Jira & Confluence

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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:

REST Plugin Module ↗: Expose RESTful API endpoints
Servlet Plugin Module ↗: Deploy Java servlets as part of a plugin
Macro Plugin Module ↗: Implement Confluence Macros, i.e. parameterised HTML templates

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.