glsa-200701-28.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200701-28">
  <title>thttpd: Unauthenticated remote file access</title>
  <synopsis>
    The default configuration of the Gentoo thttpd package potentially allows
    unauthenticated access to system files when used with newer versions of
    baselayout.
  </synopsis>
  <product type="ebuild">thttpd</product>
  <announced>2007-01-31</announced>
  <revised count="02">2007-03-11</revised>
  <bug>142047</bug>
  <access>remote</access>
  <affected>
    <package name="www-servers/thttpd" auto="yes" arch="*">
      <unaffected range="ge">2.25b-r6</unaffected>
      <vulnerable range="lt">2.25b-r6</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    thttpd is a webserver designed to be simple, small, and fast.
    </p>
  </background>
  <description>
    <p>
    thttpd is vulnerable to an underlying change made to the
    start-stop-daemon command in the current stable Gentoo baselayout
    package (version 1.12.6). In the new version, the start-stop-daemon
    command performs a "chdir /" command just before starting the thttpd
    process. In the Gentoo default configuration, this causes thttpd to
    start with the document root set to "/", the sytem root directory.
    </p>
  </description>
  <impact type="low">
    <p>
    When thttpd starts with the document root set to the system root
    directory, all files on the system that are readable by the thttpd
    process can be remotely accessed by unauthenticated users.
    </p>
  </impact>
  <workaround>
    <p>
    Alter the THTTPD_OPTS variable in /etc/conf.d/thttpd to include the
    "-d" option to specify the document root. Alternatively, modify the
    THTTPD_OPTS variable in /etc/conf.d/thttpd to specify a thttpd.conf
    file using the "-C" option, and then configure the "dir=" directive in
    that thttpd.conf file.
    </p>
  </workaround>
  <resolution>
    <p>
    All thttpd users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=www-servers/thttpd-2.25b-r5"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0664">CVE-2007-0664</uri>
  </references>
  <metadata tag="requester" timestamp="2007-01-26T12:41:44Z">
    shellsage
  </metadata>
  <metadata tag="submitter" timestamp="2007-01-27T17:49:26Z">
    aetius
  </metadata>
  <metadata tag="bugReady" timestamp="2007-01-31T21:45:13Z">
    falco
  </metadata>
</glsa>