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- **************************************************************************
- Security Bulletin 9211 DISA Defense Communications System
- April 1, 1992 Published by: DDN Security Coordination Center
- (SCC@NIC.DDN.MIL) 1-(800) 365-3642
-
- DEFENSE DATA NETWORK
- SECURITY BULLETIN
-
- The DDN SECURITY BULLETIN is distributed by the DDN SCC (Security
- Coordination Center) under DISA contract as a means of communicating
- information on network and host security exposures, fixes, and concerns
- to security and management personnel at DDN facilities. Back issues may
- be obtained via FTP (or Kermit) from NIC.DDN.MIL [192.112.36.5]
- using login="anonymous" and password="guest". The bulletin pathname is
- scc/ddn-security-yynn (where "yy" is the year the bulletin is issued
- and "nn" is a bulletin number, e.g. scc/ddn-security-9211).
- **************************************************************************
-
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
- ! !
- ! The following important advisory was issued by the Computer !
- ! Emergency Response Team (CERT) and is being relayed unedited !
- ! via the Defense Information Systems Agency's Security !
- ! Coordination Center distribution system as a means of providing !
- ! DDN subscribers with useful security information. !
- ! !
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
-
- ===========================================================================
- CA-92:07 CERT Advisory
- March 31, 1992
- AIX /bin/passwd Vulnerability
-
- ---------------------------------------------------------------------------
-
- 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. Outside the U.S., you
- may obtain patches 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.
- ---------------------------------------------------------------------------
-
- 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.
-
- ---------------------------------------------------------------------------
- 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.
- ---------------------------------------------------------------------------
-
- 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).
-
- ****************************************************************************
- * *
- * The point of contact for MILNET security-related incidents is the *
- * Security Coordination Center (SCC). *
- * *
- * E-mail address: SCC@NIC.DDN.MIL *
- * *
- * Telephone: 1-(800)-365-3642 *
- * *
- * NIC Help Desk personnel are available from 7:00 a.m.-7:00 p.m. EST, *
- * Monday through Friday except on federal holidays. *
- * *
- ****************************************************************************
-
-