glsa-201702-01.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201702-01">
  <title>PCSC-Lite: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in PCSC-Lite, the worst of
    which could lead to privilege escalation. 
  </synopsis>
  <product type="ebuild">PCSC-Lite</product>
  <announced>2017-02-01</announced>
  <revised count="1">2017-02-01</revised>
  <bug>604574</bug>
  <access>local</access>
  <affected>
    <package name="sys-apps/pcsc-lite" auto="yes" arch="*">
      <unaffected range="ge">1.8.20</unaffected>
      <vulnerable range="lt">1.8.20</vulnerable>
    </package>
  </affected>
  <background>
    <p>PCSC-Lite is a middleware to access a smart card using the SCard API
      (PC/SC).
    </p>
  </background>
  <description>
    <p>The SCardReleaseContext function normally releases resources associated
      with the given handle (including “cardsList”) and clients should
      cease using this handle. However, a malicious client can make the daemon
      invoke SCardReleaseContext and continue issuing other commands that use
      “cardsList”, resulting in a use-after-free. When SCardReleaseContext
      is invoked multiple times it additionally results in a double-free of
      “cardsList”.
    </p>
  </description>
  <impact type="normal">
    <p>A local attacker could use a malicious client to connect to pcscd’s
      Unix socket, possibly resulting in a Denial of Service condition or
      privilege escalation since the daemon is running as root.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All PCSC-Lite users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-apps/pcsc-lite-1.8.20"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10109">
      CVE-2016-10109
    </uri>
  </references>
  <metadata tag="requester" timestamp="2017-01-30T01:16:33Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2017-02-01T02:32:53Z">whissi</metadata>
</glsa>