[arch-security] [Arch Linux Security Advisory ASA-201411-1] tnftp: arbitrary command execution

[Levente Polyak]

Arch Linux Security Advisory ASA-201411-1
=========================================

Severity: High
Date    : 2014-11-01
CVE-ID  : CVE-2014-8517
Package : tnftp
Type    : arbitrary command execution
Remote  : No
Link    : https://wiki.archlinux.org/index.php/CVE-2014

Summary
=======

The package tnftp before version 20141031-1 is vulnerable to arbitrary
command execution.

Resolution
==========

Upgrade to 20141031-1.

# pacman -Syu "tnftp>=20141031-1"

The problem has been fixed upstream in version 20141031.

Workaround
==========

Specifying the output filename with -o when using tnftp with HTTP will
prevent from arbitrary command execution.

Description
===========

A malicious webserver can trick tnftp below 20141031 via HTTP redirects
into executing arbitrary commands.

Impact
======

A malicious webserver can create an evil redirect which will execute
arbitrary commands when a local user fetches that URL with tnftp.

References
==========

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-8517
https://bugzilla.redhat.com/show_bug.cgi?id=1158286
https://bugs.archlinux.org/task/42646
http://seclists.org/oss-sec/2014/q4/459

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