glsa-200404-18.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200404-18">
  <title>Multiple Vulnerabilities in ssmtp</title>
  <synopsis>
    There are multiple format string vulnerabilities in the SSMTP package,
    which may allow an attacker to run arbitrary code with ssmtp's privileges
    (potentially root).
  </synopsis>
  <product type="ebuild">ssmtp</product>
  <announced>2004-04-26</announced>
  <revised count="01">2004-04-26</revised>
  <bug>47918</bug>
  <bug>48435</bug>
  <access>remote root </access>
  <affected>
    <package name="mail-mta/ssmtp" auto="yes" arch="*">
      <unaffected range="ge">2.60.7</unaffected>
      <vulnerable range="le">2.60.4-r2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    SSMTP is a very simple mail transfer agent (MTA) that relays mail from the
    local machine to another SMTP host. It is not designed to function as a
    full mail server; its sole purpose is to relay mail.
    </p>
  </background>
  <description>
    <p>
    There are two format string vulnerabilities inside the log_event() and
    die() functions of ssmtp. Strings from outside ssmtp are passed to various
    printf()-like functions from within log_event() and die() as format
    strings. An attacker could cause a specially-crafted string to be passed to
    these functions, and potentially cause ssmtp to execute arbitrary code.
    </p>
  </description>
  <impact type="high">
    <p>
    If ssmtp connects to a malicious mail relay server, this vulnerability can
    be used to execute code with the rights of the mail sender, including root.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time. All users are advised to upgrade
    to the latest available version of ssmtp.
    </p>
  </workaround>
  <resolution>
    <p>
    All users are advised to upgrade to the latest available version of ssmtp.
    </p>
    <code>
    # emerge sync

    # emerge -pv "&gt;=mail-mta/ssmtp-2.60.7"
    # emerge "&gt;=mail-mta/ssmtp-2.60.7"</code>
  </resolution>
  <references>
    <uri link="https://secunia.com/advisories/11378/">Secunia Advisory</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0156">CVE Reference</uri>
    <uri link="https://lists.debian.org/debian-security-announce/debian-security-announce-2004/msg00084.html">Debian Advisory</uri>
  </references>
  <metadata tag="submitter">
    condordes
  </metadata>
</glsa>