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[gentoo-announce] [ GLSA 201611-05 ] tnftp: Arbitrary code execution

Posted on 15 November 2016
Gentoo-announce

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <b0c8eed7-c7fd-e628-bf85-dc1742c1fea2@gentoo.org>
Subject: [ GLSA 201611-05 ] tnftp: Arbitrary code execution

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Gentoo Linux Security Advisory GLSA 201611-05
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https://security.gentoo.org/
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Severity: Normal
Title: tnftp: Arbitrary code execution
Date: November 15, 2016
Bugs: #527302
ID: 201611-05

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Synopsis
========
tnftp is vulnerable to remote code execution if output file is not
specified.

Background
==========
tnftp is a NetBSD FTP client with several advanced features.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-ftp/tnftp < 20141104 >= 20141104

Description
===========
The fetch_url function in usr.bin/ftp/fetch.c allows remote attackers
to execute arbitrary commands via a | (pipe) character at the end of an
HTTP redirect.

Impact
======
A remote attacker could possibly execute arbitrary code with the
privileges of the process.

Workaround
==========
There is no known workaround at this time.

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

<code>
# emerge --sync
# emerge --ask --verbose --oneshot ">=net-ftp/tnftp-20141104"

References
==========
[ 1 ] CVE-2014-8517
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8517

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

https://security.gentoo.org/glsa/201611-05

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 2016 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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