glsa-202105-19.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-19">
  <title>Firejail: Privilege escalation</title>
  <synopsis>A vulnerability was discovered in Firejail which may allow local
    attackers to gain root privileges.
  </synopsis>
  <product type="ebuild">firejail</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>769542</bug>
  <access>local</access>
  <affected>
    <package name="sys-apps/firejail" auto="yes" arch="*">
      <unaffected range="ge">0.9.64.4</unaffected>
      <vulnerable range="lt">0.9.64.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>A SUID program that reduces the risk of security breaches by restricting
      the running environment of untrusted applications using Linux namespaces
      and seccomp-bpf.
    </p>
  </background>
  <description>
    <p>It was discovered that a flaw in Firejail’s OverlayFS code allowed
      restricted programs to escape sandbox.
    </p>
  </description>
  <impact type="high">
    <p>A local attacker could obtain arbitrary file system access via an
      application running within a Firejail sandbox, possibly resulting in
      privilege escalation.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Firejail users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-apps/firejail-0.9.64.4"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-26910">CVE-2021-26910</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-25T20:22:19Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T08:38:46Z">whissi</metadata>
</glsa>