glsa-200711-09.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">

<glsa id="200711-09">
  <title>MadWifi: Denial of Service</title>
  <synopsis>
    MadWifi does not correctly process beacon frames which can lead to a
    remotely triggered Denial of Service.
  </synopsis>
  <product type="ebuild">madwifi-ng</product>
  <announced>November 07, 2007</announced>
  <revised>November 07, 2007: 01</revised>
  <bug>195705</bug>
  <access>remote</access>
  <affected>
    <package name="net-wireless/madwifi-ng" auto="yes" arch="*">
      <unaffected range="ge">0.9.3.3</unaffected>
      <vulnerable range="lt">0.9.3.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    The MadWifi driver provides support for Atheros based IEEE 802.11
    Wireless Lan cards.
    </p>
  </background>
  <description>
    <p>
    Clemens Kolbitsch and Sylvester Keil reported an error when processing
    beacon frames with an overly large "length" value in the "xrates"
    element.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could act as an access point and send a specially
    crafted packet to an Atheros based wireless client, possibly resulting
    in a Denial of Service (kernel panic).
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All MadWifi users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-wireless/madwifi-ng-0.9.3.3&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5448">CVE-2007-5448</uri>
  </references>
  <metadata tag="requester" timestamp="Fri, 02 Nov 2007 23:16:45 +0000">
    p-y
  </metadata>
  <metadata tag="submitter" timestamp="Sat, 03 Nov 2007 23:18:04 +0000">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="Sat, 03 Nov 2007 23:18:55 +0000">
    rbu
  </metadata>
</glsa>