Debian DSA-3317-1 : lxc - security update

medium Nessus Plugin ID 84993

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several vulnerabilities have been discovered in LXC, the Linux Containers userspace tools. The Common Vulnerabilities and Exposures project identifies the following problems :

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

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

Solution

Upgrade the lxc packages.

For the stable distribution (jessie), these problems have been fixed in version 1:1.0.6-6+deb8u1.

Plugin Details

Severity: Medium

ID: 84993

File Name: debian_DSA-3317.nasl

Version: 2.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/27/2015

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:lxc, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/25/2015

Reference Information

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

DSA: 3317

Detections

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