CVE-2021-21425

Summary

Grav Admin Plugin is an HTML user interface that provides a way to configure Grav and create and modify pages. In versions 1.10.7 and earlier, an unauthenticated user can execute some methods of administrator controller without needing any credentials. Particular method execution will result in arbitrary YAML file creation or content change of existing YAML files on the system. Successfully exploitation of that vulnerability results in configuration changes, such as general site information change, custom scheduler job definition, etc. Due to the nature of the vulnerability, an adversary can change some part of the webpage, or hijack an administrator account, or execute operating system command under the context of the web-server user. This vulnerability is fixed in version 1.10.8. Blocking access to the `/admin` path from untrusted sources can be applied as a workaround.

• CVE-2021-21425Exploit

  Python exploit for CVE-2021-21425 that executes a reverse shell payload against a target IP, with instructions for setting up a netcat listener.

• cve-2021-21425Exploit

  working exploit for the old cve-2021-21425 grav cms 1.7.10 vuln

• CVE-2021-21425Exploit

  GravCMS Unauthenticated Arbitrary YAML Write/Update leads to Code Execution (CVE-2021-21425)

• CVE-2021-21425Exploit

  CVE-2021-21425 - GravCMS 1.10.7 Unauthenticated RCE via Scheduler. Improved exploit with CLI args and auto base64 encoding.

• GravCMS_Nmap_ScriptExploit

  It is a nmap script for GravCMS vulnerability (CVE-2021-21425)

• CVE-2021-21425-RCEExploit

  Python exploit script for CVE-2021-21425 targeting Grav CMS admin panel, delivering a reverse shell via HTTP POST request with configurable LHOST and LPORT.

• GravCMS 1.10.7 - Unauthenticated Arbitrary File Write (Metasploit)Exploit

  Mehmet Ince · php · Apr 21, 2021