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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201709-19">
<title>Exim: Local privilege escalation</title>
<synopsis>A vulnerability in Exim may allow local users to gain root
privileges.
</synopsis>
<product type="ebuild">exim</product>
<announced>2017-09-24</announced>
<revised>2017-09-24: 1</revised>
<bug>622212</bug>
<access>local</access>
<affected>
<package name="mail-mta/exim" auto="yes" arch="*">
<unaffected range="ge">4.89-r1</unaffected>
<vulnerable range="lt">4.89-r1</vulnerable>
</package>
</affected>
<background>
<p>Exim is a message transfer agent (MTA) developed at the University of
Cambridge for use on Unix systems connected to the Internet.
</p>
</background>
<description>
<p>Exim supports the use of multiple “-p” command line arguments
causing a memory leak. This could lead to a stack-clash in user-space and
as result the attacker can, “clash” or “smash” the stack or
another memory region, or “jump” over the stack guard-page.
</p>
</description>
<impact type="normal">
<p>A local attacker could obtain root privileges.</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All Exim users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.89-r1"
</code>
</resolution>
<references>
<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-1000369">
CVE-2017-1000369
</uri>
</references>
<metadata tag="requester" timestamp="2017-09-19T01:45:18Z">chrisadr</metadata>
<metadata tag="submitter" timestamp="2017-09-24T15:49:28Z">chrisadr</metadata>
</glsa>
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