Date: Tue, 11 Jan 2005 17:34:44 +0100
From: Thierry Carrez <koon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200501-21 ] HylaFAX: hfaxd unauthorized login vulnerability
X-Enigmail-Version: 0.89.5.0
X-Enigmail-Supports: pgp-inline, pgp-mime
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature";
boundary="------------enigCA237E81BFB6435EB26AB917"
X-Virus-Scanned: antivirus-gw at tyumen.ru
This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enigCA237E81BFB6435EB26AB917
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200501-21
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: HylaFAX: hfaxd unauthorized login vulnerability
Date: January 11, 2005
Bugs: #75941
ID: 200501-21
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
HylaFAX is subject to a vulnerability in its username matching code,
potentially allowing remote users to bypass access control lists.
Background
==========
HylaFAX is a software package for sending and receiving facsimile
messages.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/hylafax < 4.2.0-r2 >= 4.2.0-r2
Description
===========
The code used by hfaxd to match a given username and hostname with an
entry in the hosts.hfaxd file is insufficiently protected against
malicious entries.
Impact
======
If the HylaFAX installation uses a weak hosts.hfaxd file, a remote
attacker could authenticate using a malicious username or hostname and
bypass the intended access restrictions.
Workaround
==========
As a workaround, administrators may consider adding passwords to all
entries in the hosts.hfaxd file.
Resolution
==========
All HylaFAX users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/hylafax-4.2.0-r2"
Note: Due to heightened security, weak entries in the hosts.hfaxd file
may no longer work. Please see the HylaFAX documentation for details of
accepted syntax in the hosts.hfaxd file.
References
==========
[ 1 ] CAN-2004-1182
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1182
[ 2 ] HylaFAX Announcement
http://marc.theaimsgroup.com/?l=hylafax&m=110545119911558&w=2
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200501-21.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 2005 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/2.0
--------------enigCA237E81BFB6435EB26AB917
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
iD8DBQFB5AApvcL1obalX08RAl+4AJ9F/XZQzTAYwfzqxXvZEmb2TtBErACfYdj/
wNQSWKh683QEPrMVV0Sndr4=
=PN/0
-----END PGP SIGNATURE-----
--------------enigCA237E81BFB6435EB26AB917--
