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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 pcscds
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>