IBM xSeries Firmware: Denial of Service -- Console/Physical

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1525
            Denial of service vulnerability affects IBM Unified
               Extensible Firmware Interface (CVE-2019-6155)
                                3 May 2019

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

Product:           IBM System X
                   IBM BladeCenter
Publisher:         IBM
Operating System:  Network Appliance
                   Linux variants
Impact/Access:     Denial of Service -- Console/Physical
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6155  

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10883170

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Denial of service vulnerability affects IBM Unified Extensible Firmware
Interface (CVE-2019-6155)

Product:             Other xSeries
Component:           UEFI
Reference #:         0883170

Security Bulletin

Summary

IBM has released the following Unified Extensible Firmware Interface (UEFI) fix
for System x and BladeCenter systems in response to the following denial of
service vulnerability.

Vulnerability Details

CVEID: CVE-2019-6155
DESCRIPTION: IBM System x and IBM BladeCenter systems are vulnerable to a
denial of service, caused by a flaw in the SMI Handler. By sending a
specially-crafted request, a local attacker could exploit this vulnerability to
cause a denial of service condition.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
159885 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Product                                             Affected Version

BladeCenter HS23E 8038/8039                         ahe1

System x3630 M4 7158                                bee1
System x3530 M4 7160

System x3650 M4 BD 5466                             yoe1

Remediation/Fixes

Firmware fix versions are available on Fix Central: http://www.ibm.com/support/
fixcentral/

Product                                             Fix Version

BladeCenter HS23E 8038/8039                         ahe164c-3.00
(ibm_fw_uefi_ahe164c-3.00_anyos_32-64)

System x3630 M4 7158                                bee168c-3.20
System x3530 M4 7160
(ibm_fw_uefi_bee168c-3.20_anyos_32-64)

System x3650 M4 BD 5466                             yoe130c-2.40
(ibm_fw_uefi_yoe130c-2.40_anyos_32-64)

Workarounds and Mitigations

None

Change History

01 May 2019: Initial version published

              Cross reference information
    Product     Component Platform   Version    Edition
System x Blades UEFI               All Versions

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