glsa-200704-15.xml


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

<glsa id="200704-15">
  <title>MadWifi: Multiple vulnerabilities</title>
  <synopsis>
    Multiple vulnerabilities have been discovered in the MadWifi driver,
    possibly leading to a Denial of Service and information disclosure.
  </synopsis>
  <product type="ebuild">Madwifi-ng</product>
  <announced>April 17, 2007</announced>
  <revised>April 21, 2007: 02</revised>
  <bug>173434</bug>
  <access>remote</access>
  <affected>
    <package name="net-wireless/madwifi-ng" auto="yes" arch="*">
      <unaffected range="ge">0.9.3</unaffected>
      <vulnerable range="lt">0.9.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    The MadWifi driver provides support for Atheros based IEEE 802.11
    Wireless Lan cards.
    </p>
  </background>
  <description>
    <p>
    The driver does not properly process Channel Switch Announcement
    Information Elements, allowing for an abnormal channel change. The
    ieee80211_input() function does not properly handle AUTH frames and the
    driver sends unencrypted packets before WPA authentication succeeds.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could send specially crafted AUTH frames to the
    vulnerable host, resulting in a Denial of Service by crashing the
    kernel. A remote attacker could gain access to sensitive information
    about network architecture by sniffing unencrypted packets. A remote
    attacker could also send a Channel Switch Count less than or equal to
    one to trigger a channel change, resulting in a communication loss and
    a Denial of Service.
    </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&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7178">CVE-2006-7178</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7179">CVE-2006-7179</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-7180">CVE-2006-7180</uri>
  </references>
  <metadata tag="submitter" timestamp="Wed, 11 Apr 2007 12:32:14 +0000">
    p-y
  </metadata>
  <metadata tag="bugReady" timestamp="Wed, 11 Apr 2007 18:16:05 +0000">
    p-y
  </metadata>
</glsa>