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amazonAmazonALAS-2023-1783
HistoryJul 13, 2023 - 11:57 p.m.

Important: kernel

2023-07-1323:57:00
alas.aws.amazon.com
7

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

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

24.8%

Issue Overview:

A use-after-free flaw was found in the Netfilter subsystem of the Linux kernel when processing named and anonymous sets in batch requests, which can lead to performing arbitrary reads and writes in kernel memory. This flaw allows a local user with CAP_NET_ADMIN capability to crash or potentially escalate their privileges on the system. (CVE-2023-3117)

Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace (CVE-2023-35001)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-devel-4.14.320-168.534.amzn1.i686  
    kernel-headers-4.14.320-168.534.amzn1.i686  
    perf-4.14.320-168.534.amzn1.i686  
    kernel-4.14.320-168.534.amzn1.i686  
    kernel-tools-devel-4.14.320-168.534.amzn1.i686  
    perf-debuginfo-4.14.320-168.534.amzn1.i686  
    kernel-debuginfo-4.14.320-168.534.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.320-168.534.amzn1.i686  
    kernel-tools-4.14.320-168.534.amzn1.i686  
    kernel-tools-debuginfo-4.14.320-168.534.amzn1.i686  
  
src:  
    kernel-4.14.320-168.534.amzn1.src  
  
x86_64:  
    kernel-headers-4.14.320-168.534.amzn1.x86_64  
    kernel-tools-4.14.320-168.534.amzn1.x86_64  
    kernel-tools-devel-4.14.320-168.534.amzn1.x86_64  
    kernel-devel-4.14.320-168.534.amzn1.x86_64  
    kernel-4.14.320-168.534.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.320-168.534.amzn1.x86_64  
    kernel-debuginfo-4.14.320-168.534.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.320-168.534.amzn1.x86_64  
    perf-debuginfo-4.14.320-168.534.amzn1.x86_64  
    perf-4.14.320-168.534.amzn1.x86_64  

Additional References

Red Hat: CVE-2023-3117, CVE-2023-35001

Mitre: CVE-2023-3117, CVE-2023-35001

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

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

24.8%