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amazonAmazonALAS-2019-1253
HistoryAug 05, 2019 - 5:40 p.m.

Medium: kernel

2019-08-0517:40:00
alas.aws.amazon.com
73

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

Access Complexity

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

35.1%

Issue Overview:

There is a newly discovered variant side-channel attack of Spectre V1 which leverages SWAPGS instructions to bypass KPTI/KVA mitigations. This could lead to a kernel information disclosure

Affected Packages:

kernel

Issue Correction:
Run yum update kernel to update your system.

New Packages:

i686:  
    kernel-headers-4.14.133-88.112.amzn1.i686  
    kernel-tools-debuginfo-4.14.133-88.112.amzn1.i686  
    kernel-tools-devel-4.14.133-88.112.amzn1.i686  
    kernel-debuginfo-4.14.133-88.112.amzn1.i686  
    perf-4.14.133-88.112.amzn1.i686  
    perf-debuginfo-4.14.133-88.112.amzn1.i686  
    kernel-4.14.133-88.112.amzn1.i686  
    kernel-devel-4.14.133-88.112.amzn1.i686  
    kernel-tools-4.14.133-88.112.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.133-88.112.amzn1.i686  
  
src:  
    kernel-4.14.133-88.112.amzn1.src  
  
x86_64:  
    kernel-debuginfo-4.14.133-88.112.amzn1.x86_64  
    kernel-devel-4.14.133-88.112.amzn1.x86_64  
    kernel-4.14.133-88.112.amzn1.x86_64  
    perf-4.14.133-88.112.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.133-88.112.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.133-88.112.amzn1.x86_64  
    kernel-tools-4.14.133-88.112.amzn1.x86_64  
    kernel-tools-devel-4.14.133-88.112.amzn1.x86_64  
    kernel-headers-4.14.133-88.112.amzn1.x86_64  
    perf-debuginfo-4.14.133-88.112.amzn1.x86_64  

Additional References

Red Hat: CVE-2019-1125

Mitre: CVE-2019-1125

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

Access Complexity

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

35.1%