S-00-06.htm
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<title>CERT-NL S-00-06</title>
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<p><font face="Arial"><strong><big>Security Advisory</big></strong></font></p>
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<td align="center" bgcolor="#009966" colspan="2" width="95"><strong><font face="Arial">CERT-NL</font></strong></td>
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<td width="115" bgcolor="#99CC99">Author/Source</td>
<td width="6" bgcolor="#99CC99">:</td>
<td width="100%">Xander Jansen</td>
<td width="96" bgcolor="#99CC99">Index</td>
<td colspan="2" width="6" bgcolor="#99CC99">:</td>
<td align="right" width="90">S-00-06</td>
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<td width="115" bgcolor="#99CC99">Distribution</td>
<td width="6" bgcolor="#99CC99">:</td>
<td width="627">World</td>
<td width="96" bgcolor="#99CC99">Page</td>
<td colspan="2" width="6" bgcolor="#99CC99">:</td>
<td align="right" width="90">1</td>
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<td width="115" bgcolor="#99CC99">Classification</td>
<td width="6" bgcolor="#99CC99">:</td>
<td width="627">External</td>
<td width="96" bgcolor="#99CC99">Version</td>
<td colspan="2" width="6" bgcolor="#99CC99">:</td>
<td align="right" width="90">1</td>
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<td width="115" bgcolor="#99CC99" valign="top">Subject</td>
<td width="6" bgcolor="#99CC99" valign="top"><big><strong>:</strong></big></td>
<td width="627" bgcolor="#d4d4d4"><big><strong>Malicious HTML Tags Embedded in Client Web
Requests</strong></big></td>
<td width="96" bgcolor="#99CC99" valign="top">Date</td>
<td colspan="2" width="6" bgcolor="#99CC99" valign="top">:</td>
<td align="right" width="90" bgcolor="#D4D4D4" valign="top">05-Feb-2000</td>
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<p>By courtesy of CERT Coordination Center we received the following information.</p>
<p>CERT Coordination Center advisory CA-2000-02 contains extensive information on
the problem of malicious HTML tags and script code which could affect both Web browsers
and Web servers. The advisory explains in detail the potential problems and dangers with
dynamically generated HTML and common scripting languages like Javascript and Java. The
advisory offers guidelines for end-users, web page developers and web site administrators
(including pointers to FAQ-pages, design tips and vendor patches) to minimise or prevent
the risks involved.</p>
<p>The full text of the regularly updated advisory is available at:</p>
<blockquote>
<p><a href="http://www.cert.org/advisories/CA-2000-02.html">http://www.cert.org/advisories/CA-2000-02.html</a></p>
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<p>CERT-NL recommends to carefully read the advisory and to follow the recommendations in
the advisory where appropriate.<font FACE="Courier New" SIZE="2"></p>
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<p><font color="#006041"><strong>CERT-NL</strong> </font>is the Computer Emergency
Response Team for SURFnet customers. SURFnet is the Dutch network for educational,
research and related institutes. <strong><font color="#006041">CERT-NL</font></strong> is
a member of the Forum of Incident Response and Security Teams (<a href="http://www.first.org">FIRST</a>).</p>
<p>All <strong><font color="#006041">CERT-NL</font></strong> material is available under:<br>
<a href="http://cert.surfnet.nl/">http://cert.surfnet.nl/</a></p>
<p>In case of computer or network security problems please contact your local
CERT/security-team or<font color="#006041"> <strong>CERT-NL</strong></font> (if your
institute is NOT a SURFnet customer please address the appropriate (local)
CERT/security-team).</p>
<p><strong><font color="#006041">CERT-NL</font></strong> is one/two hour(s) ahead of UTC
(GMT) in winter/summer,<br>
i.e. UTC+0100 in winter and UTC+0200 in summer (DST).</p>
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<td valign="top" height="24">Email:</td>
<td height="24"><a href="mailto:cert-nl@surfnet.nl">cert-nl@surfnet.nl</a></td>
<td height="24">ATTENDED REGULARLY ALL DAYS</td>
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<td valign="top" height="24">Phone:</td>
<td height="24">+31 302 305 305</td>
<td height="24">BUSINESS HOURS ONLY</td>
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<td valign="top" height="24">Fax: </td>
<td height="24">+31 302 305 329 </td>
<td height="24">BUSINESS HOURS ONLY</td>
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<td valign="top" height="112">Snailmail:</td>
<td height="112">SURFnet bv<br>
Attn. CERT-NL<br>
P.O. Box 19035<br>
NL - 3501 DA UTRECHT<br>
The Netherlands</td>
<td height="112">.</td>
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<p>NOODGEVALLEN: 06 22 92 35 64 ALTIJD
BEREIKBAAR<br>
EMERGENCIES : +31 6 22 92 35 64 ATTENDED AT ALL TIMES<br>
CERT-NL'S EMERGENCY PHONENUMBER IS ONLY TO BE USED IN CASE OF EMERGENCIES:<br>
THE SURFNET HELPDESK OPERATING THE EMERGENCY NUMBER HAS A *FIXED* PROCEDURE FOR DEALING
WITH YOUR ALERT AND WILL IN REGULAR CASES RELAY IT TO CERT-NL IN AN APPROPRIATE MANNER.
CERT-NL WILL THEN CONTACT YOU.</p>
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