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AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2021:5238)

medium Nessus Plugin ID 158843

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:5238 advisory.

 - An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
 (CVE-2021-3930)

 - An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-20257)

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

Solution

Update the affected packages.

See Also

https://errata.almalinux.org/8/ALSA-2021-5238.html

Plugin Details

Severity: Medium

ID: 158843

File Name: alma_linux_ALSA-2021-5238.nasl

Version: 1.4

Type: local

Published: 3/11/2022

Updated: 11/21/2022

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-3930

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: p-cpe:/a:alma:linux:libguestfs-gfs2, p-cpe:/a:alma:linux:libguestfs-gobject, p-cpe:/a:alma:linux:python3-hivex, p-cpe:/a:alma:linux:lua-guestfs, p-cpe:/a:alma:linux:libvirt-daemon-driver-network, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:alma:linux:nbdkit-example-plugins, p-cpe:/a:alma:linux:nbdkit-python-plugin, p-cpe:/a:alma:linux:nbdkit-vddk-plugin, p-cpe:/a:alma:linux:libguestfs-tools-c, p-cpe:/a:alma:linux:qemu-kvm-block-ssh, p-cpe:/a:alma:linux:nbdkit-basic-filters, p-cpe:/a:alma:linux:nbdfuse, p-cpe:/a:alma:linux:libguestfs-java-devel, p-cpe:/a:alma:linux:libvirt-daemon-config-network, p-cpe:/a:alma:linux:libguestfs-man-pages-ja, p-cpe:/a:alma:linux:qemu-img, p-cpe:/a:alma:linux:ruby-libguestfs, p-cpe:/a:alma:linux:nbdkit, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:alma:linux:libiscsi-devel, p-cpe:/a:alma:linux:nbdkit-ssh-plugin, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-core, p-cpe:/a:alma:linux:python3-libguestfs, p-cpe:/a:alma:linux:libguestfs-winsupport, p-cpe:/a:alma:linux:libguestfs-benchmarking, p-cpe:/a:alma:linux:qemu-guest-agent, p-cpe:/a:alma:linux:nbdkit-devel, p-cpe:/a:alma:linux:python3-libnbd, p-cpe:/a:alma:linux:ruby-hivex, p-cpe:/a:alma:linux:supermin, p-cpe:/a:alma:linux:nbdkit-bash-completion, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-iscsi-direct, p-cpe:/a:alma:linux:libvirt, p-cpe:/a:alma:linux:libguestfs-gobject-devel, p-cpe:/a:alma:linux:netcf-devel, p-cpe:/a:alma:linux:qemu-kvm-block-gluster, p-cpe:/a:alma:linux:qemu-kvm-block-rbd, p-cpe:/a:alma:linux:libnbd-devel, p-cpe:/a:alma:linux:netcf-libs, p-cpe:/a:alma:linux:libguestfs-rescue, p-cpe:/a:alma:linux:qemu-kvm-core, p-cpe:/a:alma:linux:libguestfs-tools, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:alma:linux:libvirt-devel, p-cpe:/a:alma:linux:libguestfs-xfs, p-cpe:/a:alma:linux:nbdkit-linuxdisk-plugin, p-cpe:/a:alma:linux:libguestfs-java, p-cpe:/a:alma:linux:libguestfs-bash-completion, p-cpe:/a:alma:linux:libvirt-daemon-config-nwfilter, p-cpe:/a:alma:linux:libvirt-daemon-kvm, p-cpe:/a:alma:linux:libguestfs-devel, p-cpe:/a:alma:linux:libvirt-bash-completion, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:alma:linux:libiscsi-utils, p-cpe:/a:alma:linux:libguestfs-inspect-icons, p-cpe:/a:alma:linux:libvirt-daemon-driver-interface, p-cpe:/a:alma:linux:libguestfs-rsync, p-cpe:/a:alma:linux:qemu-kvm-block-curl, p-cpe:/a:alma:linux:virt-v2v, p-cpe:/a:alma:linux:libvirt-lock-sanlock, p-cpe:/a:alma:linux:nbdkit-basic-plugins, p-cpe:/a:alma:linux:nbdkit-gzip-plugin, p-cpe:/a:alma:linux:perl-sys-virt, p-cpe:/a:alma:linux:seabios, p-cpe:/a:alma:linux:libvirt-docs, p-cpe:/a:alma:linux:libguestfs-man-pages-uk, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:alma:linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:alma:linux:perl-sys-guestfs, p-cpe:/a:alma:linux:libvirt-admin, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:libvirt-nss, p-cpe:/a:alma:linux:hivex, p-cpe:/a:alma:linux:nbdkit-server, p-cpe:/a:alma:linux:libiscsi, p-cpe:/a:alma:linux:qemu-kvm, p-cpe:/a:alma:linux:perl-hivex, p-cpe:/a:alma:linux:supermin-devel, p-cpe:/a:alma:linux:sgabios, p-cpe:/a:alma:linux:libguestfs, p-cpe:/a:alma:linux:qemu-kvm-block-iscsi, p-cpe:/a:alma:linux:qemu-kvm-common, p-cpe:/a:alma:linux:libvirt-daemon-driver-secret, p-cpe:/a:alma:linux:nbdkit-curl-plugin, p-cpe:/a:alma:linux:sgabios-bin, p-cpe:/a:alma:linux:seavgabios-bin, p-cpe:/a:alma:linux:netcf, p-cpe:/a:alma:linux:libvirt-daemon-driver-nodedev, p-cpe:/a:alma:linux:seabios-bin, p-cpe:/a:alma:linux:virt-dib, p-cpe:/a:alma:linux:python3-libvirt, p-cpe:/a:alma:linux:libvirt-dbus, p-cpe:/a:alma:linux:libvirt-daemon-driver-qemu, p-cpe:/a:alma:linux:libvirt-client, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:alma:linux:libvirt-libs, p-cpe:/a:alma:linux:nbdkit-xz-filter, p-cpe:/a:alma:linux:hivex-devel, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:alma:linux:libguestfs-javadoc, p-cpe:/a:alma:linux:libvirt-daemon, p-cpe:/a:alma:linux:libnbd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/21/2021

Vulnerability Publication Date: 12/3/2020

Reference Information

CVE: CVE-2021-20257, CVE-2021-3930

IAVB: 2020-B-0075-S