Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-034)

high Nessus Plugin ID 164357

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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 5.4.209-116.363. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-034 advisory.

An out-of-bounds write flaw was found in the Linux kernel's framebuffer-based console driver functionality in the way a user triggers ioctl FBIOPUT_VSCREENINFO with malicious data. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2021-33655)

A bug in the IMA subsystem was discovered which would incorrectly allow kexec to be used when kernel lockdown was enabled (CVE-2022-21505)

A heap buffer overflow flaw was found in the Linux kernel's Netfilter subsystem in the way a user provides incorrect input of the NFT_DATA_VERDICT type. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-34918)

An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)

A memory corruption flaw was found in the Linux kernel's Netfilter subsystem in the way a local user uses the libnetfilter_queue when analyzing a corrupted network packet. This flaw allows a local user to crash the system or a remote user to crash the system when the libnetfilter_queue is used by a local user.
(CVE-2022-36946)

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

ext4: fix race condition between ext4_write and ext4_convert_inline_data (CVE-2022-49414)

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

mm/mempolicy: fix uninit-value in mpol_rebind_policy() (CVE-2022-49567)

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

tcp: Fix data-races around sysctl_tcp_slow_start_after_idle. (CVE-2022-49572)

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

udp: Fix a data-race around sysctl_udp_l3mdev_accept. (CVE-2022-49577)

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

ipv4: Fix a data-race around sysctl_fib_multipath_use_neigh. (CVE-2022-49580)

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

iavf: Fix handling of dummy receive descriptors (CVE-2022-49583)

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

igmp: Fix data-races around sysctl_igmp_qrv. (CVE-2022-49589)

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

igmp: Fix data-races around sysctl_igmp_llm_reports. (CVE-2022-49590)

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

tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. (CVE-2022-49594)

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

tcp: Fix a data-race around sysctl_tcp_probe_threshold. (CVE-2022-49595)

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

raw: Fix a data-race around sysctl_raw_l3mdev_accept. (CVE-2022-49631)

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

icmp: Fix data-races around sysctl. (CVE-2022-49638)

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

cgroup: Use separate src/dst nodes when preloading css_sets for migration (CVE-2022-49647)

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

usbnet: fix memory leak in error case (CVE-2022-49657)

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

mm/slub: add missing TID updates on slab deactivation (CVE-2022-49700)

A NULL pointer dereference issue was found in the SCTP network protocol in net/sctp/stream_sched.c in the Linux kernel. If stream_in allocation fails, stream_out is freed, which would be accessed further. This flaw allows a local user to crash the system or potentially cause a denial of service. (CVE-2023-2177)

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: 164357

File Name: al2_ALASKERNEL-5_4-2022-034.nasl

Version: 1.9

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 8/23/2022

Updated: 3/17/2025

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2022-34918

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, 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:bpftool-debuginfo, 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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/15/2022

Vulnerability Publication Date: 7/4/2022

Exploitable With

Core Impact

Metasploit (Netfilter nft_set_elem_init Heap Overflow Privilege Escalation)

Reference Information

CVE: CVE-2021-33655, CVE-2022-21505, CVE-2022-34918, CVE-2022-36879, CVE-2022-36946, CVE-2022-49414, CVE-2022-49567, CVE-2022-49572, CVE-2022-49577, CVE-2022-49580, CVE-2022-49583, CVE-2022-49589, CVE-2022-49590, CVE-2022-49594, CVE-2022-49595, CVE-2022-49631, CVE-2022-49638, CVE-2022-49647, CVE-2022-49657, CVE-2022-49700, CVE-2023-2177

Detections

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