Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3676-2)

medium Nessus Plugin ID 110477
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Synopsis

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

Description

USN-3676-1 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.

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations.
An attacker could use this to specially craft an ext4 file system that caused a denial of service (system crash) when mounted.
(CVE-2018-1092, CVE-2018-1093)

It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-10940)

It was discovered that the 802.11 software simulator implementation in the Linux kernel contained a memory leak when handling certain error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2018-8087).

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/3676-2/

Plugin Details

Severity: Medium

ID: 110477

File Name: ubuntu_USN-3676-2.nasl

Version: 1.6

Type: local

Agent: unix

Published: 6/12/2018

Updated: 9/17/2020

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.1

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

CVSS v3

Risk Factor: Medium

Base Score: 5.5

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

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

Patch Publication Date: 6/11/2018

Vulnerability Publication Date: 3/13/2018

Reference Information

CVE: CVE-2018-8087, CVE-2018-1092, CVE-2018-1093, CVE-2018-10940

USN: 3676-2