Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3848-2)

critical Nessus Plugin ID 119831
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

USN-3848-1 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 double free existed in the AMD GPIO 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-2017-18174)

It was discovered that an integer overrun vulnerability existed in the POSIX timers implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2018-12896)

Kanda Motohiro discovered that writing extended attributes to an XFS file system in the Linux kernel in certain situations could cause an error condition to occur. A local attacker could use this to cause a denial of service. (CVE-2018-18690)

It was discovered that an integer overflow vulnerability existed in the CDROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-18710).

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 packages.

See Also

https://usn.ubuntu.com/3848-2/

Plugin Details

Severity: Critical

ID: 119831

File Name: ubuntu_USN-3848-2.nasl

Version: 1.5

Type: local

Agent: unix

Published: 12/21/2018

Updated: 9/17/2020

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-4.4-aws:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-4.4-generic:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-4.4-lowlatency:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-aws:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-generic-lts-xenial:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-lowlatency-lts-xenial:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-4.4-generic-lpae:*:*:*:*:*:*:*, p-cpe:2.3:a:canonical:ubuntu_linux:linux-image-generic-lpae-lts-xenial:*:*:*:*:*:*:*

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2018

Vulnerability Publication Date: 2/11/2018

Reference Information

CVE: CVE-2017-18174, CVE-2018-12896, CVE-2018-18710, CVE-2018-18690

USN: 3848-2