[ GLSA 200411-24 ] BNC: Buffer overflow vulnerability

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 11/16/04

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    To: gentoo-announce@gentoo.org
    Date: Tue, 16 Nov 2004 11:05:27 +0100
    
    
    

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    Gentoo Linux Security Advisory GLSA 200411-24
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                                                http://security.gentoo.org/
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      Severity: High
         Title: BNC: Buffer overflow vulnerability
          Date: November 16, 2004
          Bugs: #70674
            ID: 200411-24

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    Synopsis
    ========

    BNC contains a buffer overflow vulnerability that may lead to Denial of
    Service and execution of arbitrary code.

    Background
    ==========

    BNC (BouNCe) is an IRC proxy server.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 net-irc/bnc < 2.9.1 >= 2.9.1

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

    Leon Juranic discovered that BNC fails to do proper bounds checking
    when checking server response.

    Impact
    ======

    An attacker could exploit this to cause a Denial of Service and
    potentially execute arbitary code with the permissions of the user
    running BNC.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All BNC users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=net-irc/bnc-2.9.1"

    References
    ==========

      [ 1 ] BNC ChangeLog
            http://gotbnc.com/changes.html
      [ 2 ] LSS-2004-11-03
            http://security.lss.hr/en/index.php?page=details&ID=LSS-2004-11-03

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

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

      http://security.gentoo.org/glsa/glsa-200411-24.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 2004 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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