glsa-201706-07.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201706-07">
  <title>Libtirpc and RPCBind: Denial of Service </title>
  <synopsis>A vulnerability has been found in Libtirpc and RPCBind which may
    allow a remote attacker to cause a Denial of Service condition.
  </synopsis>
  <product type="ebuild">RPCBind,Libtirpc</product>
  <announced>2017-06-06</announced>
  <revised count="2">2017-06-06</revised>
  <bug>617472</bug>
  <access>remote</access>
  <affected>
    <package name="net-nds/rpcbind" auto="yes" arch="*">
      <unaffected range="ge">0.2.4-r1</unaffected>
      <vulnerable range="lt">0.2.4-r1</vulnerable>
    </package>
    <package name="net-libs/libtirpc" auto="yes" arch="*">
      <unaffected range="ge">1.0.1-r1</unaffected>
      <vulnerable range="lt">1.0.1-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>The RPCBind utility is a server that converts RPC program numbers into
      universal addresses.
    </p>
    
    <p>Libtirpc is a port of Suns Transport-Independent RPC library to Linux.</p>
  </background>
  <description>
    <p>It was found that due to the way RPCBind uses libtirpc (libntirpc), a
      memory leak can occur when parsing specially crafted XDR messages.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could send thousands of messages to RPCBind, possibly
      resulting in a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All RPCBind users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-nds/rpcbind-0.2.4-r1"
    </code>
    
    <p>All Libtirpc users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-libs/libtirpc-1.0.1-r1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-8779">CVE-2017-8779</uri>
  </references>
  <metadata tag="requester" timestamp="2017-05-21T07:26:12Z">BlueKnight</metadata>
  <metadata tag="submitter" timestamp="2017-06-06T11:58:19Z">whissi</metadata>
</glsa>