database system can potentially initiate the denial of service attack. This weakness falls under the category of improper input validation as defined by CWE-20, where the system fails to properly validate or sanitize data received from external sources before processing.
The operational impact of this vulnerability extends beyond simple service interruption, as it can severely compromise the availability and reliability of database systems in production environments. In multi-node configurations where database clustering is utilized for high availability and load distribution, a successful exploitation can cause cascading failures across the entire database cluster. This disruption can result in extended downtime for critical business applications that depend on the database system, potentially leading to significant financial losses and damage to organizational reputation. The vulnerability particularly affects enterprise environments where database availability is critical for business operations, making it a high-priority concern for security teams managing mission-critical systems.
Organizations affected by this vulnerability should immediately implement the vendor-provided fix pack updates for IBM DB2 versions 10.1 and 10.5 to address the underlying communication layer flaw. Network segmentation and firewall rules should be implemented to restrict unnecessary access to database ports and services, while monitoring systems should be enhanced to detect anomalous communication patterns that may indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to the T1499.004 technique related to network denial of service, and the T1071.004 technique for application layer protocol usage. The mitigation strategy should include regular patch management processes, network access controls, and continuous monitoring of database communication patterns to identify and respond to potential exploitation attempts before they can cause service disruption.