glsa-202003-62.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202003-62">
  <title>GNU Screen: Buffer overflow</title>
  <synopsis>A buffer overflow in GNU Screen might allow remote attackers to
    corrupt memory.
  </synopsis>
  <product type="ebuild">screen</product>
  <announced>2020-03-30</announced>
  <revised count="1">2020-03-30</revised>
  <bug>708460</bug>
  <access>remote</access>
  <affected>
    <package name="app-misc/screen" auto="yes" arch="*">
      <unaffected range="ge">4.8.0</unaffected>
      <vulnerable range="lt">4.8.0</vulnerable>
    </package>
  </affected>
  <background>
    <p>GNU Screen is a full-screen window manager that multiplexes a physical
      terminal between several processes, typically interactive shells.
    </p>
  </background>
  <description>
    <p>A buffer overflow was found in the way GNU Screen treated the special
      escape OSC 49.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker, by writing a specially crafted string of characters
      to a GNU Screen window, could possibly corrupt memory or have other
      unspecified impact.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All GNU Screen users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-misc/screen-4.8.0"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-9366">CVE-2020-9366</uri>
  </references>
  <metadata tag="requester" timestamp="2020-03-30T05:50:23Z">BlueKnight</metadata>
  <metadata tag="submitter" timestamp="2020-03-30T14:41:12Z">whissi</metadata>
</glsa>