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[security bulletin] HPSBHF02981 rev.1 - HP Integrated Lights-Out 2, 3, and 4 (iLO2, iLO3, iLO4), IPMI 2.0 RCMP+ Authentication Remote Password Hash Vulnerability (RAKP)
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c04197764
HPSBHF02981 rev.1 - HP Integrated Lights-Out 2, 3, and 4 (iLO2, iLO3, iLO4),
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: 2014-03-13
Last Updated: 2014-04-03
Potential Security Impact: Disclosure of information, elevation of
privileges, privileged access.
Source: Hewlett-Packard Company, HP Software Security Response Team
A potential security vulnerability has been identified in HP Integrated
Lights-Out 2, 3, and 4 (iLO2, iLO3, iLO4). The vulnerability could be
exploited to allow an attacker to gain unauthorized privileges and
unauthorized access to privileged information.
References: CVE-2013-4786 (SSRT101367)
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP Integrated Lights-Out 2, 3, and 4 (iLO2, iLO3, iLO4)
CVSS 2.0 Base Metrics
Reference Base Vector Base Score
CVE-2013-4786 (AV:N/AC:M/Au:S/C:C/I:C/A:C) 8.5
Information on CVSS is documented
in HP Customer Notice: HPSN-2008-002
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:
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.
Maintain the latest iLO firmware that contains the most recent security
Employ best practices in the management of the protocols and passwords on
your systems and networks. Use strong passwords wherever possible.
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
Version:1 (rev.1) - 1 April 2014 Initial release
Third Party Security Patches: Third party security patches that are to be
installed on systems running HP software products should be applied in
accordance with the customer's patch management policy.
Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HP Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to security-alert@xxxxxx.
Report: To report a potential security vulnerability with any HP supported
product, send Email to: security-alert@xxxxxx
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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 = HP General Software
HF = HP Hardware and Firmware
MP = MPE/iX
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX
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