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Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-2974-1)

critical Nessus Plugin ID 91122

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Synopsis

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

Description

Zuozhi Fzz discovered that QEMU incorrectly handled USB OHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2391)

Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2392)

Qinghao Tang discovered that QEMU incorrectly handled USB Net emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes. (CVE-2016-2538)

Hongke Yang discovered that QEMU incorrectly handled NE2000 emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service.
(CVE-2016-2841)

Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes. (CVE-2016-2857)

It was discovered that QEMU incorrectly handled the PRNG back-end support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS.
(CVE-2016-2858)

Wei Xiao and Qinghao Tang discovered that QEMU incorrectly handled access in the VGA module. A privileged 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-2016-3710)

Zuozhi Fzz discovered that QEMU incorrectly handled access in the VGA module. A privileged 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-2016-3712)

Oleksandr Bazhaniuk discovered that QEMU incorrectly handled Luminary Micro Stellaris ethernet controller emulation. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-4001)

Oleksandr Bazhaniuk discovered that QEMU incorrectly handled MIPSnet controller emulation. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2016-4002)

Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged attacker inside the guest could use this issue to possibly leak host memory bytes. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-4020)

Du Shaobo discovered that QEMU incorrectly handled USB EHCI emulation support. A privileged attacker inside the guest could use this issue to cause QEMU to consume resources, resulting in a denial of service.
(CVE-2016-4037).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-2974-1

Plugin Details

Severity: Critical

ID: 91122

File Name: ubuntu_USN-2974-1.nasl

Version: 2.13

Type: local

Agent: unix

Published: 5/13/2016

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2016-3710

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS Score Source: CVE-2016-4002

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:qemu-kvm, p-cpe:/a:canonical:ubuntu_linux:qemu-system, p-cpe:/a:canonical:ubuntu_linux:qemu-system-aarch64, p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-common, p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips, p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x, p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86, p-cpe:/a:canonical:ubuntu_linux:qemu-user, p-cpe:/a:canonical:ubuntu_linux:qemu-user-binfmt, p-cpe:/a:canonical:ubuntu_linux:qemu-user-static, p-cpe:/a:canonical:ubuntu_linux:qemu-utils, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qemu, p-cpe:/a:canonical:ubuntu_linux:qemu-block-extra, p-cpe:/a:canonical:ubuntu_linux:qemu-common, p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent, p-cpe:/a:canonical:ubuntu_linux:qemu-keymaps

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2016

Vulnerability Publication Date: 4/7/2016

Reference Information

CVE: CVE-2016-2391, CVE-2016-2392, CVE-2016-2538, CVE-2016-2841, CVE-2016-2857, CVE-2016-2858, CVE-2016-3710, CVE-2016-3712, CVE-2016-4001, CVE-2016-4002, CVE-2016-4020, CVE-2016-4037

USN: 2974-1