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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200606-19">
+ <title>Sendmail: Denial of service</title>
+ <synopsis>
+ Faulty multipart MIME messages can cause forked Sendmail processes to
+ crash.
+ </synopsis>
+ <product type="ebuild">sendmail</product>
+ <announced>2006-06-15</announced>
+ <revised count="01">2006-06-15</revised>
+ <bug>135141</bug>
+ <access>remote</access>
+ <affected>
+ <package name="mail-mta/sendmail" auto="yes" arch="*">
+ <unaffected range="ge">8.13.6-r1</unaffected>
+ <vulnerable range="lt">8.13.6-r1</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ Sendmail is a popular mail transfer agent (MTA).
+ </p>
+ </background>
+ <description>
+ <p>
+ Frank Sheiness discovered that the mime8to7() function can recurse
+ endlessly during the decoding of multipart MIME messages until the
+ stack of the process is filled and the process crashes.
+ </p>
+ </description>
+ <impact type="normal">
+ <p>
+ By sending specially crafted multipart MIME messages, a remote
+ attacker can cause a subprocess forked by Sendmail to crash. If
+ Sendmail is not set to use a randomized queue processing, the attack
+ will effectively halt the delivery of queued mails as well as the
+ malformed one, incoming mail delivered interactively is not affected.
+ Additionally, on systems where core dumps with an individual naming
+ scheme (like "core.pid") are enabled, a filesystem may fill up with
+ core dumps. Core dumps are disabled by default in Gentoo.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ The Sendmail 8.13.7 release information offers some workarounds, please
+ see the Reference below. Note that the issue has actually been fixed in
+ the 8.13.6-r1 ebuild.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All Sendmail users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose "&gt;=mail-mta/sendmail-8.13.6-r1"</code>
+ </resolution>
+ <references>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1173">CVE-2006-1173</uri>
+ <uri link="http://www.sendmail.org/releases/8.13.7.html">Sendmail 8.13.7 release information</uri>
+ </references>
+ <metadata tag="requester" timestamp="2006-06-14T18:47:59Z">
+ jaervosz
+ </metadata>
+ <metadata tag="submitter" timestamp="2006-06-14T19:21:03Z">
+ frilled
+ </metadata>
+ <metadata tag="bugReady" timestamp="2006-06-15T16:00:46Z">
+ jaervosz
+ </metadata>
+</glsa>