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.
The crash is fixed in version 0.4.3. Affected users are advised to update to this version.
None.
If you have any questions or comments about this advisory: * Open an issue in rulex * Email me at ludwig.stecher@gmx.de
Credit for finding these bugs goes to