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Note: the current version of the following document is available here: https://h20564.www2.hp.com/portal/site/hpsc/public/kb/ docDisplay?docId=emr_na-c04197764
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c04197764 Version: 1
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
VULNERABILITY SUMMARY 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)
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 patches. 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 interfaces.
HISTORY 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.
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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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