glsa-201709-07.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201709-07">
  <title>Kpathsea: User-assisted execution of arbitrary code</title>
  <synopsis>A vulnerability in Kpathsea allows remote attackers to execute
    arbitrary commands by manipulating the -tex option from mpost program.
  </synopsis>
  <product type="ebuild">kpathsea</product>
  <announced>2017-09-17</announced>
  <revised>2017-09-17: 1</revised>
  <bug>612328</bug>
  <access>remote</access>
  <affected>
    <package name="dev-libs/kpathsea" auto="yes" arch="*">
      <unaffected range="ge">6.2.2_p20160523</unaffected>
      <vulnerable range="lt">6.2.2_p20160523</vulnerable>
    </package>
  </affected>
  <background>
    <p>Kpathsea is a library to do path searching. It is used by TeX Live and
      others TeX related software.
    </p>
  </background>
  <description>
    <p>It was discovered that the mpost program from the shell_escape_commands
      list is capable of executing arbitrary external programs during the
      conversion of .tex files. The responsible function is runpopen()
      (texmfmp.c).
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker, by enticing a user to open a specially crafted .tex
      file, could possibly execute arbitrary code with the privileges of the
      process.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Kpathsea users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose
      "&gt;=dev-libs/kpathsea-6.2.2_p20160523"
    </code>
    
    <p>Packages which depend on this library may need to be recompiled. Tools
      such as revdep-rebuild may assist in identifying some of these packages.
    </p>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10243">
      CVE-2016-10243
    </uri>
  </references>
  <metadata tag="requester" timestamp="2017-06-17T20:59:54Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2017-09-17T15:47:02Z">chrisadr</metadata>
</glsa>