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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202107-28">
<title>GNU Chess: Buffer overflow</title>
<synopsis>A buffer overflow in GNU Chess might allow arbitrary code
execution.
</synopsis>
<product type="ebuild">gnuchess</product>
<announced>2021-07-12</announced>
<revised count="1">2021-07-12</revised>
<bug>780855</bug>
<access>remote</access>
<affected>
<package name="games-board/gnuchess" auto="yes" arch="*">
<unaffected range="ge">6.2.8-r1</unaffected>
<vulnerable range="lt">6.2.8-r1</vulnerable>
</package>
</affected>
<background>
<p>GNU Chess is a console based chess interfae.</p>
</background>
<description>
<p>The cmd_pgnload() and cmd_pgnreplay() functions in cmd.cc in GNU Chess
to not sufficiently validate PGN file input, potentially resulting in a
buffer overflow.
</p>
</description>
<impact type="normal">
<p>A remote attacker could entice a user to open a specially crafted PGN
file using GNU Chess, possibly resulting in execution of arbitrary code
with the privileges of the process or a Denial of Service condition.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All GNU Chess users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=games-board/gnuchess-6.2.8-r1"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-30184">CVE-2021-30184</uri>
</references>
<metadata tag="requester" timestamp="2021-07-06T01:16:05Z">ajak</metadata>
<metadata tag="submitter" timestamp="2021-07-12T02:45:49Z">ajak</metadata>
</glsa>
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