glsa-201404-07.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201404-07">
  <title>OpenSSL: Information Disclosure</title>
  <synopsis>Multiple Information Disclosure vulnerabilities in OpenSSL allow
    remote attackers to obtain sensitive information via various vectors.
  </synopsis>
  <product type="ebuild">openssl</product>
  <announced>2014-04-08</announced>
  <revised count="4">2015-06-06</revised>
  <bug>505278</bug>
  <bug>507074</bug>
  <access>remote</access>
  <affected>
    <package name="dev-libs/openssl" auto="yes" arch="*">
      <unaffected range="ge">1.0.1g</unaffected>
      <unaffected range="rge">0.9.8y</unaffected>
      <unaffected range="rge">0.9.8z_p1</unaffected>
      <unaffected range="rge">0.9.8z_p2</unaffected>
      <unaffected range="rge">0.9.8z_p3</unaffected>
      <unaffected range="rge">0.9.8z_p4</unaffected>
      <unaffected range="rge">0.9.8z_p5</unaffected>
      <unaffected range="rge">0.9.8z_p6</unaffected>
      <unaffected range="rge">0.9.8z_p7</unaffected>
      <unaffected range="rge">0.9.8z_p8</unaffected>
      <unaffected range="rge">0.9.8z_p9</unaffected>
      <unaffected range="rge">0.9.8z_p10</unaffected>
      <unaffected range="rge">0.9.8z_p11</unaffected>
      <unaffected range="rge">0.9.8z_p12</unaffected>
      <unaffected range="rge">0.9.8z_p13</unaffected>
      <unaffected range="rge">0.9.8z_p14</unaffected>
      <unaffected range="rge">0.9.8z_p15</unaffected>
      <vulnerable range="lt">1.0.1g</vulnerable>
    </package>
  </affected>
  <background>
    <p>OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
      (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
      purpose cryptography library.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been found in OpenSSL:</p>
    
    <ul>
      <li>OpenSSL incorrectly handles memory in the TLS heartbeat extension,
        leading to information disclosure of 64kb per request, possibly
        including private keys (“Heartbleed bug”, OpenSSL 1.0.1 only,
        CVE-2014-0160).
      </li>
      <li>The Montgomery ladder implementation of OpenSSL improperly handles
        swap operations (CVE-2014-0076).
      </li>
    </ul>
  </description>
  <impact type="normal">
    <p>A remote attacker could exploit these issues to disclose information,
      including private keys or other sensitive information, or perform
      side-channel attacks to obtain ECDSA nonces.
    </p>
  </impact>
  <workaround>
    <p>Disabling the tls-heartbeat USE flag (enabled by default) provides a
      workaround for the CVE-2014-0160 issue.
    </p>
  </workaround>
  <resolution>
    <p>All OpenSSL users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=dev-libs/openssl-1.0.1g"
    </code>
    
    <p>Note: All services using OpenSSL to provide TLS connections have to be
      restarted for the update to take effect. Utilities like
      app-admin/lib_users can aid in identifying programs using OpenSSL.
    </p>
    
    <p>As private keys may have been compromised using the Heartbleed attack,
      it is recommended to regenerate them.
    </p>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0076">CVE-2014-0076</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0160">CVE-2014-0160</uri>
    <uri link="http://heartbleed.com/">Heartbleed bug website</uri>
  </references>
  <metadata tag="requester" timestamp="2014-04-08T09:37:45Z">a3li</metadata>
  <metadata tag="submitter" timestamp="2015-06-06T23:11:05Z">a3li</metadata>
</glsa>