OpenLink Virtuoso Denial-of-Service Vulnerability in dfe_unit_gb_dependant Component

A denial-of-service vulnerability has been identified in OpenLink Virtuoso Open Source version 7.2.11. The issue arises in the dfe_unit_gb_dependant component, where attackers can cause a service disruption by executing crafted SQL statements. This vulnerability can be reproduced using the beta Docker image of Virtuoso 7.2.11.

Impact

Exploitation of this vulnerability leads to a crash of the Virtuoso database server, causing a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by creating a SQL file with a specific payload that exploits the dfe_unit_gb_dependant component. After removing any existing Docker container named 'virtdb_test', a new container can be started with the Virtuoso 7.2.11 image. Once the server is running, the SQL file can be executed using the isql command-line interface, which will trigger the denial-of-service condition by crashing the Virtuoso server.