[ GLSA 200412-25 ] CUPS: Multiple vulnerabilities

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200412-25
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                                            http://security.gentoo.org/
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  Severity: High
     Title: CUPS: Multiple vulnerabilities
      Date: December 28, 2004
      Bugs: #74479, #75197
        ID: 200412-25

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Synopsis
========

Multiple vulnerabilities have been found in CUPS, ranging from local
Denial of Service attacks to the remote execution of arbitrary code.

Background
==========

The Common UNIX Printing System (CUPS) is a cross-platform print
spooler, hpgltops is a CUPS filter handling printing of HPGL files and
lppasswd is a program used locally to manage spooler passwords.

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

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  net-print/cups     < 1.1.23_rc1                     >= 1.1.23_rc1

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

CUPS makes use of vulnerable Xpdf code to handle PDF files
(CAN-2004-1125). Furthermore, Ariel Berkman discovered a buffer
overflow in the ParseCommand function in hpgl-input.c in the hpgltops
program (CAN-2004-1267). Finally, Bartlomiej Sieka discovered several
problems in the lppasswd program: it ignores some write errors
(CAN-2004-1268), it can leave the passwd.new file in place
(CAN-2004-1269) and it does not verify that passwd.new file is
different from STDERR (CAN-2004-1270).

Impact
======

The Xpdf and hpgltops vulnerabilities may be exploited by a remote
attacker to execute arbitrary code by sending specific print jobs to a
CUPS spooler. The lppasswd vulnerabilities may be exploited by a local
attacker to write data to the CUPS password file or deny further
password modifications.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All CUPS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-print/cups-1.1.23_rc1"

References
==========

  [ 1 ] CAN-2004-1125
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1125
  [ 2 ] CAN-2004-1267
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1267
  [ 3 ] CAN-2004-1268
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1268
  [ 4 ] CAN-2004-1269
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1269
  [ 5 ] CAN-2004-1270
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1270
  [ 6 ] Ariel Berkman Advisory
        http://tigger.uic.edu/~jlongs2/holes/cups.txt
  [ 7 ] Bartlomiej Sieka Advisory
        http://tigger.uic.edu/~jlongs2/holes/cups2.txt

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

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

  http://security.gentoo.org/glsa/glsa-200412-25.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/2.0

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