CVE-2022-39135: Apache Calcite: potential XEE attacks

[Ruben Q L <rubenql () apache org>]

Description:

In Apache Calcite prior to version 1.32.0 the SQL operators EXISTS_NODE, EXTRACT_XML, XML_TRANSFORM and EXTRACT_VALUE 
do not restrict XML External Entity references in their configuration, which makes them vulnerable to a potential XML 
External Entity (XXE) attack. Therefore any client exposing these operators, typically by using Oracle dialect (the 
first three) or MySQL dialect (the last one), is affected by this vulnerability (the extent of it will depend on the 
user under which the application is running).

> From Apache Calcite 1.32.0 onwards, Document Type Declarations and XML External Entity resolution are disabled on the 
> impacted operators.

Credit:

Apache Calcite would like to thank David Handermann for reporting this issue