[ GLSA 200502-01 ] FireHOL: Insecure temporary file creation

From: Matthias Geerdsen (vorlon_at_gentoo.org)
Date: 02/01/05

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    Date: Tue, 1 Feb 2005 21:08:21 +0100
To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200502-01
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: FireHOL: Insecure temporary file creation
          Date: February 01, 2005
          Bugs: #79330
            ID: 200502-01

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    Synopsis
    ========

    FireHOL is vulnerable to symlink attacks, potentially allowing a local
    user to overwrite arbitrary files.

    Background
    ==========

    FireHOL is an iptables rules generator.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-firewall/firehol < 1.224 >= 1.224

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

    FireHOL insecurely creates temporary files with predictable names.

    Impact
    ======

    A local attacker could create malicious symbolic links to arbitrary
    system files. When FireHOL is executed, this could lead to these files
    being overwritten with the rights of the user launching FireHOL,
    usually the root user.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All FireHOL users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-firewall/firehol-1.224"

    References
    ==========

      [ 1 ] FireHOL CVS log
            http://cvs.sourceforge.net/viewcvs.py/firehol/firehol/firehol.sh

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

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

      http://security.gentoo.org/glsa/glsa-200502-01.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

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