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amazonAmazonALAS-2020-1430
HistorySep 03, 2020 - 9:53 p.m.

Important: kernel

2020-09-0321:53:00
alas.aws.amazon.com
132

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

JSON

Issue Overview:

2024-05-23: CVE-2020-14356 was added to this advisory.

A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system. (CVE-2020-14356)

A flaw was found in the Linux kernel. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-14386)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-tools-devel-4.14.193-113.317.amzn1.i686  
    kernel-4.14.193-113.317.amzn1.i686  
    kernel-debuginfo-4.14.193-113.317.amzn1.i686  
    perf-debuginfo-4.14.193-113.317.amzn1.i686  
    perf-4.14.193-113.317.amzn1.i686  
    kernel-tools-4.14.193-113.317.amzn1.i686  
    kernel-tools-debuginfo-4.14.193-113.317.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.193-113.317.amzn1.i686  
    kernel-devel-4.14.193-113.317.amzn1.i686  
    kernel-headers-4.14.193-113.317.amzn1.i686  
  
src:  
    kernel-4.14.193-113.317.amzn1.src  
  
x86_64:  
    kernel-tools-4.14.193-113.317.amzn1.x86_64  
    kernel-debuginfo-4.14.193-113.317.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.193-113.317.amzn1.x86_64  
    kernel-4.14.193-113.317.amzn1.x86_64  
    kernel-headers-4.14.193-113.317.amzn1.x86_64  
    perf-4.14.193-113.317.amzn1.x86_64  
    kernel-tools-devel-4.14.193-113.317.amzn1.x86_64  
    perf-debuginfo-4.14.193-113.317.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.193-113.317.amzn1.x86_64  
    kernel-devel-4.14.193-113.317.amzn1.x86_64

Additional References

Red Hat: CVE-2020-14356, CVE-2020-14386

Mitre: CVE-2020-14356, CVE-2020-14386

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686kernel-tools-devel< 4.14.193-113.317.amzn1kernel-tools-devel-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel< 4.14.193-113.317.amzn1kernel-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo< 4.14.193-113.317.amzn1kernel-debuginfo-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686perf-debuginfo< 4.14.193-113.317.amzn1perf-debuginfo-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686perf< 4.14.193-113.317.amzn1perf-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-tools< 4.14.193-113.317.amzn1kernel-tools-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-debuginfo< 4.14.193-113.317.amzn1kernel-tools-debuginfo-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo-common-i686< 4.14.193-113.317.amzn1kernel-debuginfo-common-i686-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-devel< 4.14.193-113.317.amzn1kernel-devel-4.14.193-113.317.amzn1.i686.rpm
Amazon Linux1i686kernel-headers< 4.14.193-113.317.amzn1kernel-headers-4.14.193-113.317.amzn1.i686.rpm
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7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

JSON
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