The SpringShell vulnerability may affect some web applications using Spring Framework, but requires a number of conditions to be exploitable. One specific condition which may be rather rare (and therefore render most applications non-exploitable in practice) is the existence of Spring endpoints which bind request parameters to a non-primitive (Java Bean) type. This tool can be used to scan compiled code and verify whether such endpoints exist in the codebase.
Currently this alerts on all non-primitive arguments. As the precise list of vulnerable types becomes clearer, the tool will be updated.
The tool requires Python 3.
pip install -r requirements.txt
python scan_spring.py root-folder [-quiet] [-exclude folder1 folder2 ..]
or
python scan_spring.py root-archive [-quiet] [-exclude folder1 folder2 ..]
The tool will scan root_folder recursively for .jar and .war files; in each located archive the tool examines the .class files for methods annotated with RequestMapping, and reports the occurrence if the argument types of the method are not primitive.
With -quiet flag, error messages (files not found/ archives failed to open/ password protected archives) are muted.
Folders appearing after -exclude (optional) are skipped.