Subject AIX uucp vulnerability Date 19-mar-92
21b82546c80f381882e2f30651e2cada584f05a7c36c213dde99d109aa86eac7
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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 to CERT-NL information contained in this advisory are therefore outdated.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-92-06
Distribution : SURFnet Constituency Page : 1
Classification: External Version: final
Subject : AIX uucp vulnerability Date : 19-mar-92
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CERT-NL (SURFnet Computer Emergency Response Team) has received
information concerning a security problem in AIX uucp.
CERT-NL wishes to thank CERT/CC for bringing this to our attention.
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CA-92:06 CERT Advisory
March 19, 1992
AIX uucp Vulnerability
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The Computer Emergency Response Team/Coordination Center (CERT/CC) has
received information concerning a vulnerability with the UUCP software
in versions of AIX up to 2007. The vulnerability does not exist in AIX 3.2.
IBM is aware of this problem, and a fix is available as apar number
"ix18516". This patch is available for all AIX releases from GOLD to
2006.
The fix is in the 2007 update and 3.2 release of AIX. 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.
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I. Description
Previous versions, except AIX 3.2, of the UUCP software contained
incorrectly configured versions of various files.
II. Impact
Local users can execute unauthorized commands and gain unauthorized
root access.
III. Solution
- If allowing users access to the uucp isn't necessary, disable it.
% chmod 0100 /usr/bin/uucp
- Obtain the fix from IBM Support.
- Install the fix following the instructions in the README file.
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The CERT/CC would like to thank Steve Knodle, Clarkson University, for
bringing this security vulnerability to our attention.
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If you believe that your system has been compromised, contact CERT/CC or
your representative in FIRST (Forum of Incident Response and Security Teams).
Internet E-mail: cert@cert.sei.cmu.edu
Telephone: 412-268-7090 (24-hour hotline)
CERT/CC personnel answer 7:30 a.m.-6:00 p.m. EST(GMT-5)/EDT(GMT-4),
on call for emergencies during other hours.
Computer Emergency Response Team/Coordination Center (CERT/CC)
Software Engineering Institute
Carnegie Mellon University
Pittsburgh, PA 15213-3890
Past advisories, information about FIRST representatives, and other
information related to computer security are available for anonymous ftp
from cert.sei.cmu.edu (192.88.209.5).
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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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