[ GLSA 200501-38 ] Perl: rmtree and DBI tmpfile vulnerabilities

From: Thierry Carrez (koon_at_gentoo.org)
Date: 01/26/05

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    Date: Wed, 26 Jan 2005 21:40:15 +0100
To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200501-38
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: Perl: rmtree and DBI tmpfile vulnerabilities
          Date: January 26, 2005
          Bugs: #78634, #75696
            ID: 200501-38

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    Synopsis
    ========

    The Perl DBI library and File::Path::rmtree function are vulnerable to
    symlink attacks.

    Background
    ==========

    Perl is a cross platform programming language. The DBI is the standard
    database interface module for Perl.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 dev-perl/dbi <= 1.38 *>= 1.37-r1
    >= 1.38-r1
      2 dev-lang/perl <= 5.8.6-r1 >= 5.8.6-r2
                                                              *>= 5.8.5-r3
                                                              *>= 5.8.4-r2
                                                              *>= 5.8.2-r2
        -------------------------------------------------------------------
         2 affected packages on all of their supported architectures.
        -------------------------------------------------------------------

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

    Javier Fernandez-Sanguino Pena discovered that the DBI library creates
    temporary files in an insecure, predictable way (CAN-2005-0077). Paul
    Szabo found out that "File::Path::rmtree" also handles temporary files
    insecurely (CAN-2004-0452).

    Impact
    ======

    A local attacker could create symbolic links in the temporary files
    directory that point to a valid file somewhere on the filesystem. When
    the DBI library or File::Path::rmtree is executed, this could be used
    to overwrite files with the rights of the user calling these functions.

    Workaround
    ==========

    There are no known workarounds at this time.

    Resolution
    ==========

    All Perl users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose dev-lang/perl

    All DBI library users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose dev-perl/dbi

    References
    ==========

      [ 1 ] CAN-2005-0077
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0077
      [ 2 ] CAN-2004-0452
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452

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

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

      http://security.gentoo.org/glsa/glsa-200501-38.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

  • Next message: Thierry Carrez: "[ GLSA 200501-37 ] GraphicsMagick: PSD decoding heap overflow"

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