GLSA-201711-09 : LXC: Remote security bypass

Medium Nessus Plugin ID 104517

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-201711-09 (LXC: Remote security bypass)

Previous versions of lxc-attach ran a shell or the specified command without allocating a pseudo terminal making it vulnerable to input faking via a TIOCSTI ioctl call.
Impact :

Remote attackers can escape the container and perform unauthorized modifications.
Workaround :

There is no know workaround at this time.

Solution

All LXC users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/lxc-2.0.7'

See Also

https://security.gentoo.org/glsa/201711-09

Plugin Details

Severity: Medium

ID: 104517

File Name: gentoo_GLSA-201711-09.nasl

Version: $Revision: 3.2 $

Type: local

Published: 2017/11/13

Modified: 2018/01/26

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 5

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

CVSSv3

Base Score: 8.6

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

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: 2017/11/11

Reference Information

CVE: CVE-2016-10124

GLSA: 201711-09