glsa-202105-09.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-09">
  <title>BusyBox: Denial of service</title>
  <synopsis>A vulnerability in BusyBox might allow remote attackers to cause a
    Denial of Service condition.
  </synopsis>
  <product type="ebuild">busybox</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>777255</bug>
  <access>local, remote</access>
  <affected>
    <package name="sys-apps/busybox" auto="yes" arch="*">
      <unaffected range="ge">1.32.1</unaffected>
      <vulnerable range="lt">1.32.1</vulnerable>
    </package>
  </affected>
  <background>
    <p>BusyBox is a set of tools for embedded systems and is a replacement for
      GNU Coreutils.
    </p>
  </background>
  <description>
    <p>It was discovered that BusyBox mishandled the error bit on the
      huft_build result pointer when decompressing GZIP compressed data.
    </p>
  </description>
  <impact type="low">
    <p>A remote attacker could entice a user to open a specially crafted GZIP
      file using BusyBox, possibly resulting in a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All BusyBox users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-apps/busybox-1.32.1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-28831">CVE-2021-28831</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-24T01:11:14Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T08:14:24Z">whissi</metadata>
</glsa>