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Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3581-2)

high Nessus Plugin ID 106970

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3581-2 advisory.

 USN-3581-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS.

 Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712)

 ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code, (CVE-2017-15115)

 Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-8824)

 USN-3541-2 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 16.04 LTS.
 This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures.
 Original advisory details:

 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)

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-3581-2

Plugin Details

Severity: High

ID: 106970

File Name: ubuntu_USN-3581-2.nasl

Version: 3.15

Type: local

Agent: unix

Published: 2/23/2018

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.6

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-2017-8824

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-4.13.0-36-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-36-generic-lpae, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-1011-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-36-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.13.0-1021-oem

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/22/2018

Vulnerability Publication Date: 11/15/2017

Reference Information

CVE: CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824

IAVA: 2018-A-0020

USN: 3581-2