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Check Privileges

In Jira, privileges can be checked by any user, authenticated or not, through the endpoints /rest/api/2/mypermissions or /rest/api/3/mypermissions. These endpoints reveal the user's current privileges. A notable concern arises when non-authenticated users hold privileges, indicating a security vulnerability that could potentially be eligible for a bounty. Similarly, unexpected privileges for authenticated users also highlight a vulnerability.

An important update was made on 1st February 2019, requiring the 'mypermissions' endpoint to include a 'permission' parameter. This requirement aims to enhance security by specifying the privileges being queried: check it here

  • ADD_COMMENTS

  • ADMINISTER

  • ADMINISTER_PROJECTS

  • ASSIGNABLE_USER

  • ASSIGN_ISSUES

  • BROWSE_PROJECTS

  • BULK_CHANGE

  • CLOSE_ISSUES

  • CREATE_ATTACHMENTS

  • CREATE_ISSUES

  • CREATE_PROJECT

  • CREATE_SHARED_OBJECTS

  • DELETE_ALL_ATTACHMENTS

  • DELETE_ALL_COMMENTS

  • DELETE_ALL_WORKLOGS

  • DELETE_ISSUES

  • DELETE_OWN_ATTACHMENTS

  • DELETE_OWN_COMMENTS

  • DELETE_OWN_WORKLOGS

  • EDIT_ALL_COMMENTS

  • EDIT_ALL_WORKLOGS

  • EDIT_ISSUES

  • EDIT_OWN_COMMENTS

  • EDIT_OWN_WORKLOGS

  • LINK_ISSUES

  • MANAGE_GROUP_FILTER_SUBSCRIPTIONS

  • MANAGE_SPRINTS_PERMISSION

  • MANAGE_WATCHERS

  • MODIFY_REPORTER

  • MOVE_ISSUES

  • RESOLVE_ISSUES

  • SCHEDULE_ISSUES

  • SET_ISSUE_SECURITY

  • SYSTEM_ADMIN

  • TRANSITION_ISSUES

  • USER_PICKER

  • VIEW_AGGREGATED_DATA

  • VIEW_DEV_TOOLS

  • VIEW_READONLY_WORKFLOW

  • VIEW_VOTERS_AND_WATCHERS

  • WORK_ON_ISSUES

Example: https://your-domain.atlassian.net/rest/api/2/mypermissions?permissions=BROWSE_PROJECTS,CREATE_ISSUES,ADMINISTER_PROJECTS

#Check non-authenticated privileges
curl https://jira.some.example.com/rest/api/2/mypermissions | jq | grep -iB6 '"havePermission": true'

Automated enumeration

Atlasian Plugins

As indicated in this blog, in the documentation about Plugin modules ↗ it's possible to check the different types of plugins, like:

This is an example of the macro plugin type:

package com.atlassian.tutorial.macro;

import com.atlassian.confluence.content.render.xhtml.ConversionContext;
import com.atlassian.confluence.macro.Macro;
import com.atlassian.confluence.macro.MacroExecutionException;

import java.util.Map;

public class helloworld implements Macro {

    public String execute(Map<String, String> map, String body, ConversionContext conversionContext) throws MacroExecutionException {
        if (map.get("Name") != null) {
            return ("<h1>Hello " + map.get("Name") + "!</h1>");
        } else {
            return "<h1>Hello World!<h1>";
        }
    }

    public BodyType getBodyType() { return BodyType.NONE; }

    public OutputType getOutputType() { return OutputType.BLOCK; }
}

It's possible to observe that these plugins might be vulnerable to common web vulnerabilities like XSS. For example the previous example is vulnerable because it's reflecting data given by the user.

Once a XSS is found, in this github repo you can find some payloads to increase the impact of the XSS.

Backdoor Plugin

This post describes different (malicious) actions that could perform a malicious Jira plugin. You can find code example in this repo.

These are some of the actions a malicious plugin could perform:

  • Hiding Plugins from Admins: It's possible to hide the malicious plugin injecting some front-end javascript

  • Exfiltrating Attachments and Pages: Allow to access and exfiltrate all the data.

  • Stealing Session Tokens: Add an endpoint that will echo the headers in the response (with the cookie) and some javascript that will contact it and leak the cookies.

  • Command Execution: Ofc it's possible to create a plugin that will execute code.

  • Reverse Shell: Or get a reverse shell.

  • DOM Proxying: If the confluence is inside a private network, it would be possible to establish a connection through the browser of some user with access to it and for example contact the server command executing through it.

If you are interested in hacking career and hack the unhackable - we are hiring! (fluent polish written and spoken required).

Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

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