CERT Advisory 045

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CERT Advisory

 · 4 years ago

  

 
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CA-92:09                        CERT Advisory 
                               April 27, 1992 
                       AIX Anonymous FTP Vulnerability 

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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. 

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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. 

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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. 
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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). 

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