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Date: 7 Feb 2018 20:20:42 +0000
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Subject: [security bulletin] HPSBHF02981 rev.2 - HPE Integrated Lights-Out
 2, 3, 4 (iLO2, iLO3, iLO4) and HPE Superdome Flex RMC -  IPMI 2.0 RCMP+
 Authentication Remote Password Hash Vulnerability (RAKP)

Hash: SHA256

Note: the current version of the following document is available here:


Document ID: c04197764
Version: 2

HPSBHF02981 rev.2 - HPE Integrated Lights-Out 2, 3, 4 (iLO2, iLO3, iLO4) and
HPE Superdome Flex RMC -  IPMI 2.0 RCMP+ Authentication Remote Password Hash
Vulnerability (RAKP)

NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.

Release Date: 2018-02-08
Last Updated: 2018-02-07

Potential Security Impact: Remote: Disclosure of Information

Source: Hewlett Packard Enterprise, Product Security Response Team

A potential security vulnerability has been identified in HPE Integrated
Lights-Out 2, 3, 4 (iLO2, iLO3, iLO4) and HPE Superdome Flex RMC. The
vulnerability could be exploited to allow an attacker to gain unauthorized
privileges and unauthorized access to privileged information.

  - This vulnerability also impacts the RMC of the "Superdome Flex" Server.


  - CVE-2013-4786

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

  - HPE Superdome Flex Server 1.0
  - HPE Integrated Lights-Out 4 (iLO 4) Firmware for ProLiant Gen8 Servers -
All, when IPMI is enabled
  - HPE Integrated Lights-Out 3 (iLO 3) Firmware for ProLiant G7 Servers -
All, when IPMI is enabled
  - HPE Integrated Lights-Out 2 (iLO 2) Firmware for ProLiant G6 Servers -
All, when IPMI is enabled


  CVSS Base Metrics
  Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector

      8.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
      8.5 (AV:N/AC:M/Au:S/C:C/I:C/A:C)

    Information on CVSS is documented in
    HPE Customer Notice HPSN-2008-002 here:


There is no resolution to this issue. The authentication process for the IPMI
2.0 specification mandates that the server send a salted SHA1 or MD5 hash of
the requested user's password to the client, prior to the client
authenticating. The BMC returns the password hash for any valid user account
requested. This password hash can be broken using an offline brute force or
dictionary attack. Because this functionality is a key part of the IPMI 2.0
specification, there is no way to fix the problem without deviating from the
IPMI 2.0 specification. HP recommends the following actions to mitigate the
risk this introduces:

1.  If you do not need to use IPMI, disable it. You can disable IPMI on
iLO2/3/4 using the Disable IPMI over LAN command.
2.  Maintain the latest iLO firmware that contains the most recent security
3.  Employ best practices in the management of the protocols and passwords on
your systems and networks. Use strong passwords wherever possible.
4.  If you must use IPMI, use a separate management LAN or VLAN, Access
Control Lists (ACLs), or VPN to limit and restrict access to your iLO
management interfaces.

For Superdome Flex's RMC: 

 * Refer to the below link for the details:  


Version:1 (rev.1) - 1 April 2014 Initial release

Version:2 (rev.2) - 7 February 2018 Include RMC of HPE Superdome Flex as an
affected product

Third Party Security Patches: Third party security patches that are to be
installed on systems running Hewlett Packard Enterprise (HPE) software
products should be applied in accordance with the customer's patch management

Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HPE Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to

Report: To report a potential security vulnerability for any HPE supported
  Web form:

Subscribe: To initiate a subscription to receive future HPE Security Bulletin
alerts via Email:

Security Bulletin Archive: A list of recently released Security Bulletins is
available here:

Software Product Category: The Software Product Category is represented in
the title by the two characters following HPSB.

3C = 3COM
3P = 3rd Party Software
GN = HPE General Software
HF = HPE Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software

Copyright 2016 Hewlett Packard Enterprise

Hewlett Packard Enterprise shall not be liable for technical or editorial
errors or omissions contained herein. The information provided is provided
"as is" without warranty of any kind. To the extent permitted by law, neither
HP or its affiliates, subcontractors or suppliers will be liable for
incidental,special or consequential damages including downtime cost; lost
profits; damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration. The
information in this document is subject to change without notice. Hewlett
Packard Enterprise and the names of Hewlett Packard Enterprise products
referenced herein are trademarks of Hewlett Packard Enterprise in the United
States and other countries. Other product and company names mentioned herein
may be trademarks of their respective owners.
Version: GnuPG v1


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