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Home : Advisories : AIX /bin/passwd Vulnerability
| Title: |
AIX /bin/passwd Vulnerability |
| Released by: |
CERT |
| Date: |
31st March 1992 |
| Printable version: |
Click here |
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CA-92:07
Last Revised: September 19, 1997
Attached copyright statement
CERT Advisory
March 31, 1992
AIX /bin/passwd Vulnerability
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The Computer Emergency Response Team/Coordination Center (CERT/CC) has
received information concerning a vulnerability with the passwd command
in AIX 3.2 and the 2007 update of AIX 3.1.
IBM is aware of this problem, and a fix is available as apar number
"ix23505". Patches are available for AIX 3.2 and the 2007 update of
AIX 3.1.
This fix may be ordered from Level 2 support or by anonymous ftp from
software.watson.ibm.com (129.34.139.5) on the Internet.
1. To order from IBM call 1-800-237-5511 and ask
that the fix be shipped. Patches may be obtained
outside the U.S. by contacting your local IBM
representative.
2. If you are on the Internet, use anonymous ftp to obtain
the fix from software.watson.ibm.com.
Patch Filename Checksum
AIX 3.2 pub/aix3/pas.32.tar.Z 54431 2262
AIX 3.1 2007 pub/aix3/pas.31.tar.Z 06703 99
Patches should be retrieved using binary mode.
IBM is currently incorporating the fix into the 3.2 version and 3.1
updates of AIX. Future shipments of these products should not be
vulnerable to this problem. If you have any questions about products
you receive, please contact your IBM representative.
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I. Description
The passwd command contains a security vulnerability.
II. Impact
Local users can gain unauthorized root access.
III. Solution
A. As root, disable /bin/passwd until you obtain and install
the patch.
# chmod 0500 /bin/passwd
B. Obtain the fix from IBM and install according to the
directions provided with the patch.
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The CERT/CC would like to thank Paul Selick of the University of Toronto
for bringing this security vulnerability to our attention. We would also
like to thank IBM for their quick response to this problem, and for making
the patches available via anonymous ftp.
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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.org
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.org (192.88.209.5).
- ------------------------------------------------------------------------------
Copyright 1992 Carnegie Mellon University. Conditions for use, disclaimers,
and sponsorship information can be found in
http://www.cert.org/legal_stuff.html and http://ftp.cert.org/pub/legal_stuff .
If you do not have FTP or web access, send mail to cert@cert.org with
"copyright" in the subject line.
CERT is registered in the U.S. Patent and Trademark Office.
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Revision History:
September 19,1997 Attached Copyright Statement
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