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<p class="MsoNormal"><span style="color:#002060">I tried to dig more and confirmed that ASPEED does not persists locks during SRST.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#002060"><o:p> </o:p></span></p>
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Existing FW solution is not viable. Is it possible for host to hide/disable IO ports that are used by SocFlash?
<o:p></o:p></li><li class="MsoListParagraph" style="color:#002060;margin-left:0in;mso-list:l0 level1 lfo1">
Are there any HW design considerations to prevent this exploit? <o:p></o:p></li></ol>
<p class="MsoNormal"><span style="color:#002060"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#002060">Neeraj<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#002060"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Khetan, Sharad <sharad.khetan@intel.com> <br>
<b>Sent:</b> Monday, August 26, 2019 7:38 AM<br>
<b>To:</b> Christian Svensson <bluecmd@google.com>; Neeraj Ladkani <neladk@microsoft.com><br>
<b>Cc:</b> James Mihm <james.mihm@gmail.com>; openbmc@lists.ozlabs.org; Zheng Bao <fishbaoz@hotmail.com><br>
<b>Subject:</b> RE: Socflash says the bmc is write protected.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yes the locks will persist across any Resets (BMC or Host), to mitigate the vulnerability.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">-Sharad<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a name="_____replyseparator"></a><b>From:</b> openbmc <<a href="mailto:openbmc-bounces+sharad.khetan=intel.com@lists.ozlabs.org">openbmc-bounces+sharad.khetan=intel.com@lists.ozlabs.org</a>>
<b>On Behalf Of </b>Christian Svensson<br>
<b>Sent:</b> Monday, August 26, 2019 1:44 AM<br>
<b>To:</b> Neeraj Ladkani <<a href="mailto:neladk@microsoft.com">neladk@microsoft.com</a>><br>
<b>Cc:</b> James Mihm <<a href="mailto:james.mihm@gmail.com">james.mihm@gmail.com</a>>;
<a href="mailto:openbmc@lists.ozlabs.org">openbmc@lists.ozlabs.org</a>; Zheng Bao <<a href="mailto:fishbaoz@hotmail.com">fishbaoz@hotmail.com</a>><br>
<b>Subject:</b> Re: Socflash says the bmc is write protected.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Which type of reset are you referring to?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">- Chris<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Aug 19, 2019 at 10:40 PM Neeraj Ladkani <<a href="mailto:neladk@microsoft.com">neladk@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#002060">Can anyone confirms if these locks persists during BMC reset?
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#002060">Neeraj</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#002060"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> openbmc <openbmc-bounces+neladk=<a href="mailto:microsoft.com@lists.ozlabs.org" target="_blank">microsoft.com@lists.ozlabs.org</a>>
<b>On Behalf Of </b>James Mihm<br>
<b>Sent:</b> Monday, August 19, 2019 7:26 AM<br>
<b>To:</b> Zheng Bao <<a href="mailto:fishbaoz@hotmail.com" target="_blank">fishbaoz@hotmail.com</a>><br>
<b>Cc:</b> <a href="mailto:openbmc@lists.ozlabs.org" target="_blank">openbmc@lists.ozlabs.org</a><br>
<b>Subject:</b> Re: Socflash says the bmc is write protected.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The P2A Bridge that is used by the socflash utility has been disabled; see
<a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fnvd.nist.gov%2Fvuln%2Fdetail%2FCVE-2019-6260&data=02%7C01%7Cneladk%40microsoft.com%7C86c67159b4ca4c860aa008d72a3302e0%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637024270920460918&sdata=WHVK9sr7auwRAoA9kG6giMi4MYVNlfnXHxsdQeKGb9s%3D&reserved=0" target="_blank">
https://nvd.nist.gov/vuln/detail/CVE-2019-6260</a> for details.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon, Aug 19, 2019 at 5:51 AM Zheng Bao <<a href="mailto:fishbaoz@hotmail.com" target="_blank">fishbaoz@hotmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Hi, All,</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">I use socflash to update the BMC firmware. The original BMC firmware can be updated, but openbmc can not be.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Socflash says the BMC is protected. Does anybody know why?</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Thanks.
</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Joe</span><o:p></o:p></p>
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