ERRATA: [ GLSA 200411-01 ] ppp: No denial of service vulnerability

From: Luke Macken (lewk_at_gentoo.org)
Date: 11/02/04

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    Gentoo Linux Security Advisory GLSA 200411-01
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                                                http://security.gentoo.org/
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      Severity: Low
         Title: ppp: No denial of service vulnerability
          Date: November 01, 2004
          Bugs: #69152
            ID: 200411-01

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    Synopsis
    ========

    pppd contains a bug that allows an attacker to crash his own
    connection, but it cannot be used to deny service to other users.

    Background
    ==========

    ppp is a Unix implementation of the Point-to-Point Protocol.

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

    The pppd server improperly verifies header fields, potentially leading
    to a crash of the pppd process handling the connection. However, since
    a separate pppd process handles each ppp connection, this would not
    affect any other connection, or prevent new connections from being
    established.

    Impact
    ======

    We incorrectly thought that this bug could be exploited to deny service
    to all ppp users. It is not the case, this bug has no security impact
    whatsoever. Many thanks to Paul Mackerras from the Samba team for
    correcting our mistake.

    Workaround
    ==========

    There is no need for a workaround.

    Resolution
    ==========

    ppp users can keep their current versions.

    References
    ==========

      [ 1 ] Incorrect BugTraq Advisory
            http://www.securityfocus.com/archive/1/379450

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

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

      http://security.gentoo.org/glsa/glsa-200411-01.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/1.0

    
    



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