home *** CD-ROM | disk | FTP | other *** search
- ***********************************************************************
- DDN Security Bulletin 90-02 DCA DDN Defense Communications System
- 30 Jan 90 Published by: DDN Security Coordination Center
- (SCC@NIC.DDN.MIL) (800) 235-3155
-
- DEFENSE DATA NETWORK
- SECURITY BULLETIN
-
- The DDN SECURITY BULLETIN is distributed by the DDN SCC (Security
- Coordination Center) under DCA contract as a means of communicating
- information on network and host security exposures, fixes, & concerns
- to security & management personnel at DDN facilities. Back issues may
- be obtained via FTP (or Kermit) from NIC.DDN.MIL [26.0.0.73 or
- 10.0.0.51] using login="anonymous" and password="guest". The bulletin
- pathname is SCC:DDN-SECURITY-yy-nn (where "yy" is the year the bulletin
- is issued and "nn" is a bulletin number, e.g. SCC:DDN-SECURITY-90-01).
- **********************************************************************
-
- SUN SENDMAIL VULNERABILITY
-
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
- ! !
- ! The following important advisory was issued by the Computer !
- ! Emergency Response Team (CERT) and is being relayed unedited !
- ! via the Defense Communications Agency's Security Coordination !
- ! Center distribution system as a means of providing DDN !
- ! subscribers with useful security information. !
- ! !
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
-
- CERT Advisory
- 29 January 1990
- Sun Sendmail Vulnerability
-
-
- The Computer Emergency Response Team Coordination Center (CERT/CC) has
- learned of, and has verified, break-ins on several Internet systems
- in which the intruders have exploited a vulnerability in the Sun
- sendmail program. This vulnerability exists in all versions of
- SunOS up to and including the current version, 4.0.3 on Sun 3, Sun 4,
- and Sun 386i systems (note that 4.0.2 is the most current version of
- SunOS on the 386i machines). That is, all current Sun systems.
-
- The vulnerability has previously been reported to Sun and a solution
- to this problem (Sun bug # 1028173) is available via a new version of
- sendmail supplied by Sun. The new sendmail is available directly from
- the Sun Answer Center (1-800-USA-4SUN). Sun 3 and Sun 4 sendmail
- binaries are also available via anonymous FTP from uunet.uu.net in the
- /sun-fixes directory.
-
- This incident underscores the need for system administrators to
- maintain an awareness of the steps their vendors are taking to
- improve the security aspects of their products, and to seriously
- consider upgrading system configurations when solutions to security
- problems are made available.
-
- Administrators of Sun systems are urged to contact Sun for the new
- version of the sendmail program. Administrators of machines other
- than Suns are urged to contact their vendors to verify that they are
- running the latest version of sendmail, since there may have been
- security related fixes to it in the past year.
-
- If you need further information on this problem, contact your Sun
- representative or CERT/CC. CERT/CC can be contacted by telephone at
- (412) 268-7090 (24 hours) or email to cert@cert.sei.cmu.edu (monitored
- daily).
-
- Our thanks to Matt Bishop and Wayne Cripps for their efforts in
- analyzing and investigating this problem and its solution.
-
-
- Kenneth R. van Wyk
- Technical Coordinator, Computer Emergency Response Team
- Software Engineering Institute
- Carnegie Mellon University
- cert@CERT.SEI.CMU.EDU
- (412) 268-7090 (24 hour hotline)
-
-