Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : QEMU vulnerabilities (USN-4191-1)

Medium Nessus Plugin ID 131017

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VPR Score: 8.4

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that the LSI SCSI adapter emulator implementation in QEMU did not properly validate executed scripts. A local attacker could use this to cause a denial of service. (CVE-2019-12068)

Sergej Schumilo, Cornelius Aschermann and Simon Worner discovered that the qxl paravirtual graphics driver implementation in QEMU contained a NULL pointer dereference. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-12155)

Riccardo Schirone discovered that the QEMU bridge helper did not properly validate network interface names. A local attacker could possibly use this to bypass ACL restrictions. (CVE-2019-13164)

It was discovered that a heap-based buffer overflow existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host. (CVE-2019-14378)

It was discovered that a use-after-free vulnerability existed in the SLiRP networking implementation of QEMU. A local attacker in a guest could use this to cause a denial of service. (CVE-2019-15890).

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://usn.ubuntu.com/4191-1/

Plugin Details

Severity: Medium

ID: 131017

File Name: ubuntu_USN-4191-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2019/11/14

Updated: 2020/09/17

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 8.4

CVSS v2.0

Base Score: 6.5

Temporal Score: 5.1

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:qemu, p-cpe:/a:canonical:ubuntu_linux:qemu-kvm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-common, p-cpe:/a:canonical:ubuntu_linux:qemu-system-gui, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86, p-cpe:/a:canonical:ubuntu_linux:qemu-user-static, p-cpe:/a:canonical:ubuntu_linux:qemu-utils, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04, cpe:/o:canonical:ubuntu_linux:19.10

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: 2019/11/14

Vulnerability Publication Date: 2019/05/24

Reference Information

CVE: CVE-2019-12068, CVE-2019-12155, CVE-2019-13164, CVE-2019-14378, CVE-2019-15890

USN: 4191-1