Subject AIX Anon. FTP Vulnerability Date 27-apr-92
c30886f8b90e2774664c9a5b0007132d1628497a165db6aaabb19882227e43a5
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>> CERT-NL, 01-Mar-2000 <<
>> All CERT-NL information has been moved to http://cert.surfnet.nl. Links <<
>> to CERT-NL information contained in this advisory are therefore outdated. <<
>> <<
>> CERT-NL also has stopped the CERT-CC-Mirror service. Due to this the <<
>> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the <<
>> complete CERT-CC advisory texts: http://www.cert.org <<
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Security Advisory CERT-NL
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Author/Source : CERT-NL Index : S-92-09
Distribution : SURFnet Constituency Page : 1
Classification: External Version: final
Subject : AIX Anon. FTP Vulnerability Date : 27-apr-92
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CERT-NL (SURFnet Computer Emergency Response Team) has received
information concerning a security problem in AIX Anon. FTP.
CERT-NL wishes to thank CERT/CC for bringing this to our attention.
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CA-92:09 CERT Advisory
April 27, 1992
AIX Anonymous FTP Vulnerability
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The Computer Emergency Response Team/Coordination Center (CERT/CC) has
received information concerning a vulnerability in the anonymous FTP
configuration in all versions of AIX.
IBM is aware of this problem and a fix is available as apar number
"ix23944". This patch is available for all AIX releases from "GOLD".
IBM customers may call IBM Support (800-237-5511) and ask that the fix
be shipped to them. Patches may be obtained outside the U.S. by contacting
your local IBM representative. The fix will appear in the upcoming 2009
update and the next release of AIX.
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I. Description
Previous versions of the anonymous FTP installation script,
/usr/lpp/tcpip/samples/anon.ftp, incorrectly configured various files
and directories.
II. Impact
Remote users can execute unauthorized commands and gain access to the
system if anonymous FTP has been installed.
III. Solution
A. Obtain the fix from IBM Support. The fix contains three
files: a "readme" file (README.a23944), the fix installation
script (install.a23944), and an archive containing the updated
files (PATCH.a23944.Z).
B. Install the fix following the instructions in the README file.
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The CERT/CC would like to thank Charles McGuire of the Computer Science
Department, the University of Montana for bringing this security
vulnerability to our attention and IBM for their response to the problem.
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CERT-NL is the Computer Emergency Response Team for SURFnet customers. SURFnet
is the Dutch network for educational, research and related institutes. CERT-NL
is a member of the Forum of Incident Response and Security Teams (FIRST).
All CERT-NL material is available under:
http://cert.surfnet.nl/
In case of computer or network security problems please contact your local
CERT/security-team or CERT-NL (if your institute is NOT a SURFnet customer
please address the appropriate (local) CERT/security-team).
CERT-NL is one/two hour(s) ahead of UTC (GMT) in winter/summer,
i.e. UTC+0100 in winter and UTC+0200 in summer (DST).
Email: cert-nl@surfnet.nl ATTENDED REGULARLY ALL DAYS
Phone: +31 302 305 305 BUSINESS HOURS ONLY
Fax: +31 302 305 329 BUSINESS HOURS ONLY
Snailmail: SURFnet bv
Attn. CERT-NL
P.O. Box 19035
NL - 3501 DA UTRECHT
The Netherlands
NOODGEVALLEN: 06 22 92 35 64 ALTIJD BEREIKBAAR
EMERGENCIES : +31 6 22 92 35 64 ATTENDED AT ALL TIMES
CERT-NL'S EMERGENCY PHONENUMBER IS ONLY TO BE USED IN CASE OF EMERGENCIES:
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.
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