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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="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 ">=app-admin/webmin-1.250"</code>
<p>
All Usermin users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/usermin-1.180"</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>
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