<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201611-08">
  <title>libpng: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in libpng, the worst of
    which may allow remote attackers to cause Denial of Service.
  </synopsis>
  <product type="ebuild">libpng</product>
  <announced>2016-11-15</announced>
  <revised count="1">2016-11-15</revised>
  <bug>564244</bug>
  <bug>565678</bug>
  <bug>568216</bug>
  <access>remote</access>
  <affected>
    <package name="media-libs/libpng" auto="yes" arch="*">
      <unaffected range="ge" slot="1.2">1.2.56</unaffected>
      <unaffected range="ge" slot="1.5">1.5.26</unaffected>
      <unaffected range="ge">1.6.21</unaffected>
      <vulnerable range="lt">1.6.21</vulnerable>
    </package>
  </affected>
  <background>
    <p>libpng is a standard library used to process PNG (Portable Network
      Graphics) images. It is used by several other programs, including web
      browsers and potentially server processes.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities were found in libpng. Please review the
      referenced CVE’s for additional information.
    </p>
  </description>
  <impact type="normal">
    <p>Remote attackers could cause a Denial of Service condition or have other
      unspecified impacts.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All libpng 1.2 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=media-libs/libpng-1.2.56"
    </code>
    
    <p>All libpng 1.5 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=media-libs/libpng-1.5.26"
    </code>
    
    <p>All libpng 1.6 users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=media-libs/libpng-1.6.21"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7981">CVE-2015-7981</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8126">CVE-2015-8126</uri>
    <uri link="https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8540">
      CVE-2015-8540
    </uri>
  </references>
  <metadata tag="requester" timestamp="2015-12-23T23:42:59Z">
    BlueKnight
  </metadata>
  <metadata tag="submitter" timestamp="2016-11-15T07:39:40Z">b-man</metadata>
</glsa>
