glsa-201703-03.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201703-03">
  <title>PuTTY: Buffer overflow </title>
  <synopsis>A buffer overflow in PuTTY might allow remote attackers to execute
    arbitrary code or cause a denial of service.
  </synopsis>
  <product type="ebuild">PuTTY</product>
  <announced>2017-03-19</announced>
  <revised>2017-03-19: 1</revised>
  <bug>610552</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/putty" auto="yes" arch="*">
      <unaffected range="ge">0.68</unaffected>
      <vulnerable range="lt">0.68</vulnerable>
    </package>
  </affected>
  <background>
    <p>PuTTY is a free implementation of Telnet and SSH for Windows and Unix
      platforms, along with an xterm terminal emulator.
    </p>
  </background>
  <description>
    <p>A heap-corrupting buffer overflow bug in the ssh_agent_channel_data
      function of PuTTY was found.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker, utilizing the SSH agent forwarding of an SSH server,
      could execute arbitrary code with the privileges of the user running the
      client or cause a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All PuTTY users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-misc/putty-0.68"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6542">CVE-2017-6542</uri>
  </references>
  <metadata tag="requester" timestamp="2017-03-07T21:53:38Z">BlueKnight</metadata>
  <metadata tag="submitter" timestamp="2017-03-19T18:47:02Z">BlueKnight</metadata>
</glsa>