<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="202009-02"> <title>Dovecot: Multiple vulnerabilities</title> <synopsis>Multiple vulnerabilities have been found in Dovecot, the worst of which could allow remote attackers to cause a Denial of Service condition. </synopsis> <product type="ebuild">dovecot</product> <announced>2020-09-06</announced> <revised count="1">2020-09-06</revised> <bug>736617</bug> <access>remote</access> <affected> <package name="net-mail/dovecot" auto="yes" arch="*"> <unaffected range="ge">2.3.11.3</unaffected> <vulnerable range="lt">2.3.11.3</vulnerable> </package> </affected> <background> <p>Dovecot is an open source IMAP and POP3 email server.</p> </background> <description> <p>It was discovered that Dovecot incorrectly handled deeply nested MIME parts, incorrectly handled memory when using NTLM, and incorrectly handled zero-length messages. </p> </description> <impact type="normal"> <p>A remote attacker could send a specially crafted mail or send specially crafted authentication requests possibly resulting in a Denial of Service condition. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All Dovecot users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/dovecot-2.3.11.3" </code> </resolution> <references> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-12100">CVE-2020-12100</uri> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-12673">CVE-2020-12673</uri> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-12674">CVE-2020-12674</uri> </references> <metadata tag="requester" timestamp="2020-09-06T00:07:17Z">whissi</metadata> <metadata tag="submitter" timestamp="2020-09-06T00:20:00Z">whissi</metadata> </glsa>