57 lines
2.1 KiB
XML
57 lines
2.1 KiB
XML
<?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="201706-22">
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<title>libksba: Denial of Service and information disclosure</title>
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<synopsis>Multiple vulnerabilities have been found in libksba which might
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allow remote attackers to obtain sensitive information or crash an
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libksba-based application.
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</synopsis>
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<product type="ebuild">libksba</product>
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<announced>2017-06-22</announced>
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<revised count="1">2017-06-22</revised>
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<bug>592078</bug>
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<access>remote</access>
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<affected>
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<package name="dev-libs/libksba" auto="yes" arch="*">
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<unaffected range="ge">1.3.5</unaffected>
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<vulnerable range="lt">1.3.5</vulnerable>
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</package>
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</affected>
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<background>
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<p>Libksba is a X.509 and CMS (PKCS#7) library.</p>
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</background>
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<description>
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<p>It was found that an unproportionate amount of memory is allocated when
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parsing crafted certificates in libskba, which may lead to Denial of
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Service condition.
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</p>
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<p>Moreover in libksba 1.3.4, allocated memory is uninitialized and could
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potentially contain sensitive data left in freed memory block.
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</p>
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</description>
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<impact type="normal">
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<p>A remote attacker, able to interact with an libksba-based application,
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could possibly obtain sensitive information or cause a Denial of Service
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condition.
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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 libksba 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/libksba-1.3.5"
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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-2016-4579">CVE-2016-4579</uri>
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<uri link="http://seclists.org/oss-sec/2016/q3/343">Upstream report</uri>
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</references>
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<metadata tag="requester" timestamp="2017-04-19T05:51:10Z">BlueKnight</metadata>
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<metadata tag="submitter" timestamp="2017-06-22T17:42:08Z">whissi</metadata>
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</glsa>
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