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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2318-1)

high Nessus Plugin ID 77237

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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-2318-1 advisory.

 Eric W. Biederman discovered a flaw with the mediation of mount flags in the Linux kernel's user namespace subsystem. An unprivileged user could exploit this flaw to by-pass mount restrictions, and potentially gain administrative privileges. (CVE-2014-5207)

 Kenton Varda discovered a flaw with read-only bind mounds when used with user namespaces. An unprivileged local user could exploit this flaw to gain full write privileges to a mount that should be read only.
 (CVE-2014-5206)

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-2318-1

Plugin Details

Severity: High

ID: 77237

File Name: ubuntu_USN-2318-1.nasl

Version: 1.14

Type: local

Agent: unix

Published: 8/18/2014

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2014-5206

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2014-5207

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-34-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: 8/18/2014

Vulnerability Publication Date: 8/18/2014

Reference Information

CVE: CVE-2014-5206, CVE-2014-5207

BID: 69214, 69216

USN: 2318-1