Ubuntu 16.04 LTS : linux-kvm vulnerabilities (USN-3549-1) (Spectre)

Medium Nessus Plugin ID 106483

Synopsis

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

Description

Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715, CVE-2017-5753).

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 linux-image-4.4-kvm and / or linux-image-kvm packages.

Plugin Details

Severity: Medium

ID: 106483

File Name: ubuntu_USN-3549-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2018/01/30

Modified: 2018/05/25

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.7

Temporal Score: 4.5

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

Temporal Vector: CVSS2#E:F/RL:ND/RC:ND

CVSSv3

Base Score: 5.6

Temporal Score: 5.4

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

Temporal Vector: CVSS:3.0/E:F/RL:X/RC:X

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm, cpe:/o:canonical:ubuntu_linux:16.04

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: 2018/01/29

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2017-5715, CVE-2017-5753

USN: 3549-1

IAVA: 2018-A-0020