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Security Bulletin: IBM has released Unified Extensible Firmware Interface (UEFI) fixes in response to Spectre variants 4 and 3a (CVE-2018-3639 CVE-2018-3640)

Security Bulletin


Summary

IBM has released the following Unified Extensible Firmware Interface (UEFI) fixes for System x, Flex and BladeCenter systems in response to the vulnerabilities referred to as Spectre variants 4 and 3a.

Vulnerability Details

CVEID: CVE-2018-3639
DESCRIPTION: Multiple Intel CPU''s could allow a local attacker to obtain sensitive information, caused by utilizing sequences of speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known. By conducting targeted cache side-channel attacks, an attacker could exploit this vulnerability to bypass security restrictions and gain read access to privileged memory. Note: This vulnerability is the Speculative Store Bypass (SSB), also known as Variant 4 or "SpectreNG".
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/143569 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

CVEID: CVE-2018-3640
DESCRIPTION: Multiple Intel CPU''s could allow a local attacker to obtain sensitive information, caused by utilizing sequences of speculative execution that perform speculative reads of system registers. By conducting targeted cache side-channel attacks, an attacker could exploit this vulnerability to determine the values stored in system registers. Note: This vulnerability is the Rogue System Register Read (RSRE), also known as Variant 3a.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/143570 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

Affected Products and Versions

 

Product

Affected Version

BladeCenter HS22 1911/1936/7809/7870
BladeCenter HS22V 1949/7871

p9e1

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 M2
System x iDataPlex dx360 M3

tme1

System x iDataPlex dx360 M4 7912/7913

tde1

System x NeXtScale nx360 M4 5455

fhe1

System x3200 M3 7327/7328
System x3250 M3 4251/4252/4261

gye1

System x3400 M2 7836/7837
System x3400 M3 7378/7379
System x3500 M2 7839
System x3500 M3 7380

y4e1

System x3550 M2 4198/7946
System x3550 M3 4254/7944
System x3650 M2 4199/7947
System x3650 M3 4255/7945

d6e1

System x3620 M3 7376
System x3630 M3 7377

hse1

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

BladeCenter HX5 7872/1909/1910/7873

hie1

System x3850 x5 7145/7146
System x3950 x5 7143/7191

g0e1

System x3690 x5 7147/7148/7149/7192

mle1

 

 

 

Remediation/Fixes

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

UEFI fix versions listed below also include the remediation for L1 Terminal Fault CVEs CVE-2018-3615, CVE-2018-3620 and CVE-2018-3646. 

 

Product

Fix Version

BladeCenter HS22 1911/1936/7809/7870
BladeCenter HS22V 1949/7871
(ibm_fw_uefi_p9e165b-1.29_linux_32-64
ibm_fw_uefi_p9e165b-1.29_windows_32-64)

p9e165b-1.29

BladeCenter HS23 7875/1929
(ibm_fw_uefi_tke160c-2.40_anyos_32-64)

tke160c-2.40

BladeCenter HS23E 8038/8039
(ibm_fw_uefi_ahe160c-2.80_anyos_32-64)

ahe160c-2.80

Flex System x220 2585/7906
(ibm_fw_uefi_kse158c-2.20_anyos_32-64)

kse158c-2.20

Flex System x222 7916
(ibm_fw_uefi_cce160c-2.00_anyos_32-64)

cce160c-2.00

Flex System x240 7863/8737/8738/8956
(ibm_fw_uefi_b2e162c-2.20_anyos_32-64)

b2e162c-2.20

Flex System x280, x480, x880 7903
(ibm_fw_uefi_n2e130e-1.90_anyos_32-64)

n2e130e-1.90

Flex System x440 7917
(ibm_fw_uefi_cne162d-2.10_anyos_32-64)

cne162d-2.10

System x iDataPlex dx360 M2
System x iDataPlex dx360 M3
(ibm_fw_uefi_tme163a-1.43_linux_32-64
 ibm_fw_uefi_tme163a-1.43_windows_32-64)

tme163a-1.43

System x iDataPlex dx360 M4 7912/7913
(ibm_fw_uefi_tde156c-2.10_anyos_32-64)

tde156c-2.10

System x NeXtScale nx360 M4 5455
(ibm_fw_uefi_fhe120d-1.90_anyos_32-64)

fhe120d-1.90

System x3200 M3 7327/7328
System x3250 M3 4251/4252/4261
(ibm_fw_uefi_gye165a-1.30_linux_32-64
 ibm_fw_uefi_gye165a-1.30_windows_32-64)

gye165a-1.30

System x3400 M2 7836/7837
System x3400 M3 7378/7379
System x3500 M2 7839
System x3500 M3 7380
(ibm_fw_uefi_y4e161a-1.17_linux_32-64
 ibm_fw_uefi_y4e161a-1.17_windows_32-64)

y4e161a-1.17

System x3550 M2 4198/7946
System x3550 M3 4254/7944
System x3650 M2 4199/7947
System x3650 M3 4255/7945
(ibm_fw_uefi_d6e164a-1.22_linux_32-64
 ibm_fw_uefi_d6e164a-1.22_windows_32-64)

d6e164a-1.22

System x3620 M3 7376
System x3630 M3 7377
(ibm_fw_uefi_hse127a-1.16_linux_32-64
 ibm_fw_uefi_hse127a-1.16_windows_32-64)

hse127a-1.16

System x3100 M4 2582
System x3250 M4 2583
(ibm_fw_uefi_jqe184c-1.90_anyos_32-64)

jqe184cs-1.90

System x3100 M5 5457
(ibm_fw_uefi_j9e134c-1.80_anyos_32-64)

j9e134c-1.80

System x3250 M5 5458
(ibm_fw_uefi_jue134c-1.80_anyos_32-64)

jue134c-1.80

System x3300 M4 7382
(ibm_fw_uefi_yae156c-2.10_anyos_32-64)
 

yae156C - 2.10

System x3500 M4 7383
(ibm_fw_uefi_y5e158c-2.60_anyos_32-64)

y5e158c-2.60

System x3550 M4 7914
(ibm_fw_uefi_d7e164c-2.70_anyos_32-64)

d7e164c-2.70

System x3630 M4 7158
System x3530 M4 7160
(ibm_fw_uefi_bee164c-3.00_anyos_32-64)

bee164c-3.00

System x3650 M4 7915
System x3650 M4 HD 5460
(ibm_fw_uefi_vve160c-2.70_anyos_32-64)

vve160c-2.70

System x3650 M4 BD 5466
(ibm_fw_uefi_yoe126c-2.20_anyos_32-64)

yoe126c-2.20

System x3750 M4 8718/8722/8733/8752
(ibm_fw_uefi_koe160c-2.20_anyos_32-64)

koe160c-2.20

System x3850 x6 3837/3839
System x3950 x6 3839
(ibm_fw_uefi_a8e128c-1.70_anyos_32-64)

a8e128c-1.70

BladeCenter HX5 7872/1909/1910/7873
(ibm_fw_uefi_hie188b-1.88_linux_32-64.tml
 ibm_fw_uefi_hie188b-1.88_windows_32-64)

hie188b-1.88

System x3850 x5 7145/7146
System x3950 x5 7143/7191
(ibm_fw_uefi_g0e188b-1.88_linux_32-64
 ibm_fw_uefi_g0e188b-1.88_windows_32-64)

g0e188b-1.88
 

System x3690 x5 7147/7148/7149/7192
(ibm_fw_uefi_mle188b-1.88_linux_32-64  ibm_fw_uefi_mle188b-1.88_windows_32-64)

mle188b-1.88

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Lenovo Product Security Advisories

Speculative Execution Side Channel Variants 4 and 3a

L1 Terminal Fault Side Channel Vulnerabilities

Potential CPU security issue with IBM System x, Flex and BladeCenter Systems

Change History

15 August 2018: Updated to reflect that these UEFI fix versions also contain remediation for L1TF.
11 July 2018: Original version published

*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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

12137/115813

 

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Document Information

Modified date:
15 August 2018

UID

ibm10716309

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