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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201701-11">
  <title>musl: Integer overflow</title>
  <synopsis>An integer overflow in musl might allow an attacker to execute
    arbitrary code.
  </synopsis>
  <product type="ebuild">musl</product>
  <announced>2017-01-02</announced>
  <revised>2017-01-02: 1</revised>
  <bug>597498</bug>
  <access>local, remote</access>
  <affected>
    <package name="sys-libs/musl" auto="yes" arch="*">
      <unaffected range="ge">1.1.15-r2</unaffected>
      <vulnerable range="lt">1.1.15-r2</vulnerable>
    </package>
  </affected>
  <background>
    <p>musl is a “libc”, an implementation of the standard library
      functionality described in the ISO C and POSIX standards, plus common
      extensions, intended for use on Linux-based systems.
    </p>
  </background>
  <description>
    <p>A vulnerability was discovered in musl’s tre_tnfa_run_parallel
      function buffer overflow logic, due to the incorrect use of integer types
      and missing overflow checks.
    </p>
  </description>
  <impact type="normal">
    <p>An attacker, who controls the regular expression and/or string being
      searched, could 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 musl users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-libs/musl-1.1.15-r2"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-8859">CVE-2016-8859</uri>
  </references>
  <metadata tag="requester" timestamp="2017-01-02T07:23:08Z">b-man</metadata>
  <metadata tag="submitter" timestamp="2017-01-02T14:34:33Z">b-man</metadata>
</glsa>