[ GLSA 200511-15 ] Smb4k: Local unauthorized file access

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 11/18/05

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    To: gentoo-announce@gentoo.org
Date: Fri, 18 Nov 2005 16:10:13 +0100

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    Gentoo Linux Security Advisory GLSA 200511-15
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                                                http://security.gentoo.org/
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      Severity: High
         Title: Smb4k: Local unauthorized file access
          Date: November 18, 2005
          Bugs: #111089
            ID: 200511-15

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    Synopsis
    ========

    A vulnerability has been identified that allows unauthorized access to
    the contents of /etc/sudoers and /etc/super.tab files.

    Background
    ==========

    Smb4K is a SMB/CIFS share browser for KDE.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-misc/smb4k < 0.6.4 >= 0.6.4

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

    A vulnerability leading to unauthorized file access has been found. A
    pre-existing symlink from /tmp/sudoers and /tmp/super.tab to a textfile
    will cause Smb4k to write the contents of these files to the target of
    the symlink, as Smb4k does not check for the existence of these files
    before writing to them.

    Impact
    ======

    An attacker could acquire local privilege escalation by adding
    username(s) to the list of sudoers.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All smb4k users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-misc/smb4k-0.6.4"

    References
    ==========

      [ 1 ] CVE-2005-2851
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2851
      [ 2 ] Smb4k Announcement
            http://smb4k.berlios.de/

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

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

      http://security.gentoo.org/glsa/glsa-200511-15.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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