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- ***********************************************************************
- DDN Security Bulletin 9116 DCA DDN Defense Communications System
- 16 Sep 91 Published by: DDN Security Coordination Center
- Supersedes DDN Sec. Bull. 9110 (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 [192.67.67.20]
- using login="anonymous" and password="guest". The bulletin pathname is
- SCC:DDN-SECURITY-yynn (where "yy" is the year the bulletin is issued
- and "nn" is a bulletin number, e.g. SCC:DDN-SECURITY-9001).
- **********************************************************************
-
- New Patch for SunOS /usr/lib/lpd
-
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
- ! !
- ! 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. !
- ! !
- + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
-
-
-
- CA-91:10a CERT Advisory
- September 12, 1991
- REVISION NOTICE: New Patch for SunOS /usr/lib/lpd
-
- ---------------------------------------------------------------------------
-
- *** THIS IS A REVISED CERT ADVISORY ***
- *** CONTAINS NEW INFORMATION ***
-
- There were a number of problems with various early versions of Sun
- Microsystems, Inc. (Sun) /usr/lib/lpd patch ( Patch ID 100305-xx ).
- While security problems were fixed in the patches, a remote print
- spooling problem was introduced. Sun believes all the problems have
- been fixed and they are now releasing the enclosed information
- concerning a new patch version. They have given the CERT/CC permission
- to distribute this information.
-
- The Computer Emergency Response Team/Coordination Center (CERT/CC)
- recommends that all affected sites follow the information provided
- by Sun Microsystems in this bulletin.
-
- ---------------------------------------------------------------------------
- START OF SUN-SUPPLIED INFORMATION
- ===========================================================================
-
-
- SUN MICROSYSTEMS SECURITY BULLETIN:
-
- This information is only to be used for the purpose of alerting
- customers to problems. Any other use or re-broadcast of this
- information without the express written consent of Sun Microsystems
- shall be prohibited.
-
-
- Sun expressly disclaims all liability for any misuse of this information
- by any third party.
- ---------------------------------------------------------------------------
-
-
- This is more an update on the lpd fix than any new information.
-
- First the update.
-
- After a lengthy beta test cycle, there is now available a new version
- of the lpd security fix. The patch-ID# is 100305-06.
-
- This patch is available via anonymous ftp from the ftp.uu.net system in the
- sun-dist directory as 100305-06.tar.Z, or through your local Sun Answer
- Center. The checksum information for the file available from ftp.uu.net is:
-
- 24474 440 100305-06.tar.Z
-
- --------------------------------------------------------------------------
-
- Some history.
-
- An lpd bug was discovered where lpd could be used to remove system files
- (/etc/passwd or /.rhosts as examples). This bug was fixed with 100305-01.
-
- A second bug was also shown that could still be used to remove system files.
- This fix was rolled into 100305-02.
-
- An lpc problem that touched one of the same modules as in the lpd fix was fixed
- and the subsequent change rolled into the lpd patch 100305-03.
-
- Two additional problems were sent to Sun: one having to do with RPC calls to
- lpd and the second having to do with postscript calls to lpd, thus 100305-04.
-
- It was in creating the -04 version that we unknowingly introduced a remote
- spool problem on the SunOS 4.1.1 version of the patch. The problem was that
- if the remote queue had jobs in it, the local job sent was often truncated
- to zero length.
-
- The -05 version was an attempt to back out the last few changes to remove the
- remote print problem. Unfortunately, it did not. It was at this time that
- we decided to do a lengthy evaluation and test cycle to ensure that the newest
- version fixed all the reported problems as well as fixed the remote
- spool bug we had introduced.
-
- The 100305-06 patch is the result of that lengthy test cycle.
-
- Thank you all for your support through all this.
-
- Brad Powell
- Software Security Coordinator
- Sun Microsystems.
-
- ===========================================================================
- END OF SUN-SUPPLIED INFORMATION
- ---------------------------------------------------------------------------
-
- If you believe that your system has been compromised, contact CERT/CC via
- telephone or e-mail.
-
- Computer Emergency Response Team/Coordination Center (CERT/CC)
- Software Engineering Institute
- Carnegie Mellon University
- Pittsburgh, PA 15213-3890
-
- Internet E-mail: cert@cert.sei.cmu.edu
- Telephone: 412-268-7090 24-hour hotline:
- CERT/CC personnel answer 7:30a.m.-6:00p.m. EST,
- on call for emergencies during other hours.
-
- Past advisories and other computer security related information are available
- for anonymous ftp from the cert.sei.cmu.edu (192.88.209.5) system.
-
-
-