[ GLSA 201711-09 ] LXC: Remote security bypass

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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

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

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

https://security.gentoo.org/

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

 

Severity: Normal

Title: LXC: Remote security bypass

Date: November 11, 2017

Bugs: #636386

ID: 201711-09

 

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

 

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

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