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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : QEMU vulnerabilities (USN-4650-1)

medium Nessus Plugin ID 143376

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4650-1 advisory.

 Alexander Bulekov discovered that QEMU incorrectly handled SDHCI device emulation. 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 on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.

 (CVE-2020-17380)

 Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-25084)

 Sergej Schumilo, Cornelius Aschermann, and Simon Wrner discovered that QEMU incorrectly handled SDHCI device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-25085)

 Gaoning Pan, Yongkang Jia, and Yi Ren discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
 (CVE-2020-25624)

 It was discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest could use this issue to cause QEMU to hang, resulting in a denial of service. (CVE-2020-25625)

 Cheolwoo Myung discovered that QEMU incorrectly handled USB device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-25723)

 Gaoning Pan discovered that QEMU incorrectly handled ATI graphics device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2020-27616)

 Gaoning Pan discovered that QEMU incorrectly handled networking. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-27617)

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-4650-1

Plugin Details

Severity: Medium

ID: 143376

File Name: ubuntu_USN-4650-1.nasl

Version: 1.14

Type: local

Agent: unix

Published: 12/1/2020

Updated: 8/29/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

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-2020-17380

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: 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, p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64, 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-x86-xen, 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, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, 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: 11/30/2020

Vulnerability Publication Date: 9/25/2020

Reference Information

CVE: CVE-2020-17380, CVE-2020-25084, CVE-2020-25085, CVE-2020-25624, CVE-2020-25625, CVE-2020-25723, CVE-2020-27616, CVE-2020-27617

IAVB: 2020-B-0063-S, 2020-B-0075-S

USN: 4650-1