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amazonAmazonALAS-2019-1318
HistoryNov 14, 2019 - 8:06 p.m.

Medium: microcode_ctl, kernel

2019-11-1420:06:00
alas.aws.amazon.com
79

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

22.4%

JSON

Issue Overview:

This security update is only applicable to EC2 Bare Metal instance types using Intel processors.

Intel has released microcode updates for certain Intel CPUs. After installing the updated microcode_ctl package, the microcode will be automatically activated on next boot.

Improper conditions check in the voltage modulation interface for some Intel Xeon Scalable Processors may allow a privileged user to potentially enable denial of service via local access.(CVE-2019-11139)

TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.(CVE-2019-11135)

Affected Packages:

microcode_ctl, kernel

Issue Correction:
Run yum update microcode_ctl to update your system.
Run yum update kernel and reboot to update your system.

New Packages:

i686:  
    microcode_ctl-debuginfo-2.1-47.36.amzn1.i686  
    microcode_ctl-2.1-47.36.amzn1.i686  
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.i686  
    kernel-debuginfo-4.14.152-98.182.amzn1.i686  
    perf-debuginfo-4.14.152-98.182.amzn1.i686  
    kernel-tools-4.14.152-98.182.amzn1.i686  
    kernel-devel-4.14.152-98.182.amzn1.i686  
    kernel-headers-4.14.152-98.182.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.152-98.182.amzn1.i686  
    perf-4.14.152-98.182.amzn1.i686  
    kernel-4.14.152-98.182.amzn1.i686  
    kernel-tools-devel-4.14.152-98.182.amzn1.i686  
  
src:  
    microcode_ctl-2.1-47.36.amzn1.src  
    kernel-4.14.152-98.182.amzn1.src  
  
x86_64:  
    microcode_ctl-debuginfo-2.1-47.36.amzn1.x86_64  
    microcode_ctl-2.1-47.36.amzn1.x86_64  
    perf-debuginfo-4.14.152-98.182.amzn1.x86_64  
    perf-4.14.152-98.182.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.x86_64  
    kernel-devel-4.14.152-98.182.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.152-98.182.amzn1.x86_64  
    kernel-tools-4.14.152-98.182.amzn1.x86_64  
    kernel-4.14.152-98.182.amzn1.x86_64  
    kernel-tools-devel-4.14.152-98.182.amzn1.x86_64  
    kernel-debuginfo-4.14.152-98.182.amzn1.x86_64  
    kernel-headers-4.14.152-98.182.amzn1.x86_64

Additional References

Red Hat: CVE-2019-11135, CVE-2019-11139

Mitre: CVE-2019-11135, CVE-2019-11139

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686microcode_ctl-debuginfo< 2.1-47.36.amzn1microcode_ctl-debuginfo-2.1-47.36.amzn1.i686.rpm
Amazon Linux1i686microcode_ctl< 2.1-47.36.amzn1microcode_ctl-2.1-47.36.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-debuginfo< 4.14.152-98.182.amzn1kernel-tools-debuginfo-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo< 4.14.152-98.182.amzn1kernel-debuginfo-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686perf-debuginfo< 4.14.152-98.182.amzn1perf-debuginfo-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686kernel-tools< 4.14.152-98.182.amzn1kernel-tools-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686kernel-devel< 4.14.152-98.182.amzn1kernel-devel-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686kernel-headers< 4.14.152-98.182.amzn1kernel-headers-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo-common-i686< 4.14.152-98.182.amzn1kernel-debuginfo-common-i686-4.14.152-98.182.amzn1.i686.rpm
Amazon Linux1i686perf< 4.14.152-98.182.amzn1perf-4.14.152-98.182.amzn1.i686.rpm
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6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

22.4%

JSON
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