ESB-2019.0835 - [Appliance] Power 9 Systems: Denial of service - Remote/unauthenticated 2019-03-14

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0835
         IBM Security Bulletin: This Power System update is being
                     released to address CVE-2018-0732
                               14 March 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Power 9 Systems
Publisher:         IBM
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0732  

Reference:         ASB-2019.0060
                   ASB-2019.0019
                   ESB-2018.1870
                   ESB-2018.1758

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10875264

- --------------------------BEGIN INCLUDED TEXT--------------------

This Power System update is being released to address CVE-2018-0732

Product:             Power 9 Systems

Software version:    FW920

Operating system(s): Firmware

Reference #:         0875264

Security Bulletin

Summary

POWER9: In response to a denial of service vulnerability on the OpenSSL, a new
Power Systems firmware update is being released to address Common
Vulnerabilities and Exposures issue number CVE-2018-0732.
A malicious server can send a large prime value to a client during DH(E) TLS
handshake causing the client to hang. This can disrupt the HMC communications
for system management and partition operations.

Vulnerability Details

CVEID: CVE-2018-0732
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the
sending of a very large prime value to the client by a malicious server during
key agreement in a TLS handshake. By spending an unreasonably long period of
time generating a key for this prime, a remote attacker could exploit this
vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
144658 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Firmware release FW920 is affected.

Remediation/Fixes

Customers with the products below, install FW920.30
1) IBM Power Systems E950(9040-MR9)
2) IBM Power Systems E980(9080-M9S)

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF
ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=h/TV
-----END PGP SIGNATURE-----

« Back to bulletins