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Gentoo Linux Security Advisory                           GLSA 200907-14
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  Severity: Normal
     Title: Rasterbar libtorrent: Directory traversal
      Date: July 17, 2009
      Bugs: #273156, #273961
        ID: 200907-14

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Synopsis
========

A directory traversal vulnerability in Rasterbar libtorrent might allow
a remote attacker to overwrite arbitrary files.

Background
==========

Rasterbar libtorrent is a C++ BitTorrent implementation focusing on
efficiency and scalability. Deluge is a BitTorrent client that ships a
copy of libtorrent.

Affected packages
=================

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  net-libs/rb_libtorrent      < 0.13-r1                  >= 0.13-r1
  2  net-p2p/deluge               < 1.1.9                     >= 1.1.9
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

census reported a directory traversal vulnerability in
src/torrent_info.cpp that can be triggered via .torrent files.

Impact
======

A remote attacker could entice a user or automated system using
Rasterbar libtorrent to load a specially crafted BitTorrent file to
create or overwrite arbitrary files using dot dot sequences in
filenames.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Rasterbar libtorrent users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot -v ">=net-libs/rb_libtorrent-0.13-r1"

All Deluge users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-p2p/deluge-1.1.9"

References
==========

  [ 1 ] CVE-2009-1760
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1760

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200907-14.xml

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 2009 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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