GLSA 200408-17: rsync: Potential information leakage
Posted on: 08/18/2004 03:14 AM

A rsync update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200408-17
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http://security.gentoo.org/
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Severity: Normal
Title: rsync: Potential information leakage
Date: August 17, 2004
Bugs: #60309
ID: 200408-17

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Synopsis
=======

rsync fails to properly sanitize paths. This vulnerability could allow the listing of arbitrary files and allow file overwriting outside module's path on rsync server configurations that allow uploading.

Background
=========

rsync is a utility that provides fast incremental file transfers. It is used to efficiently synchronize files between hosts and is used by emerge to fetch Gentoo's Portage tree. rsyncd is the rsync daemon, which listens to connections from rsync clients.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 net-misc/rsync <= 2.6.0-r2 >= 2.6.0-r3

Description
==========

The paths sent by the rsync client are not checked thoroughly enough. It does not affect the normal send/receive filenames that specify what files should be transferred. It does affect certain option paths that cause auxilliary files to be read or written.

Impact
=====

When rsyncd is used without chroot ("use chroot = false" in the rsyncd.conf file), this vulnerability could allow the listing of arbitrary files outside module's path and allow file overwriting outside module's path on rsync server configurations that allows uploading. Both possibilities are exposed only when chroot option is disabled.

Workaround
=========

You should never set the rsync daemon to run with "use chroot = false".

Resolution
=========

All users should update to the latest version of the rsync package.

# emerge sync

# emerge -pv ">=net-misc/rsync-2.6.0-r3"
# emerge ">=net-misc/rsync-2.6.0-r3"

References
=========

[ 1 ] rsync Advisory
http://samba.org/rsync/#security_aug04
[ 2 ] rsync 2.6.2 announcement
http://lists.samba.org/archive/rsync-announce/2004/000017.html

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

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

http://security.gentoo.org/glsa/glsa-200408-17.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 http://bugs.gentoo.org.

License
======

Copyright 2004 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/1.0


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