Original issue date: September 16, 1993<BR>
Last revised: September 19, 1997<BR>
Attached copyright statement
<P>A complete revision history is at the end of this file.
<P>The CERT Coordination Center has received information concerning a
security vulnerability in Novell's NetWare 4.x login program
(LOGIN.EXE). This vulnerability affects NetWare 4.0 and 4.01. It does
not affect NetWare 2.x, NetWare 3.x, or Netware for UNIX.
<P>Novell is making available a security enhancement to the login
program for NetWare 4.x. CERT strongly recommends that sites using of
Novell NetWare 4.X replace their current LOGIN.EXE program on all
affected systems with this security-enhanced version as soon as
possible.
<P><HR>
<P>
<H2>I. Description:</H2>
<P>A security vulnerability exists in LOGIN.EXE in Novell NetWare 4.X.
In some environments, a user's name and password may be temporarily
written to disk.
<P>
<H2>II. Impact:</H2>
<P>User accounts may be readily compromised.
<P>
<H2>III. Solution:</H2>
<P>NetWare 4.x sites should obtain and install on all affected systems
the security-enhanced LOGIN.EXE program. CERT strongly recommends that
sites replace their current LOGIN.EXE with the security-enhanced
version as soon as possible.
<P>This new file is available via anonymous FTP from first.org. The
files are located in:
<P><PRE>
Filename Size Checksum
-------- ------ -----------------------------
/pub/software/seclog.exe 166276 00193 163 (Standard UNIX Sum)
58886 325 (System V Sum)
</PRE>
<P>This file is also available at no charge through NetWare resellers,
on NetWire in library 14 of the NOVLIB forum, or by calling
+1-800-NETWARE. NetWare customers outside the U.S. may call Novell at
+1-303-339-7027 or +31-55-384279 or may fax a request for SECLOG.EXE
v4.02 to Novell at +1-303-330-7655 or +31-55-434455. Fax requests
should include company name, contact name, postal address, and phone
number.
<P>The distribution SECLOG.EXE is a self-extracting archive that
contains a patched file and a text file of installation instructions.
The patch file (LOGIN.EXE) and the text file (SECLOG.TXT) are created
by executing the distribution file SECLOG.EXE. After extracting the
files, the dir command should produce the following output:
<P><PRE>
SECLOG EXE 166276 xx-xx-xx xx:xxx
LOGIN EXE 354859 08-25-93 11:43a
SECLOG TXT 5299 09-02-93 11:16a
</PRE>
<P>Note that the date and time shown for SECLOG.EXE will reflect when
this file was created on your system.
<P>To install the patch, follow the directions contained in the text file
SECLOG.TXT.
<P>After installing the patch, sites should instruct all users to change
their passwords.
<P><HR>
The CERT Coordination Center would like to thank Karyn Pichnarczyk and
the contribution of CIAC to this advisory. We would also like to
acknowledge Richard Colby of Chem Nuclear Geotech, Inc., for reporting
this vulnerability to CIAC, and Novell for their efforts in the
resolution of this vulnerability.
<!--#include virtual="/include/footer_nocopyright.html" -->
<P>Copyright 1993 Carnegie Mellon University.</P>
<HR>
Revision History
<PRE>
September 19,1997 Attached Copyright Statement
</PRE>
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