glsa-201711-03.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201711-03">
  <title>hostapd and wpa_supplicant: Key Reinstallation (KRACK) attacks</title>
  <synopsis>A flaw was discovered in the 4-way handshake in hostapd and
    wpa_supplicant that allows attackers to conduct a Man in the Middle attack.
  </synopsis>
  <product type="ebuild">hostapd,wpa_supplicant</product>
  <announced>2017-11-10</announced>
  <revised count="1">2017-11-10</revised>
  <bug>634436</bug>
  <bug>634438</bug>
  <access>local, remote</access>
  <affected>
    <package name="net-wireless/hostapd" auto="yes" arch="*">
      <unaffected range="ge">2.6-r1</unaffected>
      <vulnerable range="lt">2.6-r1</vulnerable>
    </package>
    <package name="net-wireless/wpa_supplicant" auto="yes" arch="*">
      <unaffected range="ge">2.6-r3</unaffected>
      <vulnerable range="lt">2.6-r3</vulnerable>
    </package>
  </affected>
  <background>
    <p>wpa_supplicant is a WPA Supplicant with support for WPA and WPA2 (IEEE
      802.11i / RSN). hostapd is a user space daemon for access point and
      authentication servers.
    </p>
  </background>
  <description>
    <p>WiFi Protected Access (WPA and WPA2) and it’s associated technologies
      are all vulnerable to the KRACK attacks. Please review the referenced CVE
      identifiers for details.
    </p>
  </description>
  <impact type="normal">
    <p>An attacker can carry out the KRACK attacks on a wireless network in
      order to gain access to network clients. Once achieved, the attacker can
      potentially harvest confidential information (e.g. HTTP/HTTPS), inject
      malware, or perform a myriad of other attacks.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All hostapd users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-wireless/hostapd-2.6-r1"
    </code>
    
    <p>All wpa_supplicant users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose
      "&gt;=net-wireless/wpa_supplicant-2.6-r3"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13077">
      CVE-2017-13077
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13078">
      CVE-2017-13078
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13079">
      CVE-2017-13079
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13080">
      CVE-2017-13080
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13081">
      CVE-2017-13081
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13082">
      CVE-2017-13082
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13084">
      CVE-2017-13084
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13086">
      CVE-2017-13086
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13087">
      CVE-2017-13087
    </uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-13088">
      CVE-2017-13088
    </uri>
    <uri link="https://www.krackattacks.com/">KRACK Attacks Website</uri>
  </references>
  <metadata tag="requester" timestamp="2017-10-26T21:01:58Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2017-11-10T22:39:05Z">b-man</metadata>
</glsa>