CERT® Advisory CA-1992-07 AIX /bin/passwd VulnerabilityOriginal issue date: March 31, 1992
Last revised: September 19, 1997
Attached copyright statement
A complete revision history is at the end of this file.
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 (188.8.131.52) on the Internet.
I. DescriptionThe passwd command contains a security vulnerability.
II. ImpactLocal users can gain unauthorized root access.
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.
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.
This document is available from: http://www.cert.org/advisories/CA-1992-07.html
CERT/CC Contact Information
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Copyright 1992 Carnegie Mellon University.
September 19,1997 Attached copyright statement