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<?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 ">=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>
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