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Amazon Linux 2 : kernel (ALAS-2024-2542)

high Nessus Plugin ID 197107

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of kernel installed on the remote host is prior to 4.14.343-261.564. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2542 advisory.

 In the Linux kernel, the following vulnerability has been resolved:

 netfilter: nftables: exthdr: fix 4-byte stack OOB write

 If priv->len is a multiple of 4, then dst[len / 4] can write pastthe destination array which leads to stack corruption.

 This construct is necessary to clean the remainder of the registerin case ->len is NOT a multiple of the register size, so make itconditional just like nft_payload.c does.

 The bug was added in 4.1 cycle and then copied/inherited whentcp/sctp and ip option support was added.

 Bug reported by Zero Day Initiative project (ZDI-CAN-21950,ZDI-CAN-21951, ZDI-CAN-21961). (CVE-2023-52628)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update kernel' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2024-2542.html

https://alas.aws.amazon.com/cve/html/CVE-2023-52628.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 197107

File Name: al2_ALAS-2024-2542.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/15/2024

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-52628

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-perf-debuginfo, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-livepatch-4.14.343-261.564, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python-perf

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 5/9/2024

Vulnerability Publication Date: 9/27/2023

Reference Information

CVE: CVE-2023-52628