Operating System:

Published:

26 August 2001

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

               ESB-2001.364 -- IBM AIX Security Notification
                           Web site defacements
                              27 August 2001

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                chatmpvc
                        mkatmpvc
                        rmatmpvc
                        digest
                        dtaction
                        dtprintinfo
                        ftpd
                        nslookup
                        pdnsd 
                        rpc.ttdbserverd
                        piobe
                        piomkapqd
                        portmir
                        sdrd
                        setsenv
                        telnetd
Vendor:                 IBM
Operating System:       AIX

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IBM AIX Security Notification

Wed, 22 August 2001, 13:50:04 CDT


Over the last few days, the IBM AIX Security Team has become aware of
a hacker group that has been targeting systems running the AIX operating
system, breaking into these systems, and defacing web sites on those
systems.

The tools being used to accomplish the breakins appear to be those
principally written by a Polish hacking crew using the name "Last
Stages of Delirium". Similar tools that take advantage of the same
vulnerabilities are available from elsewhere, too.

We have researched as many as we have been aware of software tools that
are being used to see if any of the vulnerabilities have or have not been
closed under AIX.

So far, we have determined that of all the vulnerabilties these tools
exploit have been fixed by IBM, dating back to 1996. APARs for all of
the vulnerabilities have been available to customers.

Here is a listing of the exploits we know of being used to gain access
to AIX systems during the recent attacks and the AIX version numbers
and APAR numbers associated with the fix for that version:

1. chatmpvc, mkatmpvc, rmatmpvc        4.3, APAR #IY08128
                                       4.2, APAR #IY08288

2. digest                              4.3, APAR #IX74599
                                       4.2, APAR #IX76272
                                       4.1, APAR #IX74457

3. dtaction                            4.3, APAR #IY02944

4. dtprintinfo                         4.3, APAR #IY06367
                                       4.2, APAR #IY06547

5. ftpd                                4.3, APAR #IY04477
                                       4.2, APAR #IX85556
                                       4.1, APAR #IX85555

6. nslookup                            4.3, APAR #IY02120
                                       4.3, APAR #IX9909

7. pdnsd                               Associated product out of service;
                                       Customers avised to disable
                                       and/or uninstall.

8. rpc.ttdbserverd                     4.3, APAR #IX81442
                                       4.2, APAR #IX81441

9. piobe, piomkapqd                    4.3, APAR #IY12638

10. portmir                            4.3, APAR #IY07832

11. sdrd                               SP systems only;
                                       4.3, APAR #IX80724

12. setsenv                            4.3, APAR #IY08812

13. telnetd                            E-fix available;
                                       4.3, IY22029
                                       5.1, IY22021

Affected customers are urged to upgrade the level of their AIX operating
systems and/or apply the APARs listed above to protect their systems.

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