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SUSE SLES15 Security Update : libvirt (SUSE-SU-2022:0045-1)

medium Nessus Plugin ID 156634

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Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0045-1 advisory.

 - A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash. (CVE-2021-3975)

 - A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition. (CVE-2021-4147)

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

Solution

Update the affected packages.

See Also

https://bugzilla.suse.com/1183411

https://bugzilla.suse.com/1191668

https://bugzilla.suse.com/1192017

https://bugzilla.suse.com/1192876

https://bugzilla.suse.com/1193981

https://bugzilla.suse.com/1194041

https://www.suse.com/security/cve/CVE-2021-3975

https://www.suse.com/security/cve/CVE-2021-4147

http://www.nessus.org/u?d0bd8f6e

Plugin Details

Severity: Medium

ID: 156634

File Name: suse_SU-2022-0045-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 1/12/2022

Updated: 7/14/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2021-4147

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:novell:suse_linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:novell:suse_linux:libvirt-libs, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage, p-cpe:/a:novell:suse_linux:libvirt-daemon-hooks, p-cpe:/a:novell:suse_linux:libvirt-daemon-qemu, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-core, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:novell:suse_linux:libvirt-daemon-config-nwfilter, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-secret, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-libxl, p-cpe:/a:novell:suse_linux:libvirt-daemon-lxc, p-cpe:/a:novell:suse_linux:libvirt-daemon-xen, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-nodedev, p-cpe:/a:novell:suse_linux:libvirt-bash-completion, p-cpe:/a:novell:suse_linux:libvirt-doc, p-cpe:/a:novell:suse_linux:libvirt-admin, p-cpe:/a:novell:suse_linux:libvirt-lock-sanlock, p-cpe:/a:novell:suse_linux:libvirt-devel, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-qemu, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libvirt-daemon-config-network, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-network, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-lxc, p-cpe:/a:novell:suse_linux:libvirt-daemon, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:novell:suse_linux:libvirt-client, p-cpe:/a:novell:suse_linux:libvirt-nss, p-cpe:/a:novell:suse_linux:libvirt, p-cpe:/a:novell:suse_linux:libvirt-daemon-driver-interface

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/11/2022

Vulnerability Publication Date: 3/25/2022

Reference Information

CVE: CVE-2021-3975, CVE-2021-4147

SuSE: SUSE-SU-2022:0045-1