[ GLSA 200404-17 ] ipsec-tools and iputils contain a remote DoS vulnerability

From: Kurt Lieber (klieber_at_gentoo.org)
Date: 04/24/04

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    Date: Sat, 24 Apr 2004 03:05:02 -0400
To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200404-17
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: ipsec-tools and iputils contain a remote DoS vulnerability

          Date: April 24, 2004
          Bugs: #48847
            ID: 200404-17

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    Synopsis
    ========

    racoon, which is included in the ipsec-tools and iputils packages in
    Portage, does not check the length of ISAKMP headers. Attackers may be
    able to craft an ISAKMP header of sufficient length to consume all
    available system resoources, causing a Denial of Service.

    Background
    ==========

    From http://ipsec-tools.sourceforge.net/ :

    "IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec
    implementation."

    iputils is a collection of network monitoring tools, including racoon,
    ping and ping6.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
         net-firewall/ipsec-tools < 0.3.1 >= 0.3.1
         net-misc/iputils == 021109-r1 == 021109-r3

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

    When racoon receives an ISAKMP header, it allocates memory based on the
    length of the header field. Thus, an attacker may be able to cause a
    Denial of Services by creating a header that is large enough to consume
    all available system resources.

    Impact
    ======

    This vulnerability may allow an attacker to remotely cause a Denial of
    Service.

    Workaround
    ==========

    A workaround is not currently known for this issue. All users are
    advised to upgrade to the latest version of the affected package.

    Resolution
    ==========

    ipsec-tools users should upgrade to version 0.2.5 or later:

        # emerge sync

        # emerge -pv ">=net-firewall/ipsec-tools-0.3.1"
        # emerge ">=net-firewall/ipsec-tools-0.3.1"

    iputils users should upgrade to version 021109-r3 or later:

        # emerge sync

        # emerge -pv ">=net-misc/iputils-021109-r3"
        # emerge ">=net-misc/iputils-021109-r3"

    References
    ==========

      [ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0403

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

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

         http://security.gentoo.org/glsa/glsa-200404-17.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 Technologies, 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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