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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3676-1)

medium Nessus Plugin ID 110476

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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-3676-1 advisory.

 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 filesystem 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)

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-3676-1

Plugin Details

Severity: Medium

ID: 110476

File Name: ubuntu_USN-3676-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 6/12/2018

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2018-1093

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

CVSS Score Source: CVE-2018-8087

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1061-aws, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1027-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1091-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-128-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1094-snapdragon

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/11/2018

Vulnerability Publication Date: 3/13/2018

Reference Information

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

USN: 3676-1