[Full-Disclosure] [ GLSA 200501-44 ] ncpfs: Multiple vulnerabilities

From: Thierry Carrez (koon_at_gentoo.org)
Date: 01/30/05

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    Date: Sun, 30 Jan 2005 19:55:45 +0100
To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200501-44
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: ncpfs: Multiple vulnerabilities
          Date: January 30, 2005
          Bugs: #77414
            ID: 200501-44

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    Synopsis
    ========

    The ncpfs utilities contain multiple flaws, potentially resulting in
    the remote execution of arbitrary code or local file access with
    elevated privileges.

    Background
    ==========

    ncpfs is a NCP protocol network filesystem driver that allows access to
    NetWare services, to mount volumes of NetWare servers or print to
    NetWare print queues.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-fs/ncpfs < 2.2.6 >= 2.2.6

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

    Erik Sjolund discovered two vulnerabilities in the programs bundled
    with ncpfs: there is a potentially exploitable buffer overflow in
    ncplogin (CAN-2005-0014), and due to a flaw in nwclient.c, utilities
    using the NetWare client functions insecurely access files with
    elevated privileges (CAN-2005-0013).

    Impact
    ======

    The buffer overflow might allow a malicious remote NetWare server to
    execute arbitrary code on the NetWare client. Furthermore, a local
    attacker may be able to create links and access files with elevated
    privileges using SUID ncpfs utilities.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All ncpfs users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-fs/ncpfs-2.2.6"

    References
    ==========

      [ 1 ] CAN-2005-0013
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0013
      [ 2 ] CAN-2005-0014
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0014
      [ 3 ] ncpfs ChangeLog
            ftp://platan.vc.cvut.cz/pub/linux/ncpfs/Changes-2.2.6

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

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

      http://security.gentoo.org/glsa/glsa-200501-44.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

    _______________________________________________
    Full-Disclosure - We believe in it.
    Charter: http://lists.netsys.com/full-disclosure-charter.html

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