Security Bulletin: IBM has released Unified Extensible Firmware Interface (UEFI) fixes in response to Intel Microarchitectural Data Sampling (MDS) Side Channel vulnerabilities.

Summary

IBM has released the following Unified Extensible Firmware Interface (UEFI) fixes for System x, Flex and BladeCenter systems in response to Intel Microarchitectural Data Sampling (MDS) Side Channel vulnerabilities.

Vulnerability Details

CVEID: CVE-2019-11091 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling Uncacheable Memory (MDSUM) vulnerability that allows uncacheable memory on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 3.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160993&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N)

CVEID: CVE-2018-12130 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that fills buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160992&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2018-12127 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that fills buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160991&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

CVEID: CVE-2018-12126 DESCRIPTION: Intel Microprocessor could allow a local authenticated attacker to obtain sensitive information, caused by a Microarchitectural Data Sampling (MDS) vulnerability that stores buffers on some microprocessors utilizing speculative execution. An attacker could exploit this vulnerability using a side-channel attack to obtain data that is being processed in the CPU by other apps. Note: This is called the Zombieload attack.
CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160990&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

Affected Products and Versions

Product

|

Affected Version

—|—

BladeCenter HS23 7875/1929

|

tke1

BladeCenter HS23E 8038/8039

|

ahe1

Flex System x220 2585/7906

|

kse1

Flex System x222 7916

|

cce1

Flex System x240 7863/8737/8738/8956

|

b2e1

Flex System x280, x480, x880 7903

|

n2e1

Flex System x440 7917

|

cne1

System x iDataPlex dx360 M4 7912/7913

|

tde1

System x NeXtScale nx360 M4 5455

|

fhe1

System x3100 M4 2582
System x3250 M4 2583

|

jqe1

System x3100 M5 5457

|

j9e1

System x3250 M5 5458

|

jue1

System x3300 M4 7382

|

yae1

System x3500 M4 7383

|

y5e1

System x3550 M4 7914

|

d7e1

System x3630 M4 7158
System x3530 M4 7160

|

bee1

System x3650 M4 7915
System x3650 M4 HD 5460

|

vve1

System x3650 M4 BD 5466

|

yoe1

System x3750 M4 8718/8722/8733/8752

|

koe1

System x3850 x6 3837/3839
System x3950 x6 3839

|

a8e1

Remediation/Fixes

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

Product

|

Fixed Version

—|—

BladeCenter HS23 7875/1929
(ibm_fw_uefi_tke166c-2.70_anyos_32-64)

|

tke166c-2.70

BladeCenter HS23E 8038/8039
(ibm_fw_uefi_ahe166c-3.10_anyos_32-64)

|

ahe166c-3.10

Flex System x220 2585/7906
(ibm_fw_uefi_kse164c-2.50_anyos_32-64)

|

kse164c-2.50

Flex System x222 7916
(ibm_fw_uefi_cce166c-2.30_anyos_32-64)

|

cce166c-2.30

Flex System x240 7863/8737/8738/8956
(ibm_fw_uefi_b2e168c-2.50_anyos_32-64)

|

b2e168c-2.50

Flex System x280, x480, x880 7903
(ibm_fw_uefi_n2e134d-2.10_anyos_32-64)

|

n2e134d-2.10

Flex System x440 7917
(ibm_fw_uefi_cne168c-2.40_anyos_32-64)

|

cne168c-2.40

System x iDataPlex dx360 M4 7912/7913
(ibm_fw_uefi_tde162c-2.40_anyos_32-64)

|

tde162c-2.40

System x NeXtScale nx360 M4 5455
(ibm_fw_uefi_fhe126c-2.20_anyos_32-64)

|

fhe126c-2.20

System x3100 M4 2582
System x3250 M4 2583
(ibm_fw_uefi_jqe186b-2.10_anyos_32-64)

|

jqe186b-2.10

System x3100 M5 5457
(ibm_fw_uefi_j9e138d-2.00_anyos_32-64)

|

j9e138d-2.00

System x3250 M5 5458
(ibm_fw_uefi_jue138d-2.00_anyos_32-64)

|

jue138d-2.00

System x3300 M4 7382
(ibm_fw_uefi_yae162c-2.40_anyos_32-64)

|

yae162c-2.40

System x3500 M4 7383
(ibm_fw_uefi_y5e164c-2.90_anyos_32-64)

|

y5e164c-2.90

System x3550 M4 7914
(ibm_fw_uefi_d7e170c-3.00_anyos_32-64)

|

d7e170c-3.00

System x3630 M4 7158
System x3530 M4 7160
(ibm_fw_uefi_bee170c-3.30_anyos_32-64)

|

bee170c-3.30

System x3650 M4 7915
System x3650 M4 HD 5460
(ibm_fw_uefi_vve166c-3.00_anyos_32-64)

|

vve166c-3.00

System x3650 M4 BD 5466
(ibm_fw_uefi_yoe132c-2.50_anyos_32-64)

|

yoe132c-2.50

System x3750 M4 8718/8722/8733/8752
(ibm_fw_uefi_koe166d-2.50_anyos_32-64)

|

koe166d-2.50

System x3850 x6 3837/3839
System x3950 x6 3839
(ibm_fw_uefi_a8e132d-1.90_anyos_32-64)

|

a8e132d-1.90

Workarounds and Mitigations

None