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Amazon Linux 2022 : qemu, qemu-audio-alsa, qemu-audio-oss (ALAS2022-2022-050)

high Nessus Plugin ID 164724

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Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-050 advisory.

 A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. (CVE-2018-13405)

 A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system. (CVE-2022-0358)

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 'dnf update --releasever=2022.0.20220419 qemu' to update your system.

See Also

https://alas.aws.amazon.com/AL2022/ALAS-2022-050.html

https://alas.aws.amazon.com/cve/html/CVE-2018-13405.html

https://alas.aws.amazon.com/cve/html/CVE-2022-0358.html

Plugin Details

Severity: High

ID: 164724

File Name: al2022_ALAS2022-2022-050.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/6/2022

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2018-13405

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2022-0358

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:qemu-system-riscv-core-debuginfo, p-cpe:/a:amazon:linux:qemu-pr-helper-debuginfo, p-cpe:/a:amazon:linux:qemu-system-sparc-core, p-cpe:/a:amazon:linux:qemu-system-or1k, p-cpe:/a:amazon:linux:qemu-kvm, p-cpe:/a:amazon:linux:qemu-guest-agent-debuginfo, p-cpe:/a:amazon:linux:qemu-audio-spice, p-cpe:/a:amazon:linux:qemu-device-display-virtio-vga-gl, p-cpe:/a:amazon:linux:qemu-block-nfs, p-cpe:/a:amazon:linux:qemu-system-aarch64-core, p-cpe:/a:amazon:linux:qemu-system-sparc-core-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-pci, p-cpe:/a:amazon:linux:qemu-debugsource, p-cpe:/a:amazon:linux:qemu-system-mips-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-arm-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-mips-core, p-cpe:/a:amazon:linux:qemu-system-tricore-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-xtensa, p-cpe:/a:amazon:linux:qemu-device-display-vhost-user-gpu-debuginfo, p-cpe:/a:amazon:linux:qemu-guest-agent, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-pci-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-debuginfo, p-cpe:/a:amazon:linux:qemu-common-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-qxl, p-cpe:/a:amazon:linux:qemu-system-alpha-core, p-cpe:/a:amazon:linux:qemu-system-nios2-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-tricore, p-cpe:/a:amazon:linux:qemu-ui-gtk, p-cpe:/a:amazon:linux:qemu-ui-egl-headless, p-cpe:/a:amazon:linux:qemu-system-microblaze, cpe:/o:amazon:linux:2022, p-cpe:/a:amazon:linux:qemu-audio-oss-debuginfo, p-cpe:/a:amazon:linux:qemu-device-usb-redirect-debuginfo, p-cpe:/a:amazon:linux:qemu-system-cris-core, p-cpe:/a:amazon:linux:qemu-block-dmg-debuginfo, p-cpe:/a:amazon:linux:qemu-system-or1k-core, p-cpe:/a:amazon:linux:qemu-system-sh4-core, p-cpe:/a:amazon:linux:qemu-system-sh4, p-cpe:/a:amazon:linux:qemu-system-riscv, p-cpe:/a:amazon:linux:qemu-audio-sdl, p-cpe:/a:amazon:linux:qemu-system-hppa-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-x86, p-cpe:/a:amazon:linux:qemu-audio-spice-debuginfo, p-cpe:/a:amazon:linux:qemu-system-xtensa-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-cris-core-debuginfo, p-cpe:/a:amazon:linux:qemu-ui-sdl, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-gl-debuginfo, p-cpe:/a:amazon:linux:qemu-system-s390x, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-gl, p-cpe:/a:amazon:linux:qemu-system-cris, p-cpe:/a:amazon:linux:qemu-system-hppa, p-cpe:/a:amazon:linux:qemu-user-static-debuginfo, p-cpe:/a:amazon:linux:qemu-system-x86-core-debuginfo, p-cpe:/a:amazon:linux:qemu-audio-alsa-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-qxl-debuginfo, p-cpe:/a:amazon:linux:qemu-user-binfmt, p-cpe:/a:amazon:linux:qemu-system-aarch64, p-cpe:/a:amazon:linux:qemu-block-dmg, p-cpe:/a:amazon:linux:qemu-block-nfs-debuginfo, p-cpe:/a:amazon:linux:qemu-system-arm-core, p-cpe:/a:amazon:linux:qemu-ui-egl-headless-debuginfo, p-cpe:/a:amazon:linux:qemu-ui-sdl-debuginfo, p-cpe:/a:amazon:linux:qemu-char-baum, p-cpe:/a:amazon:linux:qemu-system-ppc-core-debuginfo, p-cpe:/a:amazon:linux:qemu-user-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-vhost-user-gpu, p-cpe:/a:amazon:linux:qemu-system-riscv-core, p-cpe:/a:amazon:linux:qemu-audio-alsa, p-cpe:/a:amazon:linux:qemu-system-sh4-core-debuginfo, p-cpe:/a:amazon:linux:qemu, p-cpe:/a:amazon:linux:qemu-ui-opengl, p-cpe:/a:amazon:linux:qemu-ui-spice-app, p-cpe:/a:amazon:linux:qemu-user-static, p-cpe:/a:amazon:linux:qemu-system-alpha-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-m68k-core, p-cpe:/a:amazon:linux:qemu-ui-gtk-debuginfo, p-cpe:/a:amazon:linux:qemu-system-alpha, p-cpe:/a:amazon:linux:qemu-system-s390x-core, p-cpe:/a:amazon:linux:qemu-ui-opengl-debuginfo, p-cpe:/a:amazon:linux:qemu-system-hppa-core, p-cpe:/a:amazon:linux:qemu-char-spice, p-cpe:/a:amazon:linux:qemu-device-display-virtio-vga-debuginfo, p-cpe:/a:amazon:linux:qemu-device-usb-host, p-cpe:/a:amazon:linux:qemu-device-usb-smartcard, p-cpe:/a:amazon:linux:qemu-tests, p-cpe:/a:amazon:linux:qemu-device-usb-host-debuginfo, p-cpe:/a:amazon:linux:qemu-debuginfo, p-cpe:/a:amazon:linux:qemu-system-aarch64-core-debuginfo, p-cpe:/a:amazon:linux:qemu-audio-sdl-debuginfo, p-cpe:/a:amazon:linux:qemu-tests-debuginfo, p-cpe:/a:amazon:linux:qemu-device-usb-smartcard-debuginfo, p-cpe:/a:amazon:linux:qemu-system-sparc, p-cpe:/a:amazon:linux:qemu-pr-helper, p-cpe:/a:amazon:linux:qemu-device-display-virtio-vga, p-cpe:/a:amazon:linux:qemu-device-display-virtio-vga-gl-debuginfo, p-cpe:/a:amazon:linux:qemu-system-m68k-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-xtensa-core, p-cpe:/a:amazon:linux:qemu-ui-spice-app-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-ccw-debuginfo, p-cpe:/a:amazon:linux:qemu-block-curl, p-cpe:/a:amazon:linux:qemu-common, p-cpe:/a:amazon:linux:qemu-docs, p-cpe:/a:amazon:linux:qemu-img-debuginfo, p-cpe:/a:amazon:linux:qemu-system-microblaze-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-rx-core-debuginfo, p-cpe:/a:amazon:linux:qemu-system-s390x-core-debuginfo, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-pci-gl, p-cpe:/a:amazon:linux:qemu-audio-pa, p-cpe:/a:amazon:linux:qemu-system-avr-core, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-ccw, p-cpe:/a:amazon:linux:qemu-system-microblaze-core, p-cpe:/a:amazon:linux:qemu-system-ppc-core, p-cpe:/a:amazon:linux:qemu-block-ssh, p-cpe:/a:amazon:linux:qemu-audio-oss, p-cpe:/a:amazon:linux:qemu-block-ssh-debuginfo, p-cpe:/a:amazon:linux:qemu-char-spice-debuginfo, p-cpe:/a:amazon:linux:qemu-system-avr-core-debuginfo, p-cpe:/a:amazon:linux:qemu-ui-curses-debuginfo, p-cpe:/a:amazon:linux:qemu-device-usb-redirect, p-cpe:/a:amazon:linux:qemu-system-rx-core, p-cpe:/a:amazon:linux:qemu-system-rx, p-cpe:/a:amazon:linux:qemu-tools, p-cpe:/a:amazon:linux:qemu-system-nios2-core, p-cpe:/a:amazon:linux:qemu-system-avr, p-cpe:/a:amazon:linux:qemu-user, p-cpe:/a:amazon:linux:qemu-block-iscsi-debuginfo, p-cpe:/a:amazon:linux:qemu-system-arm, p-cpe:/a:amazon:linux:qemu-system-nios2, p-cpe:/a:amazon:linux:qemu-block-iscsi, p-cpe:/a:amazon:linux:qemu-system-or1k-core-debuginfo, p-cpe:/a:amazon:linux:qemu-ui-spice-core, p-cpe:/a:amazon:linux:qemu-system-tricore-core, p-cpe:/a:amazon:linux:qemu-ui-curses, p-cpe:/a:amazon:linux:qemu-system-ppc, p-cpe:/a:amazon:linux:qemu-kvm-core, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu-pci-gl-debuginfo, p-cpe:/a:amazon:linux:qemu-system-x86-core, p-cpe:/a:amazon:linux:qemu-system-m68k, p-cpe:/a:amazon:linux:qemu-device-display-virtio-gpu, p-cpe:/a:amazon:linux:qemu-ui-spice-core-debuginfo, p-cpe:/a:amazon:linux:qemu-tools-debuginfo, p-cpe:/a:amazon:linux:qemu-img, p-cpe:/a:amazon:linux:qemu-system-mips, p-cpe:/a:amazon:linux:qemu-char-baum-debuginfo, p-cpe:/a:amazon:linux:qemu-block-curl-debuginfo, p-cpe:/a:amazon:linux:qemu-audio-pa-debuginfo

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: 4/19/2022

Vulnerability Publication Date: 7/6/2018

Reference Information

CVE: CVE-2018-13405, CVE-2022-0358