add plugin cve-2021-24499

[hh-hunter]

Hey,

this PR for the Vuln Detector Plugin for CVE-2021-24499 (see Issue #70 )

In order to verify the vulnerability, I used two different docker environments, one for the vulnerable version and the other for the fixed version

The first step is to clone my vulnerability environment warehouse to the local

git clone https://github.com/hh-hunter/cve-2021-24499
cd cve-2021-24499

Vulnerable image:

docker-compose -f docker-compose-vulnerability.yml up

Safe image:

docker-compose -f docker-compose-no-vulnerabilities.yaml up

The exposed web service port is 8000.

[lokiuox]

Hi @hh-hunter, thank you for your contribution! Please submit a PR following the contribution guidelines in the security-testbeds repo