<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202012-12">
  <title>libass: User-assisted execution of arbitrary code</title>
  <synopsis>A vulnerability has been found in libass that could allow a remote
    attacker to execute arbitrary code.
  </synopsis>
  <product type="ebuild">libass</product>
  <announced>2020-12-23</announced>
  <revised count="1">2020-12-23</revised>
  <bug>746413</bug>
  <access>local, remote</access>
  <affected>
    <package name="media-libs/libass" auto="yes" arch="*">
      <unaffected range="ge">0.15.0</unaffected>
      <vulnerable range="lt">0.15.0</vulnerable>
    </package>
  </affected>
  <background>
    <p>libass is a portable subtitle renderer for the ASS/SSA (Advanced
      Substation Alpha/Substation Alpha) subtitle format.
    </p>
  </background>
  <description>
    <p>It was discovered that libass did not properly handle Advanced
      Substation Alpha/Substation Alpha subtitle format files.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could entice a user to process an a specially crafted
      subtitle format file using an application linked against libass, possibly
      resulting in execution of arbitrary code with the privileges of the
      process or a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All libass users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=media-libs/libass-0.15.0"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-26682">CVE-2020-26682</uri>
  </references>
  <metadata tag="requester" timestamp="2020-12-22T22:35:27Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2020-12-23T19:52:17Z">whissi</metadata>
</glsa>