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Ubuntu 14.04 LTS : LXC vulnerabilities (USN-2675-1)

medium Nessus Plugin ID 84957

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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 packages installed that are affected by multiple vulnerabilities as referenced in the USN-2675-1 advisory.

 Roman Fiedler discovered that LXC had a directory traversal flaw when creating lock files. A local attacker could exploit this flaw to create an arbitrary file as the root user. (CVE-2015-1331)

 Roman Fiedler discovered that LXC incorrectly trusted the container's proc filesystem to set up AppArmor profile changes and SELinux domain transitions. A local attacker could exploit this flaw to run programs inside the container that are not confined by AppArmor or SELinux. (CVE-2015-1334)

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 packages.

See Also

https://ubuntu.com/security/notices/USN-2675-1

Plugin Details

Severity: Medium

ID: 84957

File Name: ubuntu_USN-2675-1.nasl

Version: 2.11

Type: local

Agent: unix

Published: 7/23/2015

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: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.8

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

CVSS Score Source: CVE-2015-1331

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

CVSS Score Source: CVE-2015-1334

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python3-lxc, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:lxc-templates, p-cpe:/a:canonical:ubuntu_linux:lxc-tests, p-cpe:/a:canonical:ubuntu_linux:lxc-dev, p-cpe:/a:canonical:ubuntu_linux:lxc, p-cpe:/a:canonical:ubuntu_linux:liblxc1

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: 7/22/2015

Vulnerability Publication Date: 8/12/2015

Reference Information

CVE: CVE-2015-1331, CVE-2015-1334

USN: 2675-1