<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202104-05">
  <title>GRUB: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities have been found in GRUB, the worst might
    allow for circumvention of UEFI Secure Boot.
  </synopsis>
  <product type="ebuild">grub</product>
  <announced>2021-04-30</announced>
  <revised count="1">2021-04-30</revised>
  <bug>734654</bug>
  <bug>773991</bug>
  <access>local</access>
  <affected>
    <package name="sys-devel/grub" auto="yes" arch="*">
      <unaffected range="ge">2.06_rc1</unaffected>
      <vulnerable range="lt">2.06_rc1</vulnerable>
    </package>
  </affected>
  <background>
    <p>GNU GRUB is a multiboot boot loader used by most Linux systems.</p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been discovered in GRUB. Please review the
      CVE identifiers referenced below for details.
    </p>
  </description>
  <impact type="normal">
    <p>Please review the referenced CVE identifiers for details.</p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All GRUB users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-devel/grub-2.06_rc1"
    </code>
    
    <p>After upgrading, make sure to run the grub-install command with options
      appropriate for your system. See the GRUB Quick Start guide in the
      references below for examples. Your system will be vulnerable until this
      action is performed.
    </p>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-10713">CVE-2020-10713</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14308">CVE-2020-14308</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14309">CVE-2020-14309</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14310">CVE-2020-14310</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14311">CVE-2020-14311</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-14372">CVE-2020-14372</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-15705">CVE-2020-15705</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-15706">CVE-2020-15706</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-15707">CVE-2020-15707</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25632">CVE-2020-25632</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25647">CVE-2020-25647</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-27749">CVE-2020-27749</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-27779">CVE-2020-27779</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-20225">CVE-2021-20225</uri>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-20233">CVE-2021-20233</uri>
    <uri link="https://wiki.gentoo.org/wiki/GRUB2_Quick_Start">GRUB Quick Start
      guide 
    </uri>
  </references>
  <metadata tag="requester" timestamp="2021-04-30T23:17:40Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-04-30T23:45:51Z">whissi</metadata>
</glsa>
