glsa-202105-34.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-34">
  <title>Bash: Privilege escalation</title>
  <synopsis>A vulnerability in Bash may allow users to escalate privileges.</synopsis>
  <product type="ebuild">bash</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>702488</bug>
  <access>local</access>
  <affected>
    <package name="app-shells/bash" auto="yes" arch="*">
      <unaffected range="ge">5.0_p11-r1</unaffected>
      <vulnerable range="lt">5.0_p11-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>Bash is the standard GNU Bourne Again SHell.</p>
  </background>
  <description>
    <p>It was discovered that Bash incorrectly dropped privileges by setting
      its effective UID to its real UID.
    </p>
  </description>
  <impact type="normal">
    <p>A local attacker could possibly escalate privileges.</p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Bash users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-shells/bash-5.0_p11-r1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-18276">CVE-2019-18276</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-25T19:22:45Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T10:13:27Z">whissi</metadata>
</glsa>