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Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3405-2)

high Nessus Plugin ID 102819

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Synopsis

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

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3405-2 advisory.

 USN-3405-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS.

 It was discovered that a use-after-free vulnerability existed in the POSIX message queue 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-2017-11176)

 Huang Weller discovered that the ext4 filesystem implementation in the Linux kernel mishandled a needs- flushing-before-commit list. A local attacker could use this to expose sensitive information.
 (CVE-2017-7495)

 It was discovered that a buffer overflow existed in the Broadcom FullMAC WLAN driver in the Linux kernel.
 A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7541)

 It was discovered that the Linux kernel did not honor the UEFI secure boot mode when performing a kexec operation. A local attacker could use this to bypass secure boot restrictions. (CVE-2015-7837)

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-3405-2

Plugin Details

Severity: High

ID: 102819

File Name: ubuntu_USN-3405-2.nasl

Version: 3.14

Type: local

Agent: unix

Published: 8/29/2017

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: High

Score: 8.9

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-2017-7541

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: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-93-generic

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: 8/28/2017

Vulnerability Publication Date: 5/15/2017

Reference Information

CVE: CVE-2015-7837, CVE-2017-11176, CVE-2017-7495, CVE-2017-7541

USN: 3405-2