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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201405-27">
<title>LibYAML: Arbitrary code execution</title>
<synopsis>A vulnerability in LibYAML could allow an attacker to execute
arbitrary code or cause a Denial of Service condition.
</synopsis>
<product type="ebuild">libyaml</product>
<announced>2014-05-23</announced>
<revised count="1">2014-05-23</revised>
<bug>505948</bug>
<access>local, remote</access>
<affected>
<package name="dev-libs/libyaml" auto="yes" arch="*">
<unaffected range="ge">0.1.6</unaffected>
<vulnerable range="lt">0.1.6</vulnerable>
</package>
</affected>
<background>
<p>LibYAML is a YAML 1.1 parser and emitter written in C.</p>
</background>
<description>
<p>The yaml_parser_scan_uri_escapes() function does not properly expand
strings passed as input, which can result in a heap-based buffer
overflow.
</p>
</description>
<impact type="normal">
<p>An attacker could provide a specially-crafted YAML document, which, when
parsed by LibYAML, could result in arbitrary code execution or cause the
application to crash.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All LibYAML users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libyaml-0.1.6"
</code>
<p>Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying these packages.
</p>
</resolution>
<references>
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-2525">CVE-2014-2525</uri>
</references>
<metadata tag="requester" timestamp="2014-05-15T03:39:38Z">
BlueKnight
</metadata>
<metadata tag="submitter" timestamp="2014-05-23T08:42:20Z">
creffett
</metadata>
</glsa>
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