IBM Db2 Denial-of-Service Vulnerability via Specially Crafted Queries

A denial-of-service vulnerability has been identified in IBM Db2 for Linux, UNIX, and Windows, including DB2 Connect Server, versions 11.5.0 through 11.5.9. This vulnerability allows an authenticated user to disrupt service by sending specially crafted queries that exploit QGM objects with specific subquery expressions.

Impact

Exploitation of this vulnerability leads to a denial-of-service condition, causing a disruption in service availability.

Remediation

Users can download a special build containing the interim fix for this vulnerability from Fix Central. This special build is available for version 11.5.9 and can be applied to any affected level of the 11.5 release.