Amazon Linux 2 : kernel (ALAS-2022-1813)

high Nessus Plugin ID 163232

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 4.14.285-215.501. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1813 advisory.

- A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

- net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)

- The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. (CVE-2022-32296)

- An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point registers. (CVE-2022-32981)

- An information leak flaw was found in NFS over RDMA in the net/sunrpc/xprtrdma/rpc_rdma.c function in RPCRDMA_HDRLEN_MIN (7) (in rpcrdma_max_call_header_size, rpcrdma_max_reply_header_size). This flaw allows an attacker with normal user privileges to leak kernel information. (CVE-2022-0812)

- kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)

- A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494) (CVE-2022-1184)

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.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2022-1813.html

https://alas.aws.amazon.com/cve/html/CVE-2022-0494.html

https://alas.aws.amazon.com/cve/html/CVE-2022-0812.html

https://alas.aws.amazon.com/cve/html/CVE-2022-1012.html

https://alas.aws.amazon.com/cve/html/CVE-2022-1184.html

https://alas.aws.amazon.com/cve/html/CVE-2022-32250.html

https://alas.aws.amazon.com/cve/html/CVE-2022-32296.html

https://alas.aws.amazon.com/cve/html/CVE-2022-32981.html

Plugin Details

Severity: High

ID: 163232

File Name: al2_ALAS-2022-1813.nasl

Version: 1.7

Type: local

Agent: unix

Published: 7/15/2022

Updated: 1/16/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

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-2022-32250

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.8

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

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

CVSS Score Source: CVE-2022-1012

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python-perf, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-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-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-livepatch-4.14.285-215.501

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: 7/6/2022

Vulnerability Publication Date: 3/25/2022

Reference Information

CVE: CVE-2022-0494, CVE-2022-0812, CVE-2022-1012, CVE-2022-1184, CVE-2022-32250, CVE-2022-32296, CVE-2022-32981