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- DRAFT
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- ________________________________________________________________________
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- THE COMPUTER INCIDENT ADVISORY CAPABILITY
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- CIAC
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- INFORMATION BULLETIN
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- ________________________________________________________________________
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- DECNET Hacker Attack Alert
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- January 18, 1990, 1430 PST Number A-12
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- CIAC has recently been advised of a series of hacker attacks on DECnet
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- systems. Hackers are using a variety of techniques to break into systems,
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- including entering through system accounts (e.g., SYSTEM) or through
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- user accounts in which the account name and password are identical. Other
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- hackers are using more sophisticated techniques.
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- Once the hackers have broken into a system, they may cause a variety of
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- problems. They may become privileged users, and then leave executable
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- images. CIAC has also been advised that VMSMAIL_PROFILE.DATA may be
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- altered to cause mail sent to the system manager and other accounts to
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- be intercepted. (Since mail delivery may be compromised, it may not be
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- advisable for VMS system managers to alert users of these threats using
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- electronic mail.) In addition, they may modify RIGHTSLIST.DAT, causing
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- problems with Access Control Lists.
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- CIAC recommends that DECnet administrators increase monitoring activity.
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- It is important to check for default account passwords and user accounts
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- in which the user name is the same as the password. However, the more
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- sophisticated penetration methods may be difficult to detect. At a
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- minimum, you may want to ensure that all your privileged accounts are
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- authorized.
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- If you have questions, please contact CIAC:
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- Eugene Schultz (415) 422-8193 or (FTS) 532-8193
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- FAX: (415) 423-0913 or (FTS) 543-0913
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- CIAC's 24-hour emergency hot-line number is (415) 971-9384
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- or send e-mail to: ciac@tiger.llnl.gov
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- Neither the United States Government nor the University of California
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- nor any of their employees, makes any warranty, expressed or implied, or
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- assumes any legal liability or responsibility for the accuracy,
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- completeness, or usefulness of any information, product, or process
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- disclosed, or represents that its use would not infringe privately
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- owned rights. Reference herein to any specific commercial products,
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- process, or service by trade name, trademark manufacturer, or
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- otherwise, does not necessarily constitute or imply its endorsement,
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- recommendation, or favoring by the United States Government or the
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- University of California. The views and opinions of authors expressed
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- herein do not necessarily state or reflect those of the United States
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- Government nor the University of California, and shall not be used for
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- advertising or product endorsement purposes.
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