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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202003-32">
<title>Libgcrypt: Side-channel attack</title>
<synopsis>A vulnerability in Libgcrypt could allow a local attacker to
recover sensitive information.
</synopsis>
<product type="ebuild">libgcrypt</product>
<announced>2020-03-15</announced>
<revised count="1">2020-03-15</revised>
<bug>693108</bug>
<access>local</access>
<affected>
<package name="dev-libs/libgcrypt" auto="yes" arch="*">
<unaffected range="ge">1.8.5</unaffected>
<vulnerable range="lt">1.8.5</vulnerable>
</package>
</affected>
<background>
<p>Libgcrypt is a general purpose cryptographic library derived out of
GnuPG.
</p>
</background>
<description>
<p>A timing attack was found in the way ECCDSA was implemented in
Libgcrypt.
</p>
</description>
<impact type="low">
<p>A local man-in-the-middle attacker, during signature generation, could
possibly recover the private key.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All Libgcrypt users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=dev-libs/libgcrypt-1.8.5"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-13627">CVE-2019-13627</uri>
</references>
<metadata tag="requester" timestamp="2020-03-15T19:23:38Z">whissi</metadata>
<metadata tag="submitter" timestamp="2020-03-15T19:29:34Z">whissi</metadata>
</glsa>