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 (220.127.116.11) on the Internet.
- 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.
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 99Patches should be retrieved using binary mode.
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.
Copyright 1992 Carnegie Mellon University.
September 19,1997 Attached copyright statement