<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201910-01">
  <title>PHP: Arbitrary code execution</title>
  <synopsis>A vulnerability in PHP might allow an attacker to execute arbitrary
    code.
  </synopsis>
  <product type="ebuild">php</product>
  <announced>2019-10-25</announced>
  <revised count="2">2019-11-19</revised>
  <bug>698452</bug>
  <access>remote</access>
  <affected>
    <package name="dev-lang/php" auto="yes" arch="*">
      <unaffected range="ge">7.1.33</unaffected>
      <unaffected range="ge">7.2.24</unaffected>
      <unaffected range="ge">7.3.11</unaffected>
      <unaffected range="ge">5.6.40-r7</unaffected>
      <vulnerable range="lt">7.1.33</vulnerable>
      <vulnerable range="lt">7.2.24</vulnerable>
      <vulnerable range="lt">7.3.11</vulnerable>
      <vulnerable range="lt">5.6.40-r7</vulnerable>
    </package>
  </affected>
  <background>
    <p>PHP is an open source general-purpose scripting language that is
      especially suited for web development.
    </p>
  </background>
  <description>
    <p>A underflow in env_path_info in PHP-FPM under certain configurations can
      be exploited to gain remote code execution.
    </p>
  </description>
  <impact type="high">
    <p>A remote attacker, by sending special crafted HTTP requests, could
      possibly execute arbitrary code with the privileges of the process, or
      cause a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>If patching is not feasible, the suggested workaround is to include
      checks to verify whether or not a file exists before passing to PHP.
    </p>
  </workaround>
  <resolution>
    <p>All PHP 5.6 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=dev-lang/php-5.6.40-r7"
    </code>
    
    <p>All PHP 7.1 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=dev-lang/php-7.1.33"
    </code>
    
    <p>All PHP 7.2 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=dev-lang/php-7.2.24"
    </code>
    
    <p>All PHP 7.3 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=dev-lang/php-7.3.11"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-11043">CVE-2019-11043</uri>
  </references>
  <metadata tag="requester" timestamp="2019-10-24T23:39:18Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2019-11-19T10:48:24Z">whissi</metadata>
</glsa>
