glsa-200701-13.xml


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<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">

<glsa id="200701-13">
  <title>Fetchmail: Denial of Service and password disclosure</title>
  <synopsis>
    Fetchmail has been found to have numerous vulnerabilities allowing for
    Denial of Service and password disclosure.
  </synopsis>
  <product type="ebuild">fetchmail</product>
  <announced>January 22, 2007</announced>
  <revised>January 22, 2007: 01</revised>
  <bug>160463</bug>
  <access>remote</access>
  <affected>
    <package name="net-mail/fetchmail" auto="yes" arch="*">
      <unaffected range="ge">6.3.6</unaffected>
      <vulnerable range="lt">6.3.6</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Fetchmail is a remote mail retrieval and forwarding utility.
    </p>
  </background>
  <description>
    <p>
    Neil Hoggarth has discovered that when delivering messages to a message
    delivery agent by means of the "mda" option, Fetchmail passes a NULL
    pointer to the ferror() and fflush() functions when refusing a message.
    Isaac Wilcox has discovered numerous means of plain-text password
    disclosure due to errors in secure connection establishment.
    </p>
  </description>
  <impact type="normal">
    <p>
    An attacker could deliver a message via Fetchmail to a message delivery
    agent configured to refuse the message, and crash the Fetchmail
    process. SMTP and LMTP delivery modes are not affected by this
    vulnerability. An attacker could also perform a Man-in-the-Middle
    attack, and obtain plain-text authentication credentials of users
    connecting to a Fetchmail process.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All fetchmail users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-mail/fetchmail-6.3.6&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5867">CVE-2006-5867</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5974">CVE-2006-5974</uri>
  </references>
  <metadata tag="requester" timestamp="Mon, 15 Jan 2007 23:33:39 +0000">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="Tue, 16 Jan 2007 17:08:58 +0000">
    falco
  </metadata>
  <metadata tag="submitter" timestamp="Thu, 18 Jan 2007 02:05:45 +0000">
    shellsage
  </metadata>
</glsa>