glsa-200508-02.xml


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

<glsa id="200508-02">
  <title>ProFTPD: Format string vulnerabilities</title>
  <synopsis>
    Under specific circumstances, ProFTPD is vulnerable to format string
    vulnerabilities, potentially resulting in the execution of arbitrary code.
  </synopsis>
  <product type="ebuild">proftpd</product>
  <announced>August 01, 2005</announced>
  <revised>August 01, 2005: 01</revised>
  <bug>100364</bug>
  <access>remote</access>
  <affected>
    <package name="net-ftp/proftpd" auto="yes" arch="*">
      <unaffected range="ge">1.2.10-r7</unaffected>
      <vulnerable range="lt">1.2.10-r7</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ProFTPD is a configurable GPL-licensed FTP server software.
    </p>
  </background>
  <description>
    <p> "infamous42md" reported that ProFTPD is vulnerable to format
    string vulnerabilities when displaying a shutdown message containing
    the name of the current directory, and when displaying response
    messages to the client using information retrieved from a database
    using mod_sql.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could create a directory with a malicious name
    that would trigger the format string issue if specific variables are
    used in the shutdown message, potentially resulting in a Denial of
    Service or the execution of arbitrary code with the rights of the user
    running the ProFTPD server. An attacker with control over the database
    contents could achieve the same result by introducing malicious
    messages that would trigger the other format string issue when used in
    server responses.
    </p>
  </impact>
  <workaround>
    <p>
    Do not use the "%C", "%R", or "%U" in shutdown messages, and do
    not set the "SQLShowInfo" directive.
    </p>
  </workaround>
  <resolution>
    <p>
    All ProFTPD users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=net-ftp/proftpd-1.2.10-r7&quot;</code>
  </resolution>
  <references>
    <uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2390">CAN-2005-2390</uri>
  </references>
  <metadata tag="requester" timestamp="Wed, 27 Jul 2005 14:13:46 +0000">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="Sat, 30 Jul 2005 00:11:05 +0000">
    adir
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 31 Jul 2005 14:18:50 +0000">
    DerCorny
  </metadata>
</glsa>