CVE-2022-31099: Uncontrolled Recursion in rulex

When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately.

This is a security concern for you, if

• your service parses untrusted rulex expressions (expressions provided by an untrusted user), and
• your service becomes unavailable when the process running rulex aborts due to a stack overflow.