[Full-disclosure] [ GLSA 200510-02 ] Berkeley MPEG Tools: Multiple insecure temporary files

From: Thierry Carrez (koon_at_gentoo.org)
Date: 10/03/05

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    Date: Mon, 03 Oct 2005 18:03:02 +0200
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    Gentoo Linux Security Advisory GLSA 200510-02
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: Berkeley MPEG Tools: Multiple insecure temporary files
          Date: October 03, 2005
          Bugs: #107344
            ID: 200510-02

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    Synopsis
    ========

    The Berkeley MPEG Tools use temporary files in various insecure ways,
    potentially allowing a local user to overwrite arbitrary files.

    Background
    ==========

    The Berkeley MPEG Tools are a collection of utilities for manipulating
    MPEG video technology, including an encoder (mpeg_encode) and various
    conversion utilities.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 media-video/mpeg-tools < 1.5b-r2 >= 1.5b-r2

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

    Mike Frysinger of the Gentoo Security Team discovered that mpeg_encode
    and the conversion utilities were creating temporary files with
    predictable or fixed filenames. The 'test' make target of the MPEG
    Tools also relied on several temporary files created insecurely.

    Impact
    ======

    A local attacker could create symbolic links in the temporary files
    directory, pointing to a valid file somewhere on the filesystem. When
    the utilities are executed (or 'make test' is run), this would result
    in the file being overwritten with the rights of the user running the
    command.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Berkeley MPEG Tools users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=media-video/mpeg-tools-1.5b-r2"

    References
    ==========

      [ 1 ] CAN-2005-3115
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3115

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

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

      http://security.gentoo.org/glsa/glsa-200510-02.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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