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- ===========================================================================
- CA-92:09 CERT Advisory
- April 27, 1992
- AIX Anonymous FTP Vulnerability
-
- ---------------------------------------------------------------------------
-
- The Computer Emergency Response Team/Coordination Center (CERT/CC) has
- received information concerning a vulnerability in the anonymous FTP
- configuration in all versions of AIX.
-
- IBM is aware of this problem and a fix is available as apar number
- "ix23944". This patch is available for all AIX releases from "GOLD".
-
- 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. The fix will appear in the upcoming 2009
- update and the next release of AIX.
-
- ---------------------------------------------------------------------------
-
- I. Description
-
- Previous versions of the anonymous FTP installation script,
- /usr/lpp/tcpip/samples/anon.ftp, incorrectly configured various files
- and directories.
-
-
- II. Impact
-
- Remote users can execute unauthorized commands and gain access to the
- system if anonymous FTP has been installed.
-
-
- III. Solution
-
- A. Obtain the fix from IBM Support. The fix contains three
- files: a "readme" file (README.a23944), the fix installation
- script (install.a23944), and an archive containing the updated
- files (PATCH.a23944.Z).
-
- B. Install the fix following the instructions in the README file.
-
- ---------------------------------------------------------------------------
- The CERT/CC would like to thank Charles McGuire of the Computer Science
- Department, the University of Montana for bringing this security
- vulnerability to our attention and IBM for their response to the problem.
- ---------------------------------------------------------------------------
-
- 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).
-