Re: [Full-disclosure] Supermicro IPMI: backup function causes password to be stored at public web location
- From: Raymond Dijkxhoorn <raymond@xxxxxxxxxxxxxxx>
- Date: Wed, 12 Oct 2011 11:26:57 +0200 (CEST)
Supermicro X8SI6-F mainboard - IPMI firmware: 2.50
Supermicro X9SCL-F mainboard - IPMI firmware: 1.01
Likely affects other Supermicro boards of those generations that use the
same type of firmware.
Modern servers often include a feature called IPMI to remotely manage and
monitor the server.
Since setting up the IPMI card properly requires entering a dozen settings
ranging from network information, usernames and passwords,
to e-mail address that should be notified if a hardware failure occurs,
most IPMI cards offer a convenience function to backup and restore the
settings to a file.
In the case of these boards you can login to the IPMI webinterface and go
to "maintenance" -> "IPMI configuration" -> "save IPMI configuration" and a
configuration backup file is generated.
This file is then available for download at:
The problem is that this file is PUBLICLY accessible to everyone, even
those NOT logged into the webinterface.
Furtermore the file remains accessible until the server chassis loses
power, which is unlikely to be anytime soon if the server is already racked
up in a datacenter.
This isnt only the issue for the passwords. But also for the screen
images. Those IPMI controllers have a option to capture the actual server
screen. And this isnt password protected either.
We reported this ~ 3 years ago to them. And is available in about any
My advise, put those IPMI's on private networks only. Or firewall them.
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