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Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-3641-1)

high Nessus Plugin ID 109650

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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 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3641-1 advisory.

 Nick Peterson discovered that the Linux kernel did not properly handle debug exceptions following a MOV/POP to SS instruction. A local attacker could use this to cause a denial of service (system crash).
 This issue only affected the amd64 architecture. (CVE-2018-8897)

 Andy Lutomirski discovered that the KVM subsystem of the Linux kernel did not properly emulate the ICEBP instruction following a MOV/POP to SS instruction. A local attacker in a KVM virtual machine could use this to cause a denial of service (guest VM crash) or possibly escalate privileges inside of the virtual machine. This issue only affected the i386 and amd64 architectures. (CVE-2018-1087)

 Andy Lutomirski discovered that the Linux kernel did not properly perform error handling on virtualized debug registers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-1000199)

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 kernel package.

See Also

https://ubuntu.com/security/notices/USN-3641-1

Plugin Details

Severity: High

ID: 109650

File Name: ubuntu_USN-3641-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 5/9/2018

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: Critical

Score: 9.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2018-8897

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1092-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1019-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1023-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-41-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-41-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-1026-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-lowlatency, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1089-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-1015-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-41-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1057-aws, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-1016-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-124-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-147-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-9027-euclid

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: 5/8/2018

Vulnerability Publication Date: 5/8/2018

Exploitable With

Metasploit (Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability)

Reference Information

CVE: CVE-2018-1000199, CVE-2018-1087, CVE-2018-8897

USN: 3641-1