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Message-ID: <m1CoPQ2-000puTC__19402.5567420342$1105468186$gmane$org@finlandia.Infodrom.North.DE>
Date: Tue, 11 Jan 2005 18:02:58 +0100 (CET)
From: joey@...odrom.org (Martin Schulze)
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 634-1] New hylafax packages fix unauthorised access


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- --------------------------------------------------------------------------
Debian Security Advisory DSA 634-1                     security@...ian.org
http://www.debian.org/security/                             Martin Schulze
January 11th, 2005                      http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : hylafax
Vulnerability  : weak hostname and username validation
Problem-Type   : local/remote
Debian-specific: no
CVE ID         : CAN-2004-1182

Patrice Fournier discovered a vulnerability in the authorisation
subsystem of hylafax, a flexible client/server fax system.  A local or
remote user guessing the contents of the hosts.hfaxd database could
gain unauthorised access to the fax system.

Some installations of hylafax may actually utilise the weak hostname
and username validation for authorized uses.  For example, hosts.hfaxd
entries that may be common are

  192.168.0
  username:uid:pass:adminpass
  user@...t

After updating, these entries will need to be modified in order to
continue to function.  Respectively, the correct entries should be

  192.168.0.[0-9]+
  username@:uid:pass:adminpass
  user@...t

Unless such maching of "username" with "otherusername" and "host" with
"hostname" is desired, the proper form of these entries should include
the delimiter and markers like this

  @192.168.0.[0-9]+$
  ^username@:uid:pass:adminpass
  ^user@...t$

For the stable distribution (woody) this problem has been fixed in
version 4.1.1-3.1.

For the unstable distribution (sid) this problem has been fixed in
version 4.2.1-1.

We recommend that you upgrade your hylafax packages.


Upgrade Instructions
- --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-3.1.dsc
      Size/MD5 checksum:      739 1f06652425050fe27826e5cc1a6c23ff
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-3.1.diff.gz
      Size/MD5 checksum:   115695 79a4e2c1a5c4d0fc8920b8c86b67d3ba
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1.orig.tar.gz
      Size/MD5 checksum:  1287689 1ed081750be70a800708699b7568e17e

  Architecture independent components:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-doc_4.1.1-3.1_all.deb
      Size/MD5 checksum:   318204 e8e94228255e35a1b5ccec1605405a53

  Alpha architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_alpha.deb
      Size/MD5 checksum:   556274 9e1f383c7d6949a4dd8b36c661ea62fd
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_alpha.deb
      Size/MD5 checksum:  1362416 61b25a20d4627904e2d04355724ec7b5

  ARM architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_arm.deb
      Size/MD5 checksum:   445564 53d052214836978819eda025cb0556af
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_arm.deb
      Size/MD5 checksum:  1095574 e109dd83be65856939e4ad9d708e70ff

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_i386.deb
      Size/MD5 checksum:   462598 57fb47be9b22cc74f4d72fd1e8230e29
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_i386.deb
      Size/MD5 checksum:  1132694 9f8aa28b677b3a6c57182e54d6908262

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_ia64.deb
      Size/MD5 checksum:   615696 89157ac78717f6a487a996dccf7e204d
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_ia64.deb
      Size/MD5 checksum:  1491800 95a9c52342251ed55f79ffb5baeda567

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_hppa.deb
      Size/MD5 checksum:   501548 ff673c6c47e8d64ea0ec9e2b02d51cb5
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_hppa.deb
      Size/MD5 checksum:  1231206 aad630516c55efd0ba9843fae532af30

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_m68k.deb
      Size/MD5 checksum:   451214 ba331696f8fdaf75794aa43bee08363d
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_m68k.deb
      Size/MD5 checksum:  1100004 dbe19e34a750650e659d26424e3b8b66

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_powerpc.deb
      Size/MD5 checksum:   450314 30e9b943f372fa583fa040300e8fab8e
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_powerpc.deb
      Size/MD5 checksum:  1104150 7ac3cb5c8abd26531e733401bff8c585

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_s390.deb
      Size/MD5 checksum:   441190 f965904a1dd15e4fd1f6b79be39eedc2
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_s390.deb
      Size/MD5 checksum:  1086806 8c7900e8c59149f95dd6f12bc5f02d9f

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-3.1_sparc.deb
      Size/MD5 checksum:   433580 b05f2aa9f1a6f3ef907b05a5921ed232
    http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-3.1_sparc.deb
      Size/MD5 checksum:  1082482 e2dce8bb66267336dca745dab65836ac


  These files will probably be moved into the stable distribution on
  its next update.

- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@...ts.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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