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[gentoo-announce] [ GLSA 201702-10 ] NTFS-3G: Privilege escalation

Posted on 19 February 2017
Gentoo-announce

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From: Thomas Deutschmann <whissi@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <a95f225f-faf8-6af5-8ecc-20f45f4e2ef3@gentoo.org>
Subject: [ GLSA 201702-10 ] NTFS-3G: Privilege escalation

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Gentoo Linux Security Advisory GLSA 201702-10
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https://security.gentoo.org/
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Severity: Normal
Title: NTFS-3G: Privilege escalation
Date: February 19, 2017
Bugs: #607912
ID: 201702-10

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Synopsis
========
A vulnerability in NTFS-3G allows local users to gain root privileges.

Background
==========
NTFS-3G is a stable, full-featured, read-write NTFS driver for various
operating systems.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-fs/ntfs3g < 2016.2.22-r2 >= 2016.2.22-r2

Description
===========
The NTFS-3G driver does not properly clear environment variables before
invoking mount or umount.

This flaw is similar to the vulnerability described in "GLSA-201701-19"
and "GLSA-201603-04" referenced below but is now implemented in the
NTFS-3G driver itself.

Impact
======
A local user could gain root privileges.

Workaround
==========
There is no known workaround at this time. However, on Gentoo when the
"suid" USE flag is not set (which is the default) an attacker cannot
exploit the flaw.

Resolution
==========
All NTFS-3G users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-fs/ntfs3g-2016.2.22-r2"

References
==========
[ 1 ] CVE-2017-0358
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-0358
[ 2 ] GLSA-201603-04
https://security.gentoo.org/glsa/201603-04
[ 3 ] GLSA-201701-19
https://security.gentoo.org/glsa/201701-19

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

https://security.gentoo.org/glsa/201702-10

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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