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<?xml version="1.0" encoding="UTF-8"?>
<glsa id="201111-06">
<title>MaraDNS: Arbitrary code execution</title>
<synopsis>A buffer overflow vulnerability in MaraDNS allows remote attackers
to execute arbitrary code or cause a Denial of Service.
<product type="ebuild">MaraDNS</product>
<announced>November 20, 2011</announced>
<revised>November 20, 2011: 1</revised>
<package name="net-dns/maradns" auto="yes" arch="*">
<unaffected range="ge">1.4.06</unaffected>
<vulnerable range="lt">1.4.06</vulnerable>
<p>MaraDNS is a proxy DNS server with permanent caching.</p>
<p>A long DNS hostname with a large number of labels could trigger a buffer
overflow in the compress_add_dlabel_points() function of dns/Compress.c.
<impact type="high">
<p>A remote unauthenticated attacker could execute arbitrary code or cause
a Denial of Service.
<p>There is no known workaround at this time.</p>
<p>All MaraDNS users should upgrade to the latest stable version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=net-dns/maradns-1.4.06"
<p>NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since February 12, 2011. It is likely that your system is
already no longer affected by this issue.
<uri link="">CVE-2011-0520</uri>
<metadata timestamp="Fri, 07 Oct 2011 23:37:03 +0000" tag="requester">
<metadata timestamp="Sun, 20 Nov 2011 17:56:41 +0000" tag="submitter">ackle</metadata>