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52 lines
1.7 KiB
52 lines
1.7 KiB
<?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="201408-10">
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<title>Libgcrypt: Side-channel attack</title>
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<synopsis>A vulnerability in Libgcrypt could allow a remote attacker to
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extract ElGamal private key information.
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</synopsis>
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<product type="ebuild">libgcrypt,side-channel,elgamal</product>
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<announced>2014-08-29</announced>
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<revised count="1">2014-08-29</revised>
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<bug>519396</bug>
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<access>remote</access>
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<affected>
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<package name="dev-libs/libgcrypt" auto="yes" arch="*">
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<unaffected range="ge">1.5.4</unaffected>
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<vulnerable range="lt">1.5.4</vulnerable>
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</package>
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</affected>
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<background>
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<p>Libgcrypt is a general purpose cryptographic library derived out of
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GnuPG.
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</p>
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</background>
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<description>
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<p>A vulnerability in the implementation of ElGamal decryption procedures
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of Libgcrypt leaks information to various side-channels.
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</p>
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</description>
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<impact type="normal">
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<p>A physical side-channel attack allows a remote attacker to fully extract
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decryption keys during the decryption of a chosen ciphertext.
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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 Libgcrypt 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 ">=dev-libs/libgcrypt-1.5.4"
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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-2014-5270">CVE-2014-5270</uri>
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</references>
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<metadata tag="requester" timestamp="2014-08-24T09:53:40Z">K_F</metadata>
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<metadata tag="submitter" timestamp="2014-08-29T10:08:01Z">K_F</metadata>
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</glsa>
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