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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202003-44">
<title>Binary diff: Heap-based buffer overflow</title>
<synopsis>A heap-based buffer overflow in Binary diff might allow remote
attackers to execute arbitrary code.
</synopsis>
<product type="ebuild">bsdiff</product>
<announced>2020-03-19</announced>
<revised count="1">2020-03-19</revised>
<bug>701848</bug>
<access>local, remote</access>
<affected>
<package name="dev-util/bsdiff" auto="yes" arch="*">
<unaffected range="ge">4.3-r4</unaffected>
<vulnerable range="lt">4.3-r4</vulnerable>
</package>
</affected>
<background>
<p>bsdiff and bspatch are tools for building and applying patches to binary
files.
</p>
</background>
<description>
<p>It was discovered that the implementation of bspatch did not check for a
negative value on numbers of bytes read from the diff and extra streams.
</p>
</description>
<impact type="high">
<p>A remote attacker could entice a user to apply a specially crafted patch
using bspatch, 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 Binary diff users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-util/bsdiff-4.3-r4"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2014-9862">CVE-2014-9862</uri>
</references>
<metadata tag="requester" timestamp="2020-03-19T18:34:43Z">whissi</metadata>
<metadata tag="submitter" timestamp="2020-03-19T18:40:24Z">whissi</metadata>
</glsa>
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