[ GLSA 200411-17 ] mtink: Insecure tempfile handling

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 11/09/04

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    Gentoo Linux Security Advisory GLSA 200411-17
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: mtink: Insecure tempfile handling
          Date: November 09, 2004
          Bugs: #70310
            ID: 200411-17

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    Synopsis
    ========

    mtink is vulnerable to symlink attacks, potentially allowing a local
    user to overwrite arbitrary files with the rights of the user running
    the utility.

    Background
    ==========

    mtink is a status monitor and inkjet cartridge changer for some Epson
    printers.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-print/mtink < 1.0.5 >= 1.0.5

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

    Tavis Ormandy from Gentoo Linux discovered that mtink uses insecure
    permissions on temporary files.

    Impact
    ======

    A local attacker could create symbolic links in the temporary files
    directory, pointing to a valid file somewhere on the filesystem. When
    mtink is executed, this would result in the file being overwritten with
    the rights of the user running the utility, which could be the root
    user.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All mtink users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-print/mtink-1.0.5"

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

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

      http://security.gentoo.org/glsa/glsa-200411-17.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

    
    



  • Next message: Jay D. Dyson: "Re: Evidence Mounts that the Vote Was Hacked"

    Relevant Pages

    • [Full-Disclosure] [ GLSA 200411-17 ] mtink: Insecure tempfile handling
      ... user to overwrite arbitrary files with the rights of the user running ... mtink is a status monitor and inkjet cartridge changer for some Epson ... Tavis Ormandy from Gentoo Linux discovered that mtink uses insecure ... Security is a primary focus of Gentoo Linux and ensuring the ...
      (Full-Disclosure)
    • [ GLSA 200411-17 ] mtink: Insecure tempfile handling
      ... user to overwrite arbitrary files with the rights of the user running ... mtink is a status monitor and inkjet cartridge changer for some Epson ... Tavis Ormandy from Gentoo Linux discovered that mtink uses insecure ... Security is a primary focus of Gentoo Linux and ensuring the ...
      (Full-Disclosure)