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Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : libvirt vulnerability and update (USN-3680-1)

medium Nessus Plugin ID 110515

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Synopsis

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

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3680-1 advisory.

 Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update allows libvirt to expose new CPU features added by microcode updates to guests. (CVE-2018-3639)

 Daniel P. Berrange discovered that libvirt incorrectly handled the QEMU guest agent. An attacker could possibly use this issue to consume resources, leading to a denial of service. (CVE-2018-1064)

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-3680-1

Plugin Details

Severity: Medium

ID: 110515

File Name: ubuntu_USN-3680-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 6/13/2018

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: Medium

Score: 6.7

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2018-3639

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libvirt-clients, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libvirt0, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-zfs, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-sheepdog, p-cpe:/a:canonical:ubuntu_linux:libvirt-sanlock, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-driver-storage-gluster, p-cpe:/a:canonical:ubuntu_linux:libvirt-daemon-system, p-cpe:/a:canonical:ubuntu_linux:libnss-libvirt, p-cpe:/a:canonical:ubuntu_linux:libvirt-bin, p-cpe:/a:canonical:ubuntu_linux:libvirt-dev, p-cpe:/a:canonical:ubuntu_linux:libvirt-wireshark

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: 6/12/2018

Vulnerability Publication Date: 3/28/2018

Reference Information

CVE: CVE-2018-1064, CVE-2018-3639

USN: 3680-1