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amazonAmazonALAS-2023-1750
HistoryMay 25, 2023 - 5:41 p.m.

Important: kernel

2023-05-2517:41:00
alas.aws.amazon.com
21
netfilter nf_tables
arbitrary read write
kernel memory
root privileges
anonymous sets
yum update kernel
red hat
mitre
cve-2023-32233
unix

CVSS3

7.8

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

EPSS

0

Percentile

5.1%

JSON

Issue Overview:

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled. (CVE-2023-32233)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-tools-4.14.314-164.539.amzn1.i686  
    perf-debuginfo-4.14.314-164.539.amzn1.i686  
    kernel-devel-4.14.314-164.539.amzn1.i686  
    kernel-headers-4.14.314-164.539.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.314-164.539.amzn1.i686  
    kernel-debuginfo-4.14.314-164.539.amzn1.i686  
    kernel-tools-devel-4.14.314-164.539.amzn1.i686  
    kernel-4.14.314-164.539.amzn1.i686  
    kernel-tools-debuginfo-4.14.314-164.539.amzn1.i686  
    perf-4.14.314-164.539.amzn1.i686  
  
src:  
    kernel-4.14.314-164.539.amzn1.src  
  
x86_64:  
    kernel-4.14.314-164.539.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.314-164.539.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.314-164.539.amzn1.x86_64  
    perf-debuginfo-4.14.314-164.539.amzn1.x86_64  
    kernel-headers-4.14.314-164.539.amzn1.x86_64  
    kernel-tools-4.14.314-164.539.amzn1.x86_64  
    kernel-tools-devel-4.14.314-164.539.amzn1.x86_64  
    kernel-devel-4.14.314-164.539.amzn1.x86_64  
    kernel-debuginfo-4.14.314-164.539.amzn1.x86_64  
    perf-4.14.314-164.539.amzn1.x86_64

Additional References

Red Hat: CVE-2023-32233

Mitre: CVE-2023-32233

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686kernel-tools< 4.14.314-164.539.amzn1kernel-tools-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686perf-debuginfo< 4.14.314-164.539.amzn1perf-debuginfo-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-devel< 4.14.314-164.539.amzn1kernel-devel-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-headers< 4.14.314-164.539.amzn1kernel-headers-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo-common-i686< 4.14.314-164.539.amzn1kernel-debuginfo-common-i686-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-debuginfo< 4.14.314-164.539.amzn1kernel-debuginfo-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-devel< 4.14.314-164.539.amzn1kernel-tools-devel-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel< 4.14.314-164.539.amzn1kernel-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686kernel-tools-debuginfo< 4.14.314-164.539.amzn1kernel-tools-debuginfo-4.14.314-164.539.amzn1.i686.rpm
Amazon Linux1i686perf< 4.14.314-164.539.amzn1perf-4.14.314-164.539.amzn1.i686.rpm
Rows per page:
1-10 of 201

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CVSS3

7.8

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

EPSS

0

Percentile

5.1%

JSON
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