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HPSBHF03666 rev.1 - HPE Integrated Lights-Out 4 (iLO 4) using OpenSSL, Remote Disclosure of Information


Document ID: c05323116

Version: 1

HPSBHF03666 rev.1 - HPE Integrated Lights-Out 4 (iLO 4) using OpenSSL, Remote Disclosure of Information
NOTICE: The information in this Security Bulletin should be acted upon as soon as possible.

Release Date: 2016-11-01

Last Updated: 2016-11-01

Potential Security Impact: Remote: Disclosure of Information

Source: Hewlett Packard Enterprise, HPE Product Security Response Team


A security vulnerability in the DES/3DES block ciphers used in the TLS protocol could potentially impact Integrated Lights-Out 4 (iLO 4) resulting in remote disclosure of information. This is also known as the SWEET32 attack.

References: CVE-2016-2183 - Sweet32 attack, PSRT110257

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

HPE Integrated Lights-Out 4 (iLO 4) - v2.50 and earlier


CVSS Version 3.0 and Version 2.0 Base Metrics
V3 Vector
V3 Base Score
V2 Vector
V2 Base Score
Information on CVSS is documented in HPE Customer Notice: HPSN-2008-002


HPE has provided the following resolution to mitigate this vulnerability in the impacted versions of iLO 4:

  • For iLO 4 firmware versions prior to v2.50, upgrade to iLO 4 firmware v2.50 and then select the configuration option provided in the next step.

    The update is available at the following location:

  • For iLO 4 firmware v2.50, select the following configuration option:

    Configure for "Enforce AES/3DES Encryption" or "FIPS" modes. This will disable 3DES-CBC ciphers for TLS connections.


Selecting the option 'Enforce AES/3DES Encryption' in iLO 4 v2.50 will enforce the use of an AES cipher. 3DES ciphers that were allowed in the previous firmware versions of iLO 4 are no longer supported. The name of this option will change in a future version of firmware to more accurately define the functionality.

Please contact HPE Technical Support if any assistance is needed for acquiring the firmware or configuration.

Version:1 (rev.1) - 1 November 2016 Initial release

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 policy.

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 product:

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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 = HP General Software
HF = HP Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software

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Document title: HPSBHF03666 rev.1 - HPE Integrated Lights-Out 4 (iLO 4) using OpenSSL, Remote Disclosure of Information
Document ID: emr_na-c05323116-1
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