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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsaid="201903-05">
<title>Tar: Denial of Service</title>
<synopsis>A vulnerability in Tar could led to a Denial of Service condition.</synopsis>
<producttype="ebuild">tar</product>
<announced>2019-03-10</announced>
<revisedcount="1">2019-03-10</revised>
<bug>674210</bug>
<access>local</access>
<affected>
<packagename="app-arch/tar"auto="yes"arch="*">
<unaffectedrange="ge">1.30-r1</unaffected>
<vulnerablerange="lt">1.30-r1</vulnerable>
</package>
</affected>
<background>
<p>The Tar program provides the ability to create and manipulate tar
archives.
</p>
</background>
<description>
<p>The sparse_dump_region function in sparse.c file in Tar allows an
infinite loop using the --sparse option.
</p>
</description>
<impacttype="normal">
<p>A local attacker could cause a Denial of Service condition by modifying
a file that is supposed to be archived by a different user’s process
(e.g., a system backup running as root).
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All Tar users should upgrade to the latest version:</p>