[Full-disclosure] [ GLSA 200507-29 ] pstotext: Remote execution of arbitrary code

From: Stefan Cornelius (dercorny_at_gentoo.org)
Date: 07/31/05

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To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200507-29
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: pstotext: Remote execution of arbitrary code
          Date: July 31, 2005
          Bugs: #100245
            ID: 200507-29

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    Synopsis
    ========

    pstotext contains a vulnerability which can potentially result in the
    execution of arbitrary code.

    Background
    ==========

    pstotext is a program that works with GhostScript to extract plain text
    from PostScript and PDF files.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-text/pstotext < 1.8g-r1 >= 1.8g-r1

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

    Max Vozeler reported that pstotext calls the GhostScript interpreter on
    untrusted PostScript files without specifying the -dSAFER option.

    Impact
    ======

    An attacker could craft a malicious PostScript file and entice a user
    to run pstotext on it, resulting in the execution of arbitrary commands
    with the permissions of the user running pstotext.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All pstotext users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=app-text/pstotext-1.8g-r1"

    References
    ==========

      [ 1 ] Secunia Advisory SA16183
            http://secunia.com/advisories/16183/

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

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

      http://security.gentoo.org/glsa/glsa-200507-29.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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