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amazonAmazonALAS-2023-1776
HistoryJun 27, 2023 - 11:45 p.m.

Important: kernel

2023-06-2723:45:00
alas.aws.amazon.com
15

5.7 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.7 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.2%

Issue Overview:

An issue was found in the Linux kernel’s IPv6 TCP connection tracking code, which could lead to high CPU usage with certain traffic patterns. (CVE-2023-1206)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-debuginfo-common-i686-4.14.318-167.530.amzn1.i686  
    kernel-tools-debuginfo-4.14.318-167.530.amzn1.i686  
    kernel-4.14.318-167.530.amzn1.i686  
    perf-4.14.318-167.530.amzn1.i686  
    kernel-devel-4.14.318-167.530.amzn1.i686  
    kernel-tools-devel-4.14.318-167.530.amzn1.i686  
    kernel-tools-4.14.318-167.530.amzn1.i686  
    kernel-headers-4.14.318-167.530.amzn1.i686  
    kernel-debuginfo-4.14.318-167.530.amzn1.i686  
    perf-debuginfo-4.14.318-167.530.amzn1.i686  
  
src:  
    kernel-4.14.318-167.530.amzn1.src  
  
x86_64:  
    kernel-tools-debuginfo-4.14.318-167.530.amzn1.x86_64  
    kernel-tools-4.14.318-167.530.amzn1.x86_64  
    perf-4.14.318-167.530.amzn1.x86_64  
    kernel-4.14.318-167.530.amzn1.x86_64  
    kernel-debuginfo-4.14.318-167.530.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.318-167.530.amzn1.x86_64  
    perf-debuginfo-4.14.318-167.530.amzn1.x86_64  
    kernel-headers-4.14.318-167.530.amzn1.x86_64  
    kernel-devel-4.14.318-167.530.amzn1.x86_64  
    kernel-tools-devel-4.14.318-167.530.amzn1.x86_64  

Additional References

Red Hat: CVE-2023-1206

Mitre: CVE-2023-1206

5.7 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.7 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.2%