Amazon Linux 2 : kernel (ALAS-2024-2391)

high Nessus Plugin ID 187832

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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 4.14.334-252.552. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2024-2391 advisory.

2024-11-08: CVE-2023-52819 was added to this advisory.

2024-11-08: CVE-2023-52818 was added to this advisory.

2024-07-03: CVE-2023-52813 was added to this advisory.

2024-06-06: CVE-2023-52881 was added to this advisory.

2024-02-01: CVE-2023-0590 was added to this advisory.

2024-02-01: CVE-2024-0584 was added to this advisory.

2024-01-19: CVE-2023-52340 was added to this advisory.

A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race problem. This flaw leads to a denial of service issue. (CVE-2023-0590)

A race condition leading to a use-after-free issue was found in the QXL driver in the Linux kernel.
(CVE-2023-39198)

When a router encounters an IPv6 packet too big to transmit to the next-hop, it returns an ICMP6 Packet Too Big (PTB) message to the sender. The sender caches this updated Maximum Transmission Unit (MTU) so it knows not to exceed this value when subsequently routing to the same host.

In Linux kernels prior to 6.3, garbage collection is run on the IPv6 Destination Route Cache if the number of entries exceeds a threshold when adding the destination to the cache. This garbage collection examines every entry in the cache while holding a lock. In these affected kernel versions, a flood of the IPv6 ICMP6 PTB messages could cause high lock contention and increased CPU usage, leading to a Denial-of- Service.

The fix backports the garbage collection improvements from Linux kernel 6.3 by bringing the IPv6 code closer to the IPv4 code, which does not have this issue.

Patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=af6d10345ca76670c1b7c3 7799f0d5576ccef277 (CVE-2023-52340)

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

crypto: pcrypt - Fix hungtask for PADATA_RESET (CVE-2023-52813)

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

drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7 (CVE-2023-52818)

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

drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga (CVE-2023-52819)

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

tcp: do not accept ACK of bytes we never sent (CVE-2023-52881)

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.

A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.

We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1. (CVE-2023-6932)

A use-after-free issue was found in igmp_start_timer in net/ipv4/igmp.c in the network sub-component in the Linux Kernel. This flaw allows a local user to observe a refcnt use-after-free issue when receiving an igmp query packet, leading to a kernel information leak. (CVE-2024-0584)

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

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

Solution

Run 'yum update kernel' to update your system.

Plugin Details

Severity: High

ID: 187832

File Name: al2_ALAS-2024-2391.nasl

Version: 1.6

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 1/9/2024

Updated: 11/11/2024

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

Temporal Score: 4.4

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

CVSS Score Source: CVE-2023-6932

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, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:kernel-livepatch-4.14.334-252.552, 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: 1/3/2024

Vulnerability Publication Date: 11/9/2023

Reference Information

CVE: CVE-2023-0590, CVE-2023-39198, CVE-2023-52340, CVE-2023-52813, CVE-2023-52818, CVE-2023-52819, CVE-2023-52881, CVE-2023-6932, CVE-2024-0584

Detections

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