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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201401-23">
<title>sudo: Privilege escalation</title>
<synopsis>Multiple vulnerabilities have been found in sudo which could result
in privilege escalation.
</synopsis>
<product type="ebuild">sudo</product>
<announced>January 21, 2014</announced>
<revised>January 21, 2014: 1</revised>
<bug>459722</bug>
<access>local</access>
<affected>
<package name="app-admin/sudo" auto="yes" arch="*">
<unaffected range="ge">1.8.6_p7</unaffected>
<vulnerable range="lt">1.8.6_p7</vulnerable>
</package>
</affected>
<background>
<p>sudo allows a system administrator to give users the ability to run
commands as other users. Access to commands may also be granted on a
range to hosts.
</p>
</background>
<description>
<p>Multiple vulnerabilities have been found in sudo:</p>
<ul>
<li>sudo does not correctly validate the controlling terminal on a system
without /proc or when the tty_tickets option is enabled.
</li>
<li>sudo does not properly handle the clock when it is set to the epoch.</li>
</ul>
</description>
<impact type="high">
<p>A local attacker with sudo privileges could connect to the stdin,
stdout, and stderr of the terminal of a user who has authenticated with
sudo, allowing the attacker to hijack the authorization of the other
user. Additionally, a local or physically proximate attacker could set
the system clock to the epoch, bypassing time restrictions on sudo
authentication.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All sudo users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=app-admin/sudo-1.8.6_p7"
</code>
</resolution>
<references>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1775">CVE-2013-1775</uri>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1776">CVE-2013-1776</uri>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2776">CVE-2013-2776</uri>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2777">CVE-2013-2777</uri>
</references>
<metadata tag="requester" timestamp="Fri, 03 Jan 2014 14:24:36 +0000">ackle</metadata>
<metadata tag="submitter" timestamp="Tue, 21 Jan 2014 20:25:34 +0000">
creffett
</metadata>
</glsa>