GLSA-201808-02 : LinuX Containers user space utilities: Arbitrary file read

Low Nessus Plugin ID 112076

Synopsis

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

Description

The remote host is affected by the vulnerability described in GLSA-201808-02 (LinuX Containers user space utilities: Arbitrary file read)

lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn’t otherwise be able to reach.
Impact :

A local unprivileged user could use this flaw to access arbitrary files, including special device files.
Workaround :

There is no known workaround at this time.

Solution

All LXC users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/lxc-3.0.1-r1'

See Also

https://security.gentoo.org/glsa/201808-02

Plugin Details

Severity: Low

ID: 112076

File Name: gentoo_GLSA-201808-02.nasl

Version: 1.1

Type: local

Published: 2018/08/23

Modified: 2018/08/23

Dependencies: 12634

Risk Information

Risk Factor: Low

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:lxc, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2018/08/22

Reference Information

CVE: CVE-2018-6556

GLSA: 201808-02