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