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Ubuntu 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-5307-1)

high Nessus Plugin ID 158457

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5307-1 advisory.

 Gaoning Pan discovered that QEMU incorrectly handled the floppy disk emulator. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2021-20196)

 Gaoning Pan discovered that the QEMU vmxnet3 NIC emulator incorrectly handled certain values. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
 (CVE-2021-20203)

 It was discovered that the QEMU vhost-user GPU device contained several security issues. An attacker inside the guest could use these issues to cause QEMU to crash, resulting in a denial of service, leak sensitive information, or possibly execute arbitrary code. This issue only affected Ubuntu 21.10.
 (CVE-2021-3544, CVE-2021-3545, CVE-2021-3546)

 It was discovered that QEMU incorrectly handled bulk transfers from SPICE clients. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-3682)

 It was discovered that the QEMU UAS device emulation incorrectly handled certain stream numbers. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 21.10. (CVE-2021-3713)

 It was discovered that the QEMU virtio-net device incorrectly handled certain buffer addresses. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code.

 (CVE-2021-3748)

 It was discovered that the QEMU SCSI device emulation incorrectly handled certain MODE SELECT commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2021-3930)

 It was discovered that the QEMU ACPI logic incorrectly handled certain values. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.10. (CVE-2021-4158)

 Jietao Xiao, Jinku Li, Wenbo Shen, and Nanzi Yang discovered that the QEMU virtiofsd device incorrectly handled permissions when creating files. An attacker inside the guest could use this issue to create files inside the directory shared by virtiofs with unintended permissions, possibly allowing privilege escalation. This issue only affected Ubuntu 21.10. (CVE-2022-0358)

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5307-1

Plugin Details

Severity: High

ID: 158457

File Name: ubuntu_USN-5307-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 2/28/2022

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2021-3748

CVSS v3

Risk Factor: High

Base Score: 8.5

Temporal Score: 7.6

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

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

CVSS Score Source: CVE-2021-3682

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86-xen, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qemu-system-common, p-cpe:/a:canonical:ubuntu_linux:qemu-user, p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent, p-cpe:/a:canonical:ubuntu_linux:qemu-system-gui, p-cpe:/a:canonical:ubuntu_linux:qemu-system, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qemu-user-static, p-cpe:/a:canonical:ubuntu_linux:qemu-kvm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips, p-cpe:/a:canonical:ubuntu_linux:qemu, p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86, p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86-microvm, p-cpe:/a:canonical:ubuntu_linux:qemu-utils, p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc, p-cpe:/a:canonical:ubuntu_linux:qemu-user-binfmt, p-cpe:/a:canonical:ubuntu_linux:qemu-system-data, p-cpe:/a:canonical:ubuntu_linux:qemu-block-extra, p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/28/2022

Vulnerability Publication Date: 12/3/2020

Reference Information

CVE: CVE-2021-20196, CVE-2021-20203, CVE-2021-3544, CVE-2021-3545, CVE-2021-3546, CVE-2021-3682, CVE-2021-3713, CVE-2021-3748, CVE-2021-3930, CVE-2021-4158, CVE-2022-0358

IAVB: 2020-B-0075-S

USN: 5307-1