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Category:   Application (Generic)  >   HPE integrated Lights Out (iLO) Vendors:   HPE
HP integrated Lights Out Can Be Crashed By Remote Users
SecurityTracker Alert ID:  1010274
SecurityTracker URL:
CVE Reference:   CVE-2004-0525   (Links to External Site)
Updated:  Jun 8 2004
Original Entry Date:  May 25 2004
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.10 to prior to 1.55
Description:   A vulnerability was reported in HP integrated Lights Out (iLO). A remote user can cause denial of service conditions.

HP reported that a remote user can connect to iLO on a target ProLiant server using port zero to cause iLO to stop responding.

Impact:   A remote user can cause iLO to become unavailable.
Solution:   The vendor has released a fixed version (1.55), available at:

HP recommends that you do not use port zero, because it is specified as a reserved port by the Internet Engineering Task Force.

Vendor URL: (Links to External Site)
Cause:   Exception handling error, State error
Underlying OS:  Linux (Any), Windows (NT), Windows (2000), Windows (2003)
Underlying OS Comments:  HP ProLiant Servers

Message History:   None.

 Source Message Contents

Subject:  SSRT4724 - HP integrated Lights Out (iLO) Denial of Service (DoS)



SSRT4724 - HP integrated Lights Out (iLO) Denial of Service (DoS) using port zero


There are no restrictions for distribution of this Bulletin provided that it remains 
complete and intact.

The information in this Security bulletin should be acted upon as soon as possible.

24 May 2004


Denial of Service (DoS)

HP Software Security Response Team


LAN management products or other functions that use port zero when
accessing an Integrated Lights Out (iLO) in a ProLiant server will
cause iLO to become unresponsive creating a Denial of Service.
Port zero is specified as a reserved port by the Internet
Engineering Task Force (IETF) and should not be used.
SUPPORTED SOFTWARE VERSIONS*:  ONLY impacted versions are listed.
iLO Firmware V1.10 or Later up to, but not including, V1.55
This problem affects any LAN management product that uses port
zero when accessing iLO in a ProLiant server.  An updated
listing of ProLiant servers with iLO is available at the following URL:


    iLO Firmware
    action: install revision V1.55 or subsequent

Although HP recommends that port zero not be used (as it is specified
as a reserved port by the Internet Engineering Task Force), if it is
necessary to use port zero, upgrade the iLO firmware. iLO Firmware
Version 1.55 allows the use of port zero without causing iLO
to become unresponsive. iLO Firmware Version 1.55 is available
at the following URL:
Please write to to request a PGP signed version of this bulletin.

* The software product category that this Security Bulletin relates to is represented by 
the 5th and 6th characters of the Bulletin number: GN=General, MA=Management Agents, 
MI=Misc. 3rd party, MP=HP-MPE/iX, NS=HP NonStop Servers, OV=HP OpenVMS, PI=HP Printing & 
Imaging, ST=HP Storage, TU=HP Tru64 UNIX, TL=Trusted Linux, UX=HP-UX, VV=Virtual Vault

SUPPORT: For further information, contact HP Services support channel.

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REPORT: To report a potential security vulnerability with any HP supported product, send 
Email to: It is strongly recommended that security related 
information being communicated to HP be encrypted using PGP, especially exploit 
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System management and security procedures must be reviewed frequently to maintain system 
integrity. HP is continually reviewing and enhancing the security features of software 
products to provide customers with current secure solutions.

"HP is broadly distributing this Security Bulletin in order to bring to the attention of 
users of the affected HP products the important security information contained in this 
Bulletin. HP recommends that all users determine the applicability of this information to 
their individual situations and take appropriate action. HP does not warrant  that this 
information is necessarily accurate or complete for all user situations and, consequently, 
HP will not be responsible for any damages resulting from user's use or disregard of the 
information provided in this Bulletin. To the extent permitted by law, HP disclaims all 
warranties, either express or implied, including the warranties of merchantability and 
fitness for a particular purpose, title and non-infringement."

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document is subject to change without notice. Hewlett-Packard Company and the names of 
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