<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="202011-02"> <title>OpenDMARC: Heap-based buffer overflow</title> <synopsis>A heap-based buffer overflow in OpenDMARC might allow remote attackers to execute arbitrary code. </synopsis> <product type="ebuild">opendmarc</product> <announced>2020-11-03</announced> <revised count="1">2020-11-03</revised> <bug>734158</bug> <access>local, remote</access> <affected> <package name="mail-filter/opendmarc" auto="yes" arch="*"> <unaffected range="ge">1.3.3</unaffected> <vulnerable range="lt">1.3.3</vulnerable> </package> </affected> <background> <p>OpenDMARC is an open source DMARC implementation.</p> </background> <description> <p>It was found that OpenDMARC did not properly handle DMARC aggregate reports. </p> </description> <impact type="normal"> <p>A remote attacker, by sending a specially crafted DMARC aggregate report, could possibly cause a Denial of Service condition and depending on how OpenDMARC library is used in linked application execute arbitrary code with the privileges of the process. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All OpenDMARC users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=mail-filter/opendmarc-1.3.3" </code> </resolution> <references> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-12460">CVE-2020-12460</uri> </references> <metadata tag="requester" timestamp="2020-10-15T18:55:45Z">sam_c</metadata> <metadata tag="submitter" timestamp="2020-11-03T00:33:08Z">sam_c</metadata> </glsa>