glsa-200512-02.xml


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

<glsa id="200512-02">
  <title>Webmin, Usermin: Format string vulnerability</title>
  <synopsis>
    Webmin and Usermin are vulnerable to a format string vulnerability which
    may lead to the execution of arbitrary code.
  </synopsis>
  <product type="ebuild">webmin usermin</product>
  <announced>December 07, 2005</announced>
  <revised>December 07, 2005: 01</revised>
  <bug>113888</bug>
  <access>remote</access>
  <affected>
    <package name="app-admin/webmin" auto="yes" arch="*">
      <unaffected range="ge">1.250</unaffected>
      <vulnerable range="lt">1.250</vulnerable>
    </package>
    <package name="app-admin/usermin" auto="yes" arch="*">
      <unaffected range="ge">1.180</unaffected>
      <vulnerable range="lt">1.180</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Webmin is a web-based interface for Unix-like systems. Usermin is
    a simplified version of Webmin designed for use by normal users rather
    than system administrators.
    </p>
  </background>
  <description>
    <p>
    Jack Louis discovered that the Webmin and Usermin "miniserv.pl"
    web server component is vulnerable to a Perl format string
    vulnerability. Login with the supplied username is logged via the Perl
    "syslog" facility in an unsafe manner.
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker can trigger this vulnerability via a specially
    crafted username containing format string data. This can be exploited
    to consume a large amount of CPU and memory resources on a vulnerable
    system, and possibly to execute arbitrary code of the attacker's choice
    with the permissions of the user running Webmin.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Webmin users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=app-admin/webmin-1.250&quot;</code>
    <p>
    All Usermin users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=app-admin/usermin-1.180&quot;</code>
  </resolution>
  <references>
    <uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3912">CVE-2005-3912</uri>
    <uri link="http://www.dyadsecurity.com/webmin-0001.html">Dyad Security Advisory</uri>
  </references>
  <metadata tag="requester" timestamp="Thu, 01 Dec 2005 16:39:12 +0000">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 04 Dec 2005 19:02:00 +0000">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="Mon, 05 Dec 2005 03:16:21 +0000">
    adir
  </metadata>
</glsa>