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[gentoo-announce] [ GLSA 201711-09 ] LXC: Remote security bypass
Posted on 11 November 2017
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Gentoo Linux Security Advisory GLSA 201711-09
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https://security.gentoo.org/
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Severity: Normal
Title: LXC: Remote security bypass
Date: November 11, 2017
Bugs: #636386
ID: 201711-09

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Synopsis
========
A vulnerability in LXC may lead to an unauthorized security bypass.

Background
==========
LinuX Containers userspace utilities

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/lxc < 2.0.7 >= 2.0.7

Description
===========
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.

Resolution
==========
All LXC users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/lxc-2.0.7"

References
==========
[ 1 ] CVE-2016-10124
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10124

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

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

Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
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Gentoo Linux Security Advisory GLSA 201711-09
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 https://security.gentoo.org/
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 Severity: Normal
 Title: LXC: Remote security bypass
 Date: November 11, 2017
 Bugs: #636386
 ID: 201711-09
 
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Synopsis
========
 
A vulnerability in LXC may lead to an unauthorized security bypass.
 
Background
==========
 
LinuX Containers userspace utilities 
 
Affected packages
=================
 
 -------------------------------------------------------------------
 Package / Vulnerable / Unaffected
 -------------------------------------------------------------------
 1 app-emulation/lxc < 2.0.7 >= 2.0.7 
 
Description
===========
 
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.
 
Resolution
==========
 
All LXC users should upgrade to the latest version:
 
 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-emulation/lxc-2.0.7"
 
References
==========
 
[ 1 ] CVE-2016-10124
 https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10124
 
Availability
============
 
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
 
 https://security.gentoo.org/glsa/201711-09
 
Concerns?
=========
 
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
 
License
=======
 
Copyright 2017 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
 
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
 
http://creativecommons.org/licenses/by-sa/2.5</body></html>
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