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<p>inline update on impact & solutions for CI<br>
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<div class="moz-cite-prefix">On 3/18/2019 7:49 PM, Thomaiyar,
Richard Marian wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1f2c8cf9-27cf-b569-033b-9216a0a80fe8@linux.intel.com">
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</xml><![endif]--><!--[if gte mso 10]>
<style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
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font-family:"Calibri",sans-serif;
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mso-ascii-theme-font:minor-latin;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
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<![endif]--> </p>
<p class="MsoNormal">All, </p>
<p class="MsoNormal"> In OpenBMC, default password <i
style="mso-bidi-font-style: normal">“0penBmc” </i>is used for<i
style="mso-bidi-font-style:normal"> “root” </i>user. This is
getting applied for all recipes irrespective of companies
meta-xxx layer, as this is done through phosphor-defaults.inc
(under meta-phosphor distro). The only option is to override the
same using local.conf.sample (but if missed, default password
for root user will get applied). <span style="mso-spacerun:yes"> </span>Currently
this is not limited to DEBUG_BUILD but applied for all builds.
As root user is also exposed in phosphor-user-manager, it is
shown as valid user account in all the interfaces like IPMI /
REDFISH / WEBUI etc. From security point of it, following
recommendations are made.</p>
<p class="MsoNormal">1. Avoid having common default passwords
across products. (i.e. it’s ok to have unique password for each
device).</p>
<p class="MsoNormal">2. Force end-user to configure user name
& password.</p>
<p class="MsoNormal">This was also pointed out by Ed in our sync
meeting - <a
href="https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=201720180SB327"
moz-do-not-send="true">SB-327 Information Privacy – connected
Devices</a> </p>
<p><br>
</p>
<p class="MsoNormal">Having said that, planning to do following.
Please let me know your views / concerns / any other
recommendations</p>
<p class="MsoNormal">1. Remove default password “0penBmc” from
phosphor-defaults.inc. Any company which requires password for
root user can enable the same using local.conf.sample, in its
respective meta-xxx layer (Recommend to avoid using root user or
in worst-case keep it for DEBUG_BUILD only)</p>
</blockquote>
This may cause problem for people, who need the default password in
deployment system. (But it's better to find a different solution,
due to security concern. If this is what really required then it can
be overridden using local.conf.sample. At the same time, we can keep
root password enabled for non-release version.<br>
<blockquote type="cite"
cite="mid:1f2c8cf9-27cf-b569-033b-9216a0a80fe8@linux.intel.com">
<p class="MsoNormal">2. Can expose different user name:
openBmcUser password: 0penBmc through local.conf.sample in
DEBUG_BUILD / internal builds and make sure, that this doesn’t
gets applied for RELEASE version</p>
</blockquote>
<p>2.1 --> This provides option, so that CI infrastructure build
will use "<i>openBmcUser" </i>as the default user (if host
interface is not available for the CI system), using this
methodology CI system won't be broken.</p>
<p>2.2 --> In worst case, we can have root user for CI builds
alone, as using that we can login to SSH and create default user
using ipmitool -I dbus interface.<br>
</p>
<blockquote type="cite"
cite="mid:1f2c8cf9-27cf-b569-033b-9216a0a80fe8@linux.intel.com">
<p class="MsoNormal">3. Remove exposing user id 0 (root) in
phosphor-user-manager. i.e. root user (uid:0) doesn’t need to be
listed as user accounts in IPMI / REDFISH for all builds?
(Reason: 1. As part of SELinux. <span style="mso-spacerun:yes"> </span>2.
Few validation cases will not be covered which requires deleting
all user accounts etc.). Note: If any-one really require this,
then we can make it through configurable flag</p>
<p class="MsoNormal">4. Host interface (IPMI Commands) must be
used to create user accounts in BMC (i.e. From BIOS Setup page
user accounts for the BMC can be created). <br>
</p>
<p class="MsoNormal">5. For any systems which doesn’t have Host
interface - logic can be applied to create a new user based on
restrictions (say create user accounts based on certain stages –
provisioning / physical presence check / can create unique
password for each device etc.)</p>
<p class="MsoNormal"> <br>
</p>
<p class="MsoNormal">Regards, </p>
<p class="MsoNormal">Richard</p>
</blockquote>
</body>
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