[Full-disclosure] [ GLSA 200511-19 ] eix: Insecure temporary file creation

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 11/22/05

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    To: gentoo-announce@gentoo.org
Date: Tue, 22 Nov 2005 23:33:07 +0100

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    Gentoo Linux Security Advisory GLSA 200511-19
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: eix: Insecure temporary file creation
          Date: November 22, 2005
          Bugs: #112061
            ID: 200511-19

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    Synopsis
    ========

    eix has an insecure temporary file creation vulnerability, potentially
    allowing a local user to overwrite arbitrary files.

    Background
    ==========

    eix is a small utility for searching ebuilds with indexing for fast
    results.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-portage/eix < 0.5.0_pre2 >= 0.5.0_pre2
                                                              *>= 0.3.0-r2

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

    Eric Romang discovered that eix creates a temporary file with a
    predictable name. eix creates a temporary file in /tmp/eix.*.sync where
    * is the process ID of the shell running eix.

    Impact
    ======

    A local attacker can watch the process list and determine the process
    ID of the shell running eix while the "emerge --sync" command is
    running, then create a link from the corresponding temporary file to a
    system file, which would result in the file being overwritten with the
    rights of the user running the application.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All eix users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose app-portage/eix

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

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

      http://security.gentoo.org/glsa/glsa-200511-19.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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